hello,
Has anyone tried using the NodeMCU LOLIN ESP8266 V3 CH340.
when programming I used a type C cable so it could connect to my Arduino IDE,
but after I finish programming, and I want to turn on this device, can I use a cable to the motherboard pin?
If possible, please provide information on which pins should I attach my negative and positive DC cables to? and what voltage range it can use
Yes.
It depends on the board you've got (the diagram doesn't show your actual board). Most of these boards use a AMS1117 linear regulator. You can connect a 5V supply or a little higher (let's say up to 7V or so) to the "Vin" pin. Or you can feed 3.3V into the pin marked '3V3'. In both cases GND pin needs to be connected to GND (minus) on your power supply.
The exact voltage you can safely feed into the Vin pin depends also on how you intend to use the ESP, in particularly whether you'll use WiFi, BT etc. Stick with 5V to be sure.
okay, thank you @rsmls , I initially thought about the Vin, but I didn't dare to do it yet, and I tried asking first, because my units are limited, if it fails I will have to wait more time to buy the item
[image]
The image didn't make it through. However, my suggestions expressed in #2 should be a safe starting point.
Btw, the easiest solution is to use a generic USB adapter ('phone charger') and plug that into the board's USB socket.
hello @rsmls ,
Thank you for your advice sir. This device does not plan to use AC current, sir, because its purpose is to detect AC current, I'm afraid that when the power is OFF, the device will also be OFF.
You could always power it from a powerbank.
copy sir,
I'll try to think about it
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