Agreed - very helpful video. I had sent you an email twice requesting help but just figured it out myself watching the video multiple times. Thanks Robojax!
Awesome video, inspiring too For DIY project- I’m trying to build gate opener. Few questions, if you could answer please; 1-which motor is enough for 200kg sliding gate.(any link or product specs) 2-forward/reverse bi-direction rotation(how to achieve) 3-anyway to have a motor speed control possible? I’m willing to do this for months but no guidance is stopping me.
1- if you don't need speed control, use this module th-cam.com/video/PjfPxxBTYiE/w-d-xo.html 2-for up to 15A use this th-cam.com/video/tCJ2Q-CT6Q8/w-d-xo.html without direction control and it would be hard to find such thing all in one
I think you mentioned hooking up the wrong VCC pin when using external power. When you remove the jumper, you want the external 5V to be on the LEFT VCC pin
Very good video can you tell us how we can hook loads that exceed 30 volts DC so if I have two batteries that I want to toggle between and they're 36 volts wouldn't that 36 volts passing through there destroy the circuit how do we toggle between those two DC power loads and still get the electricity needed to run the application
@@robojax very good. How will you connect different relays in such a way that if I turn on one power the other one goes off? or vice versa. LET ME KNOW IF YOU CAN DO THAT, VERY BE VERY THANKFUL
Can we turn on both the ac load and dc load at the same time using the two channel relay? or is that not safe and thus being the reason why you showed them being on in an alternating manner in the video?
it would be very simple to use 2 resistors to make voltage divider. See this diagram. snipboard.io/gJXm0c.jpg this converts 5V for 3.3V and can be used for 24V just change the 1.8k resistor to 22k.
Been soldering wire for 40 years now and have never seen a solder joint fail due to heat. Poor adhesion maybe, but never heat. 60/40 solder melts at 365F and if your circuit is getting to that temperature, you have done something wrong. Stop spreading that BS lie.
Hi, thanks for the explanation. Important comment: When taking out the jumper to supply power from an independent source for relays, exterior pins shold be used (GND and JD-VCC). The VCC central pin is the same as the VCC in the other input as they are wired together through the pcb. I'm doing a little research since my board (NODEMCU ESP8266) works with 3.3V, and I want to try feeding 5V to the relays and 3 to the signal side. Would it be possible? Has anyone tried?
Great video! This helped a lot. Can you please explain what kind of dc power supply you connected to the motor? Is it okay to use Li-ion batteries for that purpose?
The power supply voltage depends on your motor. doe snot matter. if your motor is 50V use 50V or it is 12V use 12V. You are welcome. Please subscribe. I appreciate it and helps my channel grow. Thank you
What if I connect a motor driver (say drv8825) to a Raspberry pi board to control a nema17 stepper motor, and at the same time I connect a relay module to the same Pi board to control an AC bulb? Can I control both simultaneously?
It would be somewhat safer to connect the ac neutral to the relay, being it is connected to ground, and can not make a circuit with ground, you would have to rember the line or hot wire is still live, when the circuit is shut off, so light sockets would still have a live contact, it would make the board safer to touch!
Is the JD-VCC pin strictly for powering the switches? Can it also be used to connect a single DC power source to 8 devices, e.g. 24V peristaltic pumps?
relay can just turn ON/OFf a motor and con't control something in between which we want to control the speed. L298N allows speed control and relay can't.
Is the arduino and relay safe from back emf from dc motor? What if we connect 12v dc solenoid instead of dc motor? How to control it's back emf when it switches off?
Hi Ahmad, Educational movie, clearly explained, liked and subscribed. Regarding rating of the relay: I never understood why the rating is AC 250V/10A and for AC 125V is also 10A? If this can switch a power of 2.5 KW at 250 V why cannot switch 20 A at 125 VAC, because that would be same power? Thanks.
Hi, the piece of metal the current passing through the relay can handle 10A. At lower voltage works fine but higher voltage is prone to causing spark and for that reason you can't say at 250V it can handle 10A=2500W, we should then go back to 125V and use it for 2500W. 10A is the limit. Usually at lower voltages it works fine but can't increase it.
@@robojax Is normal to control a 120ac relay with a 5v board. My question is how can I do the reverse. I want to have a normal house pole switch that in some way control/send a 5v circuit (a 5v relay maybe if exists?)
hi robojax, why do some people use diode, transistor and resistor in similar circuits? is it related to reverse current? and if so, does separating the power supply for arduino and relay help (so only data connection between arduino and relay)?
sorry I missed your comment. The transistor and diode etc are to drive the relay. this module has all those components for you. I have separate video on how to drive a relay See it here th-cam.com/video/N-fFk51Eb8s/w-d-xo.html . To keep the power of Arduino and the board separate, it is a good practice to keep the microcontroller and the power section separate. This increases safety.
sir , i have a question , if the lamp is replaced with a single phase 220VAC 1400watt electric motor , can it be done?? please answare sir, that is my Homework from My school
Hi, congratulations on your professionalism. I would like to ask you how to make the 4 lelay work with an arduino radio frequency remote control. Thank you, subscribed and like !!
thank you. there so many protocols of RF remote controlling. modules sold for Arduino and people also use RC car/plane can also be used. it needs full detailed video.
