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what grate kit... good for tones of application with a serial connection.. 20amp is a good choice i would make it a hybrid to turn it on and off like lower the clock speed....and turn off monitor...so when you need to do a serial check crank the clock speed an read.... question can you 90v dc reads or just 30v? can you do AC herts check like is it 50 or 60 herts.... grate reusable modular addon for any project..... with all the code what a bonus
Essential thoughts for the version 2.1. Make sure that the 4 mm banana sockest are 19.05 mm (0.75 inches) apart - this is the world wide standard for test gear. Include a 2x3 pin header location for ISP, this is very standard for Arduino-like boards. Consider tracking and pads for some sort of input protection. (And don't forget to get the display connector the right way round.)
Nice project. I tool a look into your code You consume many cycles inside the loop() method to identify the mode. if( mode == 1 ) then... if( mode == 2 ) then... if( mode == 3 ) etc.. This project has to move to C++ and make a class object with inheritance It can be super fast and probably can add more features later using the Uno.
Yes. This. It would be awesome to have all instruments readout on one monitor/tablet screen. Multimeter, resistance meter, oscilloscope, signal generator etc.
Nice work. Two more ideas you could add, multi-channel voltmeter and square signal generator. Sometimes it is useful to see voltage on different points on a one screen. I do it by using analog pins, but you can implement multiplexer. And max and minimum level buzzer, if current, voltage gets to high or low.
Instead of using the 328P and the bluetooth module you can use the ESP32 which have the bluetooth low energy option and have a so high processing capability, changing that ads1115 with other high sampling rate adc and you can have a low speed oscilloscope
I have a strong grasp of Arduino programming but lack the means to acquire Arduino boards, especially here in Ethiopia. Your support in obtaining these boards would make a profound difference in my journey. Thank you for considering my request.
simply just having an option for Bluetooth makes it better than most cheap meters you can buy!! but having an induction mode makes it a winner in my book,,, why it isn't on basic meters but capacitance is I would love to know.. class project and nicely done>>.
Nice one! but you didn’t utilised ads1115 to it’s full potential I’m working on a multimeter for a week now and hopefully it will be completed in next few days, I will not be using any other ic except ads1115 and also I’m aiming for a resolution better than a 50$ multimeter it can even be able to detect micro amps of current. Great video btw!
Well Done Mate, you got another sub!!! I can't wait for the Version 3 😊 I would be nice to add the Full Power Meter as you did in one of you old project, with Voltage, Current and Watt meter on the screen all together. 🤔 What do you think?
Very cool, looks sweet, except of the housing and that the switch is sticking out. Your single tutorials about the single measurements are very helpful, especially for beginners, like usual for you and this is a sweet project that I would love to see improved, in first place use a different display, what it needs is a big good readable display, no one needs colors on a mouse-tv for this jobs, use one of those 12864 COG displays, with an UC1701 driver or something compatible, there are libraries for them aswell, they cost around 4€ and are the best right before the pcd8544/Nokia 3310 lcd's by the price-performance ration, have big pixels and are very nice to read, I am short-sighted but don't need glases for this even if it's a good distance away. I want to build a propper multimeter, I mean a multi-meter, so a combination of a LCR-/Transistortester, multimeter and basic oscilloscope, maybe something else like a function generator, but stuck on the LCR-part, wish there would be an open-source code for the Transistortester from mikrocontroller.net, because I have no idea how to make the automatic-detection. I also want to use relays and pre-measurements, a protection through an op-amp or maybe something smarter, to make sure nothing will happen, if this, the connectors or cables burn it is bad enough, but I don't want to burn the whole circuit in case something happens, I never burned any multimeter or something like that, but this can happen any time to anyone, sure, it will make the measurement slow, but also gives the possibility to auto-range even the voltage. It will be not that small and I have a design in mind so it can be used as a desktop multimeter like as a mobile one. But something like that is a lot of work and I would completely understand if you wouldn't want to make it open-source, I'm not sure if I would, if I get it done one day, because only the osci code is a propper book by the size.
the acs712 has a slow sensitivity isn't reliable with that adc. that adc has an internal voltage reference and since the acs is ratiometric, small changes in the supply current will effect the output of the acs while not affecting the adc. With ratiometric sensors, it is best to use an adc that accepts an external voltage reference or uses the supply voltage as the reference voltage (like the mcp3221), and then to power the acs and adc with that voltage reference. an alternative, would be to use a non-ratiometric sensor like the acs70331 which I've found to be more accurate than the acs712, acs723, .etc. when measuring currents
Briefly overlooked the schematic and code. It seems to me that you didn't use any ISR. Has this a reason? The analog comparator and timer routines sure would be more convenient and efficient.
