Electronics Tutorial: How to make power supply for Nodemcu ESP8266 wifi module using a Regulator
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- เผยแพร่เมื่อ 23 ก.ย. 2018
- Download Circuit diagram:
www.electroniclinic.com/5v-3a...
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Nodemcu esp8266 wifi module board installation and blynk library:
• Nodemcu esp8266 wifi M...
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• how to make a schemati...
how to use a digital Multimeter:
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Description:
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In today’s episode you will learn how to make your own power supply for nodemcu esp8266 wifi module, so that it can be easily powered up using a 12v adaptor or a 12v battery or any other dc voltage source. The source voltage should be greater than 5 volts and less than 35 volts. In this tutorial you will also learn how to add female headers so that it can can be easily interfaced with arduino uno or other electronic circuits. Let’s get started.
The components that we will be needing for this project are
1. Nodemcu ESP8266 wifi module.
2. 5x7 cm vero board
3. 470 uf capacitors, we will need two of these.
4. Female dc socket
5. 7805 voltage regulator, the first leg is the input, the middle one is the ground and the third one is the output.
6. Led, the longer leg is the anode, and the shorter one is the cathode.
7. 330-ohm resistor and
8. Female Headers
The components purchase links are given below. If you want to learn how to install the nodemcu board, and how to install the blynk library then you should watch this tutorial, a link is given in the description.
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Purchase links for Components with best prices.
Nodemcu ESP8266 WiFi Module:
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LM7805 Voltage Regulator:
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470uf capacitor:
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330-ohm resistor:
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DC Female Power Jack:
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Female Headers:
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Male Headers:
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LEDs:
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Buddy, if Im using a 3volt cell. Do I connect it to Vin and Gnd. Will esp light up?
Sir...I have used 12v 2a power supply for node MCU and uploaded the code of controlling it by BLYNK through WiFi. So for how much maximum time, can I run it continuously.
Please reply
Sir why we need a 7805 ? You can connect 12 volt directly to node MCU.it has a built-in voltage regulator in it??
will we face any problem if we use breadboard instead of veroboard??
Hello, can I use a breadboard instead of a veroboard, as I do not have a soldering iron. Would it work the same if I do everything you did, except I used a breadboard?
yes, you can use a breadboard, so far you follow the same exact connections.
Can we connect esp8266 wifi module and arduino uno
And power up esp8266 wifi module by using buck converter y4183 instead of regulator
Power supply for wemos d1mini pro connect to 5v or 3v ?
Nice Job! A question: Do you think I could use 680uF capacitors instead the 470 ones? Thanks!
yes you can
Is it possible to use a 1000uf capacitor
Hello, if I use the same method as yours to feed the voltage to the ESP8266 via the Vin, can I connect an OLED screen that is fed from the 3V point of the ESP8266 without any problem?
Yes you can.
i put a powersuplly 5 directly connected to VIN, but the nodemcu led it doesn't show up.. why is it? can you help me?
@Electronic Clinic
Hello friend. I have a NodeMCU with CH340G chip. When i connect usb to my pc and connect 12V battery to Vin, i have broken down usb port of pc. Are USB port and Vin port directly connected together inside of card? do you have a information about that?
Thanks for your help.
You can not connect two power sources at the same time. Using the USB port and then using a higher current pin on the Node caused a current spike back into you USB from node. Google on how to work safely use the USB section when other power sources are connected or monitored would help you.
can i use that output regulation for esp32 and some sensor? also i need 3.3v, can it be done with AMS1117 connect to 7805 output?
i am using the same for the esp32 as well. check playlist.
Good idea.How much Amp current is needed for Nodmecu?
upto 170 mA.
as per the datasheet.
thanks
sir can you post a link to the datasheet thank you
Cant i directly give the 5V dc to the vin pin of the nodeMCU ..PLZ reply
yes you can directly give 5v and ground. it doesn't matter wether if you are using 7805 or a 5v adaptor. but don't power up the nodemcu module using the arduino's 5v, coz it won't work. it will keep disconnecting. use external power supply.
i personally recommend you should use 7805 voltage regulator and use 470uf capacitors on the input side and output side. its really easy. then you can connect even a 12v adaptor or battery.
Thanks you very much... appreciated
Hi. Shouldn't the input voltage for the esp8266 be 3.3V instead of 5V?
This is nodemcu esp8266.it has onboard 3.3 volt voltage regulator.
@@ElectroniClinic can a 9V adapter be used instead of 12V?
yes, of course, you can use. in this power supply, 7805 voltage regular is used so you can use voltages greater than 7 and less than 30 volts.
why use the capacitors ? can i use a 9v battery and an lm7805 only to power nodemcu?
if you don't use the capacitors your nodemcu module will keep resetting.
sir can i directly power my nodemcu v3 esp8266 on my phone adpter 5v 2amp
yes, of course you can.
@@ElectroniClinic ty very much sir...
Can i use it while upload the sketch from arduino IDE?
??
if you connect the nodemcu module with the arduino default serial port then you can't upload a program. you will need to disconnect the wires.
I'm having an error while i upload: espcomm_upload failed
i
Hey, Please help on this. I've 7805 and 470 uf capacitor at input and output same as you've done. I checked the output is 5v that i've plugged in to esp8266 and also tested the same for esp32.
The relay is then connected to the esp board.
When i plug only one channel of my 2 or 4 channel relay, it works great but when i use 2 or more channels of it, after 5 mins, i see it fluctuating. I tried very hard, but couldn't find reason or any way to solve it.
what is the power rating of your 12v adaptor?
@@ElectroniClinic its 12V 1 AMP DC
use at least 12v and 2amps
Okay, for 4 channel? I'll be buying one, Should i buy higher further in case i want to use 8 channel or something?
Also, can you help me understand, how this works, so that i can do the calculations as per need in future. So far what i know, relay needs some 30-40 mA for one channel, so i was in assumption that, 1Amp should be enough.
Hey i got the adapter plugged in and observed for 2-3 hrs, it works. But, i'm still trying to figure out the logic.
Sir, can you provide me the circuit diagram of this power supply? Its little bit confusing to understand the circuit.TIA
check link in the description.
i added the circuit diagram on my website. link is given in the description.
@@ElectroniClinic Thank you
Can I use L7805 instead of LM7805?
Yes, but before you use this, watch my video on 5v and 3A power supply.
works correctly with 5v?
perfectly. check my latest videos, in which i am using the PCB.
How does esp8266 works on 5v ? is it suppose to work on 3V to 3.6V.
you can connect 5v with the vin pin.
@@ElectroniClinicBut datasheet specifies upto 3.6V how is it possible ?
I have used the same circuit but 7805 and the nodemcu is heating up.
No. I have been using this. It never heats up. Check my new designed pcb for nodemcu
Bro why esp8266 not responding after 15 minutes,