Nice video sir, but how to connect Relay 5V 2 channel to a Arduino + Ir module. To connect a bulb that will light up if the ir sensor detects an object. Please sir help me
Hi sir, if my relay is 12V and I'm going to use an Arduino to send signal. Is it possible to trigger the relay? But using an 12V external power to JD-VCC. Thanks.
I have so many videos and push buttons switch please search them. For one relay, it can turn on/off only and you can’t change what direction of rotation. It seems you haven’t watched the video. Please watch fully yo learn.
I don't undestand what. you can reacieve any signal LOW or HIGH and do something with Arduino. So Arduino can send LOW or HIGH to the relay. But if you want to do it without Arduino, you can do it with a PNP transistor and 1k ohm reisistor. But here is the relay with LOW level trigger th-cam.com/video/N-xbxtGGoHw/w-d-xo.html
Hi Sir Robojax! Greetings from Philippines! i like how you tutor me using your videos! do you use the own 5v supply of arduino UNO? hows that possible when you have huge 2 loads(1 motor and 1 LBulb) i think 500mA is the max current draw on arduino Uno 5v pin?
Oh my bad i was overthinking the relays mA current draw is different from the rating of the relays contacts. but why use a external power source or separate the supply of the relays? from arduino 5v? in your video you use arduino UNO 5v whats the difference between supplying externally and via arduino UNO own 5v?
I just explained the option because you may keep Arduino separate from relay power for safety reason because it is possible for relay to draw more current, arduino can't supply that much and keep is safe.
Yes you can, use the code in this video to ready voltage th-cam.com/video/FaoKzi7tgME/w-d-xo.html I have mentioned how to measure any voltage. Then decide what to do when the voltage reaches to certain value.
@@robojax I am making solar , wind hybrid power system . It measures voltages generated by solar panel and motor and compares them . It has 2 LEDs . If the voltage generated by solar panel is greater than motor then LED1 glows by power produced by solar panel and if voltage generated by motor is high LED2 glows by power produced by motor . Please guide me about the connections of solar panel , motor and LEDs with 2 channel relay module
I don't have a lot of experience with relays, but I found out that my relay looks the same but works in reverse. When there is power from digitalWrite(7,HIGH) it actually turns it off and the "LOW" command turns it on. I don't know if this is normal, but I would appreciate any input.
Hi! I’m having trouble when hooking the wires to Normally Open. It doesn’t work. If I hook the wires to Normally Closed it works just fine. Any help would be much appreciated. Thanks!
If you connect it to normalcy open then you have define ON and OF the opposite, I have fully explained it how it works. Watch it tow or three times until you get it .
I'm trying to to use these relays (x6) but controlled from 74HC595 chips. But i can't get it to work. The 74HC595 chip only gives out 6 mA but shouldn't the power come from the 5V? Only the led lights up.
Hi, that's why we use relay driver so enough power drivers the relay. voltage is one thing, the current (ampere) id different. Power = V*I, where P is power in Watt, V is voltage and I is current in A (Ampere). So you need to use relay module. or build your own relay driver shown in this video th-cam.com/video/N-fFk51Eb8s/w-d-xo.html
Hello, I'm switching a motor ON and OFF once the counts reach the preset value.. but upon switching ON/OFF my arduino resets randomly but not always . Advice plaease. Thankyou in advance.
if it rests arduino, it means something is wrong and it creates short circuit and turning the Arduino. check wiring. I assume you have not changed the code.
oh. people don't watch and ask. I just watched the video. I wish you've asked a question that was not addressed in the video. I've clearly explained it in the code section.
Yes can but it depends in the type application. here is my video winch you can control the diction of stepper motor th-cam.com/video/Sl2mzXfTwCs/w-d-xo.html
I don't remember what is it. when i explained the code where it say digitalWrite(8, LOW); if this line which has LOW turns the relay ON, then the relay is Low level trigger if we have digitalWrite(8, HIGH) and it turns the relay ON, then it is HIGH level trigger. Just watch and pay attention. Good luck.
i have a question, i am using same relay as yours but i get a reverse result, when my arduino isnt sending high signal to the in1 or in2 relay gets active, when i send signal to in1 or in2 relay turn off. pls help
Hello, your relay must be different. Regardless I have explained it fully so you should understand it if you watched that you can change anywhere inside loop you see HIGH and LOW, switch them. meaning change HIGH to LOW and LOW to HIGH.