How do you read the negative voltages? U are using a full bridge rectifier so you always have a positive voltage on your analog input?! And the MB8S rectifier has a forward voltage (Uf) of 1V. So how do you read voltages below that value?!
Another good project from you! I was wondering can you consider to explain membrane switch and panel and order a custom made one from the factory ? this way we can improve our product look thanks
Can you serial all the data to the commport? I like the idea of all the test ports being separated. Its less prone to errors. And serialing all the data to the comport so it can be displayed by a gui program.
I've tried it, it was very difficult, had to match the code with the components used, and he was very accurate to set the accuracy, my device part of the amperage hovered before the load was passed, and the ADS analog pin was broken because of the voltage check forgot to turn the selector switch to volt, maybe I didn't put a diode on the resistor input?.. basically this is a good project for hobby! 🙂
So glad you make it. I'm happy you like it. If you want and have time, you can share your results on electronoobs.io so we can all see it. Yes is a hobby project. Of course a commercial one will always be better. Good day!
This was a very neat project. I was very excited to see that bluetooth connection and listen to your thoughts on sending the data to a smart phone. With the Bluetooth Serial Monitor app you wouldn't even need a custom app. I wonder how difficult it would be to have a data logging feature with an SD card or to have data logging on your PC. I do not know if a PC could data log from the bluetooth connection. I see that the maximum voltage is 30 V DC. Using an external voltage divider circuit to step down the voltage and then calculate the real voltage is one way to increase this range. I'm wondering if there is some kind of probe that can be built that can be plugged in to step down the voltage sort of what goes into oscilloscopes. Thank you for sharing.
Hello Sir,Great Project ,I was eagerly waiting for this.... Instead of mechanical Rotary Switch Can't we use some Electronic Switch such as MOSFETS.......??
@@ELECTRONOOBS Can you Pls give me the idea which FET should I use to build one...? Actually I am going to build the same type of multimeter with more compact size and Features...
Somehow this does not sound like a very good idea considering all commercial meters also use a mechanical switch. I would assume this is to avoid the other parts of the circuit affecting the measurements.
@@NiHaoMike64 You might be correct but I would assume Fluke wouldn't need to cheap out on materials on their high end models? An SSR would also require more power which should be used sparingly on a battery powered device.
Can you add impedance measuring to that design without much trouble? If you are going to do signal gen functions as somebody suggested then you have and AC signal from that.
Firstly i'm not a electrician if i wrote something wrong please correct me. By reading acs datasheet there are only 5,20,30 amp versions. I don't think that slide switch for current measurement will handle more than 0.5A and probably pcb tracks too. For programing pins why you use pads instead holes like in serial communication port it would by much easier to programm. And lastly adding up all component cost that you listed it is around 70 USD + PCB + soldering time, for that you can get "realy good" multimeters. You have a lot of realy interesting project on your channel but this one...
Thank you for the tips, I'll have those in mind. The project is not for commercial use. Making this will teach you a lot, adn that's whay my channel is about. Pretty much all my DIY projects will cost more than just buying one... That's what industry dose, lowers the price because they sell millions products. Good day!
Me gustaría hacerlo... pero la pantalla la veo muy pequeña... Conoces alguna pantalla más grande para hacer el tester? Cambiaría mucho el codigo? Buen vídeo!!
Thank you very much this channel helps much. But i need help for my final exam, Can i measure 15Volt DC using a Voltage sensor module (has 3 feet) and 20Ampere Using ACS712 Sensor module (also has 3 feet) and integrate both of them with ADS1115?
Indeed, those rotary switches, even to proper LORLIN ones, are only rated for a couple hundred milliAmps. They are in no way suitable for switching any reasonable current.
again a great video........can you make a esr meter with arduino to check components on board without have to desolder? most of the time its a faulty capasitor to repair something but you dont know witch and desolder everyone is a pain in the assssaaasssss........
