I am using ESP8266 (D1 Mini) to extract battery data from its BMS via UART (software serial). The pins which I am using are D1 and D2 of the ESP8266. The problem is that the data is coming fine and serial communication is working all good but as soon as I connect a 2+6 Electric Vehicle Charger Plug Socket, UART