Yes you can do it with two push buttons. Instead of input from Arduino to the relay module, you connect push button to the input. Sorry there is time difference between Canada and your location. I was in bed when you replied. Also I read comments ONEC a day. so it will take usually 12 to 24 hours.
how can i control two ac loads and have start and stop. also i need so if one relay is on the other can't turn on. im tryng to control a ac motor that can spin both way and the relay will turn on the contactor that controls the ac motor
Hi. I'm newbie in arduino. Can you help me? Now i'm into project that one arduino can ran 2 relay with 2 ultrasonic sensor and 2 DC motor. And i'm stuck with coding. I only got one code that can ran 1 relay with 1 sensor. Can you help me with the coding? Thanks
your project has 3 items, relay, ultrasonic, motor. Here is the video which you will learn from th-cam.com/video/QQ7iDagQnQM/w-d-xo.html and here is my Arduino Course on Udemy robojax.com/L/?id=67
Bro can you help me make an app and code for switching on and off 2 AC connections using arduino nano and Wifi module? I was making a Wifi Enabled Smart Plug for my Science Investigatory Project. Tnx
@@robojax so i have watched the video. Three times. Have you clicked on the link to see where it re-directs you to? The code in your video, doesnt seem to match the code that the link goes to. Thats a statement.
this is just simple switch ON/OFF it should not fail. first try it without motor and see if relays respond. at one time both relay should not be ON. One is ON the other is OFF to make the motor run. else you have done incorrect wiring.
it is all about the code in Arduino. learn that and you will understand why I shown how to connect. I have shown all wiring. I just watched myself the video.
thank you but the link provided to download the code is not working does not even directly link to the files to download can i make a request to ask for the fresh link so i can download it again
@@robojax can i make a request for a project... code and setup of charging station with 2 relay channel , charging module and coin acceptor ...the rate of hrs per coin ?
that is very hard. Detecting coin and values is very tough topic. it needs very complex mechanism and processing power. I won't be able to do it alone.
@@robojax there is a tutorial about coin acceptor my problem i dont have background with any source code in adruino so it is difficult to me to start this project i have the diagram for coinacceptor and your tutorial for controlling relays but my problem is i dont know how to start to combine those two the clue is on my hand but i dont have an idea to sketch the code
There is TWO HUGE mistakes in this video!!! FIRST MISTAKE: The 5V provided by Arduino is not enough to switch the relay because the optocuplor and the relay is rated at 12 Volts ! SECOND MISTAKE: The 12V for the optocuplor and relay must be provided on the pin named JD Vcc, not on the Vcc because the Vcc from left is connected with Vcc from right and you will put 12V on Arduino 5V and Arduino board will blow. I saw this video and I distroy one Arduino nano board. PLEASE PAY ATTENTION TO THE RELAY BOARD!
5V of Arduino can supply minimum 1A which is coming from laptop or desktop. Each relay will use maximum of 100mA so in total this will consume 0.2A so no worries.
Robojax No not working with high voltage. the wrong words used is not your perspective. the wrong words can be result in people getting hurt or worse when working with high voltage. there is no liability in the wrong words you use just ignorance.
I've looked all over the internet and this is the closest I've found to a solution to my problem. My project has a 12V power supply using three 18650 Li-ion batteries on a charger board ( www.parts-express.com/dayton-audio-lbb-3-3-x-18650-lithium-battery-charger-board---module-12v-with-charge-protect--325-200 ). I need to upgrade this to 24V with another identical board using a 2-channel optocoupler relay I have from HiLetgo. I have all the components but have no idea how to wire them together safely. Can you help?
@@robojax Thanks for replying. It's a bluetooth speaker kit with an amp that can handle 24V. But the kit only comes with the 12V board even though they do recommend upgrading o 24V. So I have to connect the two boards in series, with an optocoupler relay similar to the one in this video, in between controlling them somehow.
Midroll adds = Dislike Video You don't have to run midrolls, that is a fact, I let all adds run but will never let a midroll run if I can catch it, they are usually twice as loud , can run for an hour or more, literally. Not all of us are able to sit in front of our laptops, to catch disruptive midroll adds. Midroll adds encourage viewers to turn to add free subscriptions, which drives revenue away from content providers.
What is midroll ? The ads? I worked over 8 hours to make this video by wiring code and making video and you can’t even wait 10 seconds? The pay for TH-cam premium and never see ads here m.th-cam.com/users/premium
paid service is the best option. either pay and watch using premium or hire someone. you can't expect to get it absolutely for free. you give up something and get something. unless you are unjust person who wants something without paying for it.
best video found so far
Thank you.
One of the few videos that explain the basic operation principals clearly!!👍
Glad you think so!
Pro tip: you can watch movies on flixzone. Been using them for watching a lot of movies recently.
@Uriel Drake definitely, have been using flixzone} for since november myself :)
@Uriel Drake Definitely, been using flixzone} for since december myself =)
@Uriel Drake yea, have been using flixzone} for years myself :)
Agreed - very helpful video. I had sent you an email twice requesting help but just figured it out myself watching the video multiple times. Thanks Robojax!
You are welcome.