This project is great and best project. Can you make this vibeo 2nd episode how to connecte this to blueooth and its send data to home made google glass.i think its very important to us
bluetooth communication using this board is possible or not please give answer if possible , how to connect its with your diy smart watch please answer
Louis Scully has designed and built a couple of different function generators that you may find interesting: th-cam.com/video/ZCdTxRASqiQ/w-d-xo.html. He also has a web site where he's documented the project: www.scullcom.uk/function-generator-mk2/. His videos have very good detail about why he made the design decisions he did, which I've always found very interesting. He also has several other similar projects - voltage calibrators, electronic loads, etc.
Nice Project Idea. I Noticed that the code for this specific project use alot of memory of the microcontroller. I would like to improve the code and send it to your email soon. All in all good job.
Greetings sir! if i am going to test the voltage of the dc motors that is connected on the arduino board using multimeter, does the arduino board will damaged? i am searching for hours about this but no information i got. i am hoping for your respond sir.
The channel is called noob for a reason. At 13:14 "we get pretty much the same values"... it's more than 2% accuracy with only 2 decimals resolution, when the cheapest multimeters out there have 4 digits or more with less than 1% accuracy! LOL "pretty much" doesn't mean "approximately" or "roughly" you now "my friend" ;) it means the value is bang on the same, within a microsopic hair.
@@ELECTRONOOBS bullshit. You said it yourself in the video: the ADC you're using has a precision of 0.9mV. Sure you can dispaly more digits but it's useless if they're not meaningful.
Read the datasheet of the ADC, you'll see that the glue resistors play a great role in the accuracy. And the daughterboard doesn't seem to use high tolerance surface mount resistors. It's not just the number of divisions that defines the accuracy and precision.
Thanks nice project. Do we need to sign up at electronoobs.io to get the gerber and stl files? At present the links on the electronoobs.io goto a localhost. Another question, can we get access to the schematics?
The pcb is bigger than you need. It could go smaller as the display dont have larger digits. I like the idea but dont like your pcb design, though I appreciate your affort for this prototype
Hey electronoobs pls will u reply my one question. Plsss, I made ir remote controlled using standalone Atmega 328 pu microcontroller which controls 8 relays but 1 relay connected to AC fan which after switching on it makes all relays turn off it's like it get reset to off positions. What should I do to avoid this🙄
How are you powering the relays? 5V from the Arduino? If yes, that's the problem. The Arduino doesn't have enough power to deliver to all relays. Use an external power supply for the relays
This is common problem for mcu working with AC. You have big EMI pulse wich is freeze your mcu. Shielding, grounding and using optocoupler could resolve the problem. Also in this case you have to use watchdog timer activated for reboot your mcu.
#Project #Request Plz plz Make arduino based #Rf #Spectrum Analyser range from Mhz to 2 ghz using rf modules like sl4432 , hc12 , Nrf24L01 , RDA5807M fm tuner. etc With feature of - Arduino Usb serial interface for better viewing resolution and better UI control using some open source spectrum analyser software . Also With Nokia graphic display attached with circuit for operability .it would be better if it would have Bluetooth included with this project because one can built related app (may be you ) using Mit Ai 2 App making Tool. That will be great project because spectrum very great tool when we are dealing with rf Radio frequency or making smps .
Sign up at ELECTRONOOBS.io: electronoobs.io/
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I am first
Now make a Multimeter with wireless probe. 🙄
Tazul Islam wireless oled to mount on glasses
@@markgreco1962 That is doable. But for this case it would be a little bit excessive.
what grate kit... good for tones of application with a serial connection..
20amp is a good choice
i would make it a hybrid to turn it on and off like lower the clock speed....and turn off monitor...so when you need to do a serial check crank the clock speed an read....
question
can you 90v dc reads or just 30v?
can you do AC herts check like is it 50 or 60 herts....
grate reusable modular addon for any project.....
with all the code what a bonus
Essential thoughts for the version 2.1. Make sure that the 4 mm banana sockest are 19.05 mm (0.75 inches) apart - this is the world wide standard for test gear. Include a 2x3 pin header location for ISP, this is very standard for Arduino-like boards. Consider tracking and pads for some sort of input protection. (And don't forget to get the display connector the right way round.)