Thank you for the video sir. It really helps me for my final project🙌
You are welcome. Good to hear that. Ahmad from Canada
Salute you sir. For explaining asia and European countries relay power capacity. Hats off sir.
#From India #
Assalamu alaikum. Ramadan Karim. Thank you.
Awesome video, inspiring too
For DIY project- I’m trying to build gate opener. Few questions, if you could answer please;
1-which motor is enough for 200kg sliding gate.(any link or product specs)
2-forward/reverse bi-direction rotation(how to achieve)
3-anyway to have a motor speed control possible?
I’m willing to do this for months but no guidance is stopping me.
1- if you don't need speed control, use this module th-cam.com/video/PjfPxxBTYiE/w-d-xo.html
2-for up to 15A use this th-cam.com/video/tCJ2Q-CT6Q8/w-d-xo.html without direction control
and it would be hard to find such thing all in one
i want to do the same project
for 12v relay module you also need to power it using 12v right? for car accessories
Ah thank you so much. This was a great help. Just wiring up a relay to control my DC Battery charger when my solar batteries voltages drop too far.
I think you mentioned hooking up the wrong VCC pin when using external power. When you remove the jumper, you want the external 5V to be on the LEFT VCC pin
look at diagram I've shown.
@@robojax look at 3:58 where you point out wrong VCC terminal. What diagram?
Very good video can you tell us how we can hook loads that exceed 30 volts DC so if I have two batteries that I want to toggle between and they're 36 volts wouldn't that 36 volts passing through there destroy the circuit how do we toggle between those two DC power loads and still get the electricity needed to run the application
I’ve been looking for a good tutorial on this, thank you!
Glad it was helpful!
Hello guys welcome to my minecraft lesson lets mine for diamonds and hopefully some iron and ore
Nice! I was looking for something like this but don't have electronics know-how. This calrified a lot of questions for me. Thanks!
Glad I could help!
@@robojax very good. How will you connect different relays in such a way that if I turn on one power the other one goes off? or vice versa. LET ME KNOW IF YOU CAN DO THAT, VERY BE VERY THANKFUL
Great video on 2 relay module, thanks!
At 4:09 can I attach a power source that's higher than 5v to the external Power source if I don't want to use the power from Arduino?
You need to watch this lesson on Arduino board th-cam.com/video/wHd2CWlEL1E/w-d-xo.html
Can you tell me, if I need to connect the 230v motor with this module without a contactor, so is it possible or not?
Sir, you explained very well... My question is about the bulb.... Is the bulb connected to external power supply even after connecting to arduino??
yes.
Sir, you explained very well... especially the maximum power a relay can consume in the Asia and European region.... thanks a lot
You are welcome. I am glad you found it useful.
@@robojax can you help me?
Can we turn on both the ac load and dc load at the same time using the two channel relay? or is that not safe and thus being the reason why you showed them being on in an alternating manner in the video?
Yes. This just relay. a switch.
@@robojax Thank you for replying and clarifying that we can turn on both the ac load and dc load at the same time using the two channel relay.
Hi, i would like to know if the 24v rated relay modules could be triggered by 24v as signal or the 5v is a must as signal. Thank you.
it would be very simple to use 2 resistors to make voltage divider. See this diagram. snipboard.io/gJXm0c.jpg this converts 5V for 3.3V and can be used for 24V just change the 1.8k resistor to 22k.
Caution: Please do not solder the ends of wires as it can melt over time and cause shorts and fire. Instead, crimp the ends down with a proper tool.
Been soldering wire for 40 years now and have never seen a solder joint fail due to heat. Poor adhesion maybe, but never heat. 60/40 solder melts at 365F and if your circuit is getting to that temperature, you have done something wrong. Stop spreading that BS lie.
No. Components are soldered and there is no danger. Soldering of wire end is reliable and proper!
Hi, thanks for the explanation.
Important comment: When taking out the jumper to supply power from an independent source for relays, exterior pins shold be used (GND and JD-VCC). The VCC central pin is the same as the VCC in the other input as they are wired together through the pcb.
I'm doing a little research since my board (NODEMCU ESP8266) works with 3.3V, and I want to try feeding 5V to the relays and 3 to the signal side. Would it be possible? Has anyone tried?
Great video! This helped a lot. Can you please explain what kind of dc power supply you connected to the motor? Is it okay to use Li-ion batteries for that purpose?
The power supply voltage depends on your motor. doe snot matter. if your motor is 50V use 50V or it is 12V use 12V. You are welcome. Please subscribe. I appreciate it and helps my channel grow. Thank you
@@robojax thanks a lot! Will subscribe
@@robojax Good circuit but is it possible to do this without the ardino?
What if I connect a motor driver (say drv8825) to a Raspberry pi board to control a nema17 stepper motor, and at the same time I connect a relay module to the same Pi board to control an AC bulb? Can I control both simultaneously?
It would be somewhat safer to connect the ac neutral to the relay, being it is connected to ground, and can not make a circuit with ground, you would have to rember the line or hot wire is still live, when the circuit is shut off, so light sockets would still have a live contact, it would make the board safer to touch!
Hi, always put switch on LIVE or HOT line. the relay is switch and connect LIVE. But remember it is NOT safe to touch even if the relay is OFF.
Sir, thank you for your explanation. It was very useful.
you are welcome.
Is the JD-VCC pin strictly for powering the switches? Can it also be used to connect a single DC power source to 8 devices, e.g. 24V peristaltic pumps?
Yes it is. the connector is to power relay ONLY. it has tiny pins. have I understood your question?
@@robojax Yes. Thank you!
i wonder an want to learn, why do we use l298n motor driver instead of using relays to run DC motors?
relay can just turn ON/OFf a motor and con't control something in between which we want to control the speed. L298N allows speed control and relay can't.
Is the arduino and relay safe from back emf from dc motor? What if we connect 12v dc solenoid instead of dc motor? How to control it's back emf when it switches off?
relay is just mechanical switch. to if you know what happens when you turn ON and OFF a switch to motor or solenoid, the same is true here.
Hi Ahmad,
Educational movie, clearly explained, liked and subscribed. Regarding rating of the relay: I never understood why the rating is AC 250V/10A and for AC 125V is also 10A? If this can switch a power of 2.5 KW at 250 V why cannot switch 20 A at 125 VAC, because that would be same power? Thanks.
Hi, the piece of metal the current passing through the relay can handle 10A. At lower voltage works fine but higher voltage is prone to causing spark and for that reason you can't say at 250V it can handle 10A=2500W, we should then go back to 125V and use it for 2500W. 10A is the limit. Usually at lower voltages it works fine but can't increase it.
@@robojax Thank you. So the limiting factor is the current not the actual power....
is there anything out there that can, using a 120ac input, relay a 5v circuit?
your question is not clear. if you meant to power the 5V relay with AC, then yes. AC120V to 5V dC adapter.
@@robojax Is normal to control a 120ac relay with a 5v board. My question is how can I do the reverse. I want to have a normal house pole switch that in some way control/send a 5v circuit (a 5v relay maybe if exists?)
Good video, with lot of important details. Nice!
thank you.
@@robojax Can I control load of max 15 amps under 12 volt DC??
hello sir, how do i connect a 3 wired ac fan exhaust to a relay? is it similar to this video?
Regular fan has only 2 wires. One wire should be ground. So ignore that and do not touch it. Now you have two wire to work with at your own risk.
hi robojax, why do some people use diode, transistor and resistor in similar circuits? is it related to reverse current? and if so, does separating the power supply for arduino and relay help (so only data connection between arduino and relay)?
sorry I missed your comment. The transistor and diode etc are to drive the relay. this module has all those components for you. I have separate video on how to drive a relay See it here th-cam.com/video/N-fFk51Eb8s/w-d-xo.html . To keep the power of Arduino and the board separate, it is a good practice to keep the microcontroller and the power section separate. This increases safety.
Can I use a 12 VDC for a load connected to the relay or I am limited to 28 or 30VDC? Will the current be 10 Amp too ?
Your load can by anything from 1V to 220V either AC or DC as long as you follow the power/current rating of the relay and safely proceed.
can you supply that relay switch with 24v 12AH supply? since the supply exceeds the 10Ah required current, will my supply burn the relay switch?
I have explained it in the video, but have a look at this: snag.gy/UDJMCg.jpg
@@robojax Can I control load of max 15 amps under 12 volt DC??
Both relays can be operated with same time with same input?
Yes they can. You haven't subscribed. I will reply to all Subscriber's 🔔 questions. So make sure to Subscribe.😊
sir , i have a question , if the lamp is replaced with a single phase 220VAC 1400watt electric motor , can it be done??
please answare sir, that is my Homework from My school
You have not watched the video fully. I made the video so you get all answers.
So can a two channel relay also power two outputs at the same? (Motor and Light both on)
if you mean to share the power to power up Arduino and relay and power up your load. yes you can if your load is needs the same level of voltage.
Hi, congratulations on your professionalism. I would like to ask you how to make the 4 lelay work with an arduino
radio frequency remote control. Thank you, subscribed and like !!
thank you. there so many protocols of RF remote controlling. modules sold for Arduino and people also use RC car/plane can also be used. it needs full detailed video.
Very good and informative video! Great work!
Thank you. Good to know that.
Nice video sir, but how to connect Relay 5V 2 channel to a Arduino + Ir module. To connect a bulb that will light up if the ir sensor detects an object. Please sir help me
please search my channel . I have so many videos on that.
Thanks very helpful!!
Hi sir, if my relay is 12V and I'm going to use an Arduino to send signal. Is it possible to trigger the relay? But using an 12V external power to JD-VCC. Thanks.
if you are can.
My Relais looks the same but without the DC load description printed on top of the Relais.