Thanks for that tip!
i watched this video before but still cant get over how class this project is...
Nice project. I tool a look into your code
You consume many cycles inside the loop() method to identify the mode.
if( mode == 1 ) then... if( mode == 2 ) then... if( mode == 3 ) etc..
This project has to move to C++ and make a class object with inheritance
It can be super fast and probably can add more features later using the Uno.
Fantastic project! The serial port is an excellent addition! Good work, and thanks for sharing it with us!
Nyc, I've a suggestion for you, connect wirelessly to a PC or tablet or smartphone to overlay values on the screen.. this will be awesome 👌
Yes. This. It would be awesome to have all instruments readout on one monitor/tablet screen. Multimeter, resistance meter, oscilloscope, signal generator etc.
Nice work.
Two more ideas you could add, multi-channel voltmeter and square signal generator. Sometimes it is useful to see voltage on different points on a one screen. I do it by using analog pins, but you can implement multiplexer.
And max and minimum level buzzer, if current, voltage gets to high or low.
Instead of using the 328P and the bluetooth module you can use the ESP32 which have the bluetooth low energy option and have a so high processing capability, changing that ads1115 with other high sampling rate adc and you can have a low speed oscilloscope
I have a strong grasp of Arduino programming but lack the means to acquire Arduino boards, especially here in Ethiopia. Your support in obtaining these boards would make a profound difference in my journey. Thank you for considering my request.
can someone tell me that if we use this multimeter then we need to connect with laptop for code? or how it work?
simply just having an option for Bluetooth makes it better than most cheap meters you can buy!! but having an induction mode makes it a winner in my book,,, why it isn't on basic meters but capacitance is I would love to know.. class project and nicely done>>.
3:05
*FULL BRIGDE RECTIFIER* intensifies
Oh, sorry, wrong channel 😂😂😂
Ok I got it. You are talking about electroboom
Ha hahaha
Full bridge rectifiers will never be the same after Mehdi!
hhhhhhhh
Best project to end this year......
could be indeed that persons end..
can someone tell me that if we use this multimeter then we need to connect with laptop for code? or how it work?
Beautiful job, dude! Really well done!!! 😃
Looks like a great multimeter! I would buy one! 😂
OP this version is looking pretty cool
Excellent explanation of all aspects of the design. I was looking for this type of an application since a long time.
Cheers
Nice one! but you didn’t utilised ads1115 to it’s full potential I’m working on a multimeter for a week now and hopefully it will be completed in next few days, I will not be using any other ic except ads1115 and also I’m aiming for a resolution better than a 50$ multimeter it can even be able to detect micro amps of current. Great video btw!
Hi, Did you got to detect micro Amps of current? If so may we get in touch? I am having a big deal trying to figure how to make a uA meter.
Did you post this build to any site? It sounds great.
Call it C L I V R and it rhymes with 'clever'
Well Done Mate, you got another sub!!!
I can't wait for the Version 3 😊
I would be nice to add the Full Power Meter as you did in one of you old project, with Voltage, Current and Watt meter on the screen all together. 🤔 What do you think?
Excellent project. Really interested in transmitting the measurements to PC. Hope you keep improving this meter!
Me too. Just get all the info from all my devices on one damn screen. Makes perfect sense to me.
Very cool, looks sweet, except of the housing and that the switch is sticking out.
Your single tutorials about the single measurements are very helpful, especially for beginners, like usual for you and this is a sweet project that I would love to see improved, in first place use a different display, what it needs is a big good readable display, no one needs colors on a mouse-tv for this jobs, use one of those 12864 COG displays, with an UC1701 driver or something compatible, there are libraries for them aswell, they cost around 4€ and are the best right before the pcd8544/Nokia 3310 lcd's by the price-performance ration, have big pixels and are very nice to read, I am short-sighted but don't need glases for this even if it's a good distance away.