Still safe to use for DC?
I am not sure. You would have to find out.
0:01 5:53 how many times do i have to watch this over and over again from your videos.🤣
How do I use 1 button to turn
off ch1 & ch2 on like 0:30 with dc both sides?
Or can I use 1ch relay?
I have so many videos and push buttons switch please search them. For one relay, it can turn on/off only and you can’t change what direction of rotation. It seems you haven’t watched the video. Please watch fully yo learn.
Can it be converted to high trigger?
I don't undestand what. you can reacieve any signal LOW or HIGH and do something with Arduino. So Arduino can send LOW or HIGH to the relay. But if you want to do it without Arduino, you can do it with a PNP transistor and 1k ohm reisistor. But here is the relay with LOW level trigger th-cam.com/video/N-xbxtGGoHw/w-d-xo.html
Can you give me an schematic diagram sir for a time delay on using spdt realay, ne555ic, capacitor, and a digital clock display please
www.bing.com/search?q=Can+you+give+me+an+schematic+diagram+sir+for+a+time+delay+on+using+spdt+realay%2C+ne555ic%2C+capacitor%2C+and+a+digital+clock+display+please&form=QBLH&sp=-1&lq=1&pq=can+you+give+me+an+schematic+diagram+sir+for+a+time+delay+on+using+spdt+realay%2C+ne555ic%2C+capacitor%2C+and+a+digital+clock+display+please&sc=0-134&qs=n&sk=&cvid=E86E23CC813D46FB8B7A8EE6AA1009A4&ghsh=0&ghacc=0&ghpl=
Hi Sir Robojax! Greetings from Philippines! i like how you tutor me using your videos! do you use the own 5v supply of arduino UNO? hows that possible when you have huge 2 loads(1 motor and 1 LBulb) i think 500mA is the max current draw on arduino Uno 5v pin?
Oh my bad i was overthinking the relays mA current draw is different from the rating of the relays contacts. but why use a external power source or separate the supply of the relays? from arduino 5v? in your video you use arduino UNO 5v whats the difference between supplying externally and via arduino UNO own 5v?
I just explained the option because you may keep Arduino separate from relay power for safety reason because it is possible for relay to draw more current, arduino can't supply that much and keep is safe.
Thanks sir robojax! i love you man i owe you a lot! when i finish my project i want you to see it firts!
You are welcome. I ❤️ you too. Let's be good and help each other.
just a question... which device makes that clicking sound?
the relay.
Sir please can you help, when should i connect the jumper and when should i remove it and use an external adapter?
I watched the video making sure I have I have explained it in the video. Watch the video twice or three time until you get it.
@@robojax
Sorry for bothering you, if i want to control my room lights, should i connect external adapter?
Where can i find a device like this that can handle 20amps? Great video!
You can't. You can make your own powerfully relay module. I will make video on that.
Sir can you tell me that how to detect fault ac bulb which comnected with the relay??
Connect the bulb at home to something else making sure it works.
Good Man! Thank you for your help!
You are welcome.
What is maximun delay value? I want make motor run 2 hour earlier than light
There is no limit. You can delay it as long as you want.
@@robojax thanks for fast reply.. U r the best
Can I use to control solar panel and dynamo motor depending on whose voltage is high
Yes you can, use the code in this video to ready voltage th-cam.com/video/FaoKzi7tgME/w-d-xo.html I have mentioned how to measure any voltage. Then decide what to do when the voltage reaches to certain value.
@@robojax Thank you
@@robojax I am making solar , wind hybrid power system . It measures voltages generated by solar panel and motor and compares them . It has 2 LEDs . If the voltage generated by solar panel is greater than motor then LED1 glows by power produced by solar panel and if voltage generated by motor is high LED2 glows by power produced by motor . Please guide me about the connections of solar panel , motor and LEDs with 2 channel relay module
I don't have a lot of experience with relays, but I found out that my relay looks the same but works in reverse. When there is power from digitalWrite(7,HIGH) it actually turns it off and the "LOW" command turns it on. I don't know if this is normal, but I would appreciate any input.
yes. because your relay is "low trigger". Watch the video again. or see this video th-cam.com/video/58XWVDnB7Ss/w-d-xo.html
can u do the same using msp430g2553(lunch box) instead of arduino?
never heard of it. if you can connect and program it using Arduino Program (IDE) then yes.
Hi! I’m having trouble when hooking the wires to Normally Open. It doesn’t work. If I hook the wires to Normally Closed it works just fine. Any help would be much appreciated. Thanks!
If you connect it to normalcy open then you have define ON and OF the opposite, I have fully explained it how it works. Watch it tow or three times until you get it .
I'm trying to to use these relays (x6) but controlled from 74HC595 chips. But i can't get it to work. The 74HC595 chip only gives out 6 mA but shouldn't the power come from the 5V? Only the led lights up.
Hi, that's why we use relay driver so enough power drivers the relay. voltage is one thing, the current (ampere) id different. Power = V*I, where P is power in Watt, V is voltage and I is current in A (Ampere). So you need to use relay module. or build your own relay driver shown in this video th-cam.com/video/N-fFk51Eb8s/w-d-xo.html
Hello, I'm switching a motor ON and OFF once the counts reach the preset value.. but upon switching ON/OFF my arduino resets randomly but not always . Advice plaease. Thankyou in advance.
3 phase motor via a contactor. (DOL) stater..
if it rests arduino, it means something is wrong and it creates short circuit and turning the Arduino. check wiring. I assume you have not changed the code.
Can the speed of the motor be controlled?
NO. Relay can turn ON or OFF. Use this th-cam.com/video/PjfPxxBTYiE/w-d-xo.html
What relay can I use? I have 12V DC power source and I want 5V going to power an Arduino and 9V to power a device like a servo or actuator.
any relay either 5V or 12V. But you need relay module to connect it in simple way. Search my channel th-cam.com/users/robojaxTVsearch?query=relay
Are the pins active low?
oh. people don't watch and ask. I just watched the video. I wish you've asked a question that was not addressed in the video. I've clearly explained it in the code section.
Thanks a lot very useful. Please continue .
You are welcome. Will do in shaa Allah.
Thank you a lot!
You are welcome. The best thank you for me is to subscribe to my channel. Thank you.
Cant we use stepper motor(bidirectional) in place of dc motor...?
Yes can but it depends in the type application. here is my video winch you can control the diction of stepper motor th-cam.com/video/Sl2mzXfTwCs/w-d-xo.html
this is active low relay or not
I don't remember what is it. when i explained the code where it say
digitalWrite(8, LOW);
if this line which has LOW turns the relay ON, then the relay is Low level trigger if we have
digitalWrite(8, HIGH) and it turns the relay ON, then it is HIGH level trigger. Just watch and pay attention. Good luck.
i have a question, i am using same relay as yours but i get a reverse result, when my arduino isnt sending high signal to the in1 or in2 relay gets active, when i send signal to in1 or in2 relay turn off. pls help
Hello, your relay must be different. Regardless I have explained it fully so you should understand it if you watched that you can change anywhere inside loop you see HIGH and LOW, switch them. meaning change HIGH to LOW and LOW to HIGH.
Good presentation.
Thank you.
Sir I need a program combination of temprature , falme and 2 module relay for aurdino please help me sir
Here forum.arduino.cc/ post your question there.
Thank you sir
Sir I am not getting how to post a question
Cant we do it without aurdino
Please reply fast
Yes you can do it with two push buttons. Instead of input from Arduino to the relay module, you connect push button to the input. Sorry there is time difference between Canada and your location. I was in bed when you replied. Also I read comments ONEC a day. so it will take usually 12 to 24 hours.
@@robojax sir can u post a video on it very fast before tommarow and waterpumping motar should be there i.e automatic tap pls sir urgently nedded
I have a lot of videos on relay and push button. Just search my channel.
how can i control two ac loads and have start and stop. also i need so if one relay is on the other can't turn on. im tryng to control a ac motor that can spin both way and the relay will turn on the contactor that controls the ac motor
Hello, here is how to control the direction of rotation of DC motor using two relay th-cam.com/video/JMBgGO07YLM/w-d-xo.html
Robojax do you know how to add a start and a stop to this code?
Hi. I'm newbie in arduino. Can you help me? Now i'm into project that one arduino can ran 2 relay with 2 ultrasonic sensor and 2 DC motor. And i'm stuck with coding. I only got one code that can ran 1 relay with 1 sensor. Can you help me with the coding? Thanks
your project has 3 items, relay, ultrasonic, motor. Here is the video which you will learn from th-cam.com/video/QQ7iDagQnQM/w-d-xo.html and here is my Arduino Course on Udemy robojax.com/L/?id=67
nice video with very low volume
Yes, can't fix it now.
Great video..
How can I check if my module is for 12v or 5v?
It is written on the relay. The blue pieces
@@robojax oh i see know thanks! love u
Sir can we give 5v dc without arduino
Yes I believe I have explained in it in video. You can't always connect to USB.
Thank you for ur valualble reply. I am using this for automatic changeover switch 12v solar inverter.
Did u use a power supply?
for motor yes. for module no. just Arduino.
Can I control load of max 15 amps under 12 volt DC??
Yes you can. I have explained it in the video.
great vid. Cheers bro
Thank you. Cheers.
thanks man
THANK YOU SO MUCH SIR.
You are welcome.
Thnx.Its very helpful...
you are welcome.
Bro can you help me make an app and code for switching on and off 2 AC connections using arduino nano and Wifi module? I was making a Wifi Enabled Smart Plug for my Science Investigatory Project. Tnx
Better use Wemos/NodeMCU board. ESP8286/32 boards have nice examples in Arduino IDE.
your link to the code goes to code to control the direction of a dc motor
is this statement or question? it seems you have not watched the first minuet of the video.