I want to build a propper multimeter, I mean a multi-meter, so a combination of a LCR-/Transistortester, multimeter and basic oscilloscope, maybe something else like a function generator, but stuck on the LCR-part, wish there would be an open-source code for the Transistortester from mikrocontroller.net, because I have no idea how to make the automatic-detection. I also want to use relays and pre-measurements, a protection through an op-amp or maybe something smarter, to make sure nothing will happen, if this, the connectors or cables burn it is bad enough, but I don't want to burn the whole circuit in case something happens, I never burned any multimeter or something like that, but this can happen any time to anyone, sure, it will make the measurement slow, but also gives the possibility to auto-range even the voltage. It will be not that small and I have a design in mind so it can be used as a desktop multimeter like as a mobile one.
But something like that is a lot of work and I would completely understand if you wouldn't want to make it open-source, I'm not sure if I would, if I get it done one day, because only the osci code is a propper book by the size.
the acs712 has a slow sensitivity isn't reliable with that adc. that adc has an internal voltage reference and since the acs is ratiometric, small changes in the supply current will effect the output of the acs while not affecting the adc. With ratiometric sensors, it is best to use an adc that accepts an external voltage reference or uses the supply voltage as the reference voltage (like the mcp3221), and then to power the acs and adc with that voltage reference. an alternative, would be to use a non-ratiometric sensor like the acs70331 which I've found to be more accurate than the acs712, acs723, .etc. when measuring currents
Can't wait to build it. Thanks.
Fantastic project! Thanks for sharing your knowledge, Thanks.
Briefly overlooked the schematic and code. It seems to me that you didn't use any ISR. Has this a reason? The analog comparator and timer routines sure would be more convenient and efficient.
Very awesome work, I have loved your work from the very beginning you are so creative and so easy to understand.
Excellent. I like it.👍
How do you read the negative voltages? U are using a full bridge rectifier so you always have a positive voltage on your analog input?! And the MB8S rectifier has a forward voltage (Uf) of 1V. So how do you read voltages below that value?!
Good project 👍👍, recommend add power supply mode and doide mode
this was great and iam going to order this pcb now
Sir kindly update the online buy link for these components because some of the components are missing and also short from the local market.
ngl i love the 'fuse'
Why use fusus when thin wire also works?
Wow!
Pretty darn awesome.
Thanks.
Another good project from you! I was wondering can you consider to explain membrane switch and panel and order a custom made one from the factory ? this way we can improve our product look thanks
Hmm I'll put that on my to do list
Can you serial all the data to the commport? I like the idea of all the test ports being separated. Its less prone to errors. And serialing all the data to the comport so it can be displayed by a gui program.
I've tried it, it was very difficult, had to match the code with the components used, and he was very accurate to set the accuracy, my device part of the amperage hovered before the load was passed, and the ADS analog pin was broken because of the voltage check forgot to turn the selector switch to volt, maybe I didn't put a diode on the resistor input?.. basically this is a good project for hobby! 🙂
So glad you make it. I'm happy you like it. If you want and have time, you can share your results on electronoobs.io so we can all see it.
Yes is a hobby project. Of course a commercial one will always be better. Good day!
awesome project, very well done!
This was a very neat project. I was very excited to see that bluetooth connection and listen to your thoughts on sending the data to a smart phone. With the Bluetooth Serial Monitor app you wouldn't even need a custom app.
I wonder how difficult it would be to have a data logging feature with an SD card or to have data logging on your PC. I do not know if a PC could data log from the bluetooth connection.
I see that the maximum voltage is 30 V DC. Using an external voltage divider circuit to step down the voltage and then calculate the real voltage is one way to increase this range. I'm wondering if there is some kind of probe that can be built that can be plugged in to step down the voltage sort of what goes into oscilloscopes.
Thank you for sharing.
what is the range of voltage? current/ resistance? inductor?
I am waiting for this video :)
Nice job
What an awesome project, the most awesome one :)
Disculpa y en español pero del mismo proyecto cuando???
can u build it with larger LCD..?? that would be better for practical use...
Awesome, keep it up,thanks for sharing.
It is a really good project
Great project sir .
Can you please make an egg incubator with humidity and temperature controller using Arduino and DHT 11 sensor
Please make a through hole pcb design for the same multimeter
great project sir but if you made the 3d printed case with some details of buttons and current position of rotatory also so it will be better too
beautiful project
Nice project, how can it be modified to make the input impedance for voltage high enough to be useful?