@@robojax so i have watched the video. Three times.
Have you clicked on the link to see where it re-directs you to? The code in your video, doesnt seem to match the code that the link goes to.
Thats a statement.
Ive tried doing that only for the 12v Dc motor but it failed for some reason
this is just simple switch ON/OFF it should not fail. first try it without motor and see if relays respond. at one time both relay should not be ON. One is ON the other is OFF to make the motor run. else you have done incorrect wiring.
This very basic and it should work.
what? this relay is active low,,, why on the code are "HIGH ,RELAY TURN ON" ?
in this video actual circuit of relay has been explained th-cam.com/video/g6k8sPJyif8/w-d-xo.html
Brilliant.
Thank you.
Grt work
Thanks.
I am unable to understand the DC motor connection at least you should have shared the circuit diagram
it is all about the code in Arduino. learn that and you will understand why I shown how to connect. I have shown all wiring. I just watched myself the video.
thank you but the link provided to download the code is not working does not even directly link to the files to download can i make a request to ask for the fresh link so i can download it again
Thank you for letting me know. The link was incorrect and to other contents. I just fixed it. You can try it gain.
@@robojax can i make a request for a project... code and setup of charging station with 2 relay channel , charging module and coin acceptor ...the rate of hrs per coin ?
that is very hard. Detecting coin and values is very tough topic. it needs very complex mechanism and processing power. I won't be able to do it alone.
@@robojax there is a tutorial about coin acceptor my problem i dont have background with any source code in adruino so it is difficult to me to start this project i have the diagram for coinacceptor and your tutorial for controlling relays but my problem is i dont know how to start to combine those two the clue is on my hand but i dont have an idea to sketch the code
Very helpfull
Thank you.
CANT BOTH RELAYS BE OPERATED AT THE SAME TIME??
Yes they can. They are independent.
There is TWO HUGE mistakes in this video!!! FIRST MISTAKE: The 5V provided by Arduino is not enough to switch the relay because the optocuplor and the relay is rated at 12 Volts ! SECOND MISTAKE: The 12V for the optocuplor and relay must be provided on the pin named JD Vcc, not on the Vcc because the Vcc from left is connected with Vcc from right and you will put 12V on Arduino 5V and Arduino board will blow. I saw this video and I distroy one Arduino nano board. PLEASE PAY ATTENTION TO THE RELAY BOARD!
5V of Arduino can supply minimum 1A which is coming from laptop or desktop. Each relay will use maximum of 100mA so in total this will consume 0.2A so no worries.
Watch at 1.5 Speed and thank me later :) Good Info Though..
that would be too fast.
NO not normally CONNECTED? that doesn't make sense. its normally closed and normally opened.
You are right too. It is just matter of perspective. In contacts and wires, "closed" or "connected" results the same thing: flow of current.
Robojax No not working with high voltage. the wrong words used is not your perspective. the wrong words can be result in people getting hurt or worse when working with high voltage. there is no liability in the wrong words you use just ignorance.
@@robojax Can I control load of max 15 amps under 12 volt DC??
I've looked all over the internet and this is the closest I've found to a solution to my problem. My project has a 12V power supply using three 18650 Li-ion batteries on a charger board ( www.parts-express.com/dayton-audio-lbb-3-3-x-18650-lithium-battery-charger-board---module-12v-with-charge-protect--325-200 ). I need to upgrade this to 24V with another identical board using a 2-channel optocoupler relay I have from HiLetgo. I have all the components but have no idea how to wire them together safely. Can you help?
Hello, I can answer your question if I understand it and it is related to this video. I did not understand what you are trying to do.
@@robojax Thanks for replying. It's a bluetooth speaker kit with an amp that can handle 24V. But the kit only comes with the 12V board even though they do recommend upgrading o 24V. So I have to connect the two boards in series, with an optocoupler relay similar to the one in this video, in between controlling them somehow.
Midroll adds = Dislike Video
You don't have to run midrolls, that is a fact,
I let all adds run but will never let a midroll run
if I can catch it, they are usually twice
as loud , can run for an hour or more, literally.
Not all of us are able to sit in front of our laptops,
to catch disruptive midroll adds.
Midroll adds encourage viewers to turn to
add free subscriptions, which drives revenue
away from content providers.
What is midroll ? The ads?
I worked over 8 hours to make this video by wiring code and making video and you can’t even wait 10 seconds? The pay for TH-cam premium and never see ads here m.th-cam.com/users/premium
@@robojax Read the op again.
paid service is the best option. either pay and watch using premium or hire someone. you can't expect to get it absolutely for free. you give up something and get something. unless you are unjust person who wants something without paying for it.
@@robojax Read the op again.
Ye program work ni kar rha ha bhai. Log
English please . कृपया हिंदी लिखें। (मैंने अनुवाद करने के लिए Google का उपयोग किया)