Hmm, maybe just simply more resistance at the input. But the ADC impedance is very high!
Hello Sir,Great Project ,I was eagerly waiting for this....
Instead of mechanical Rotary Switch Can't we use some Electronic Switch such as MOSFETS.......??
That should be for version 3
@@ELECTRONOOBS Can you Pls give me the idea which FET should I use to build one...? Actually I am going to build the same type of multimeter with more compact size and Features...
Somehow this does not sound like a very good idea considering all commercial meters also use a mechanical switch. I would assume this is to avoid the other parts of the circuit affecting the measurements.
@@ristomatti More like a mechanical switch is cheaper than a high voltage AC/DC SSR.
@@NiHaoMike64 You might be correct but I would assume Fluke wouldn't need to cheap out on materials on their high end models? An SSR would also require more power which should be used sparingly on a battery powered device.
Great video
Can you add impedance measuring to that design without much trouble? If you are going to do signal gen functions as somebody suggested then you have and AC signal from that.
Very helpful project.
Firstly i'm not a electrician if i wrote something wrong please correct me.
By reading acs datasheet there are only 5,20,30 amp versions.
I don't think that slide switch for current measurement will handle more than 0.5A and probably pcb tracks too. For programing pins why you use pads instead holes like in serial communication port it would by much easier to programm.
And lastly adding up all component cost that you listed it is around 70 USD + PCB + soldering time, for that you can get "realy good" multimeters. You have a lot of realy interesting project on your channel but this one...
Thank you for the tips, I'll have those in mind. The project is not for commercial use. Making this will teach you a lot, adn that's whay my channel is about. Pretty much all my DIY projects will cost more than just buying one... That's what industry dose, lowers the price because they sell millions products. Good day!
Can you please make a video where you make a active noise cancelling module
Me gustaría hacerlo... pero la pantalla la veo muy pequeña... Conoces alguna pantalla más grande para hacer el tester? Cambiaría mucho el codigo? Buen vídeo!!
Thank you very much this channel helps much. But i need help for my final exam,
Can i measure 15Volt DC using a Voltage sensor module (has 3 feet) and 20Ampere Using ACS712 Sensor module (also has 3 feet) and integrate both of them with ADS1115?
Is the arduino program can also show battery life?
Can I measure micro Ohms on this.
If not publish a micro Ohm Meter circuit to measure ground conductance.
very nice project!!!... please add ESR and Frequency counter/generator....
Great project. 👍👍
I think it will be cool if you add oscilloscope mode in your multimeter 😁😁😁
Oscilloscope needs speed. Arduino doesn't have enough speed ...
Owhh , i don't know about that
@@ELECTRONOOBS A graphing mode can be useful even if the bandwidth is limited to a few kHz.
Nice work!
That small switch cant handle even 5A. You should use some other switch otherwise great work :D.
Indeed, those rotary switches, even to proper LORLIN ones, are only rated for a couple hundred milliAmps. They are in no way suitable for switching any reasonable current.
Great project😍😍
Hi
Pls help with making automatic room cleaner
Bro, please make a video on diode measurement
again a great video........can you make a esr meter with arduino to check components on board without have to desolder? most of the time its a faulty capasitor to repair something but you dont know witch and desolder everyone is a pain in the assssaaasssss........
This project is great and best project. Can you make this vibeo 2nd episode how to connecte this to blueooth and its send data to home made google glass.i think its very important to us
Can this be used to check the smd capacitor value of the phone sir????
bluetooth communication using this board is possible or not
please give answer
if possible , how to connect its with your diy smart watch please answer
DIY a function generator please
Louis Scully has designed and built a couple of different function generators that you may find interesting: th-cam.com/video/ZCdTxRASqiQ/w-d-xo.html. He also has a web site where he's documented the project: www.scullcom.uk/function-generator-mk2/. His videos have very good detail about why he made the design decisions he did, which I've always found very interesting. He also has several other similar projects - voltage calibrators, electronic loads, etc.
Nice work
Nice Project Idea. I Noticed that the code for this specific project use alot of memory of the microcontroller. I would like to improve the code and send it to your email soon. All in all good job.
Greetings sir!
if i am going to test the voltage of the dc motors that is connected on the arduino board using multimeter, does the arduino board will damaged?
i am searching for hours about this but no information i got. i am hoping for your respond sir.
For this Pcb the Bluetooth communication is possible or not
Please answer
Hey dude! Can we add voltage and current graph to this multimeter?
Sir it is for dc measurements or also for AC measurements.... And range?
Regards
can someone tell me that if we use this multimeter then we need to connect with laptop for code? or how it work?
Can you make a VFD using arduino? Great vid man!
The channel is called noob for a reason.
At 13:14 "we get pretty much the same values"... it's more than 2% accuracy with only 2 decimals resolution, when the cheapest multimeters out there have 4 digits or more with less than 1% accuracy!
LOL "pretty much" doesn't mean "approximately" or "roughly" you now "my friend" ;) it means the value is bang on the same, within a microsopic hair.
That can be adjusted in the code with more precise testing...
@@ELECTRONOOBS bullshit. You said it yourself in the video: the ADC you're using has a precision of 0.9mV. Sure you can dispaly more digits but it's useless if they're not meaningful.
@@unperrier5998 0.9mV is a good precision for me, I'm not looking for a super multimeter. Those are 4 zeros decimals, 0.0009 V
@@ELECTRONOOBS you need to learn what is precision: www.designworldonline.com/how-to-determine-digital-multimeter-accuracy/ is a good start.
Read the datasheet of the ADC, you'll see that the glue resistors play a great role in the accuracy. And the daughterboard doesn't seem to use high tolerance surface mount resistors. It's not just the number of divisions that defines the accuracy and precision.
IF THIS HAS LIKE A 7 INCH DISPLAY IN A BENCH STYLE WITH ONBOARD T12 SOLDERING IRON AND HOT AIR STATION HOSE TYPE ITS ALL WE NEED
can someone tell me that if we use this multimeter then we need to connect with laptop for code? or how it work?
Thanks nice project. Do we need to sign up at electronoobs.io to get the gerber and stl files? At present the links on the electronoobs.io goto a localhost. Another question, can we get access to the schematics?
No, sorry for that, my bad. Try now: electronoobs.io/tutorial/81
is that the A70 or A50???
10:07 seems like something wrong with polarity D7 and C4 ;)
Plz plz make 1 Mhz to 2 Ghz frequency analyzer it's so costly to buy
What is the range?
The pcb is bigger than you need. It could go smaller as the display dont have larger digits. I like the idea but dont like your pcb design, though I appreciate your affort for this prototype
hi
I need a design of dc multimeter (current, voltage , resistance / connectivity) using arduino nano
can you please share the editable file of this pcb project. or open this pcb in online client and share the link please
Can you make arduino smart glasses?
Awesome
Hey electronoobs pls will u reply my one question. Plsss,
I made ir remote controlled using standalone Atmega 328 pu microcontroller which controls 8 relays but 1 relay connected to AC fan which after switching on it makes all relays turn off it's like it get reset to off positions. What should I do to avoid this🙄
How are you powering the relays? 5V from the Arduino? If yes, that's the problem. The Arduino doesn't have enough power to deliver to all relays. Use an external power supply for the relays
@@ELECTRONOOBS bro m using external power supply of 5v 1amp for relay and seperate 5 v for microcontroller
This is common problem for mcu working with AC.
You have big EMI pulse wich is freeze your mcu.
Shielding, grounding and using optocoupler could resolve the problem.
Also in this case you have to use watchdog timer activated for reboot your mcu.
Excuse me, did you mean FUUULLL BRIDGE RECTIFIER?! @3:06
#Project #Request
Plz plz Make arduino based #Rf
#Spectrum Analyser range from Mhz to 2 ghz using rf modules like sl4432 , hc12 , Nrf24L01 , RDA5807M fm tuner. etc
With feature of -
Arduino Usb serial interface for better viewing resolution and better UI control using some open source spectrum analyser software .
Also With Nokia graphic display attached with circuit for operability
.it would be better if it would have Bluetooth included with this project because one can built related app (may be you ) using Mit Ai 2 App making Tool.
That will be great project because spectrum very great tool when we are dealing with rf Radio frequency or making smps .
Hi bro resistor tolerance% and watts ??
how can i measure uA?
good
Bro please make a Diode meter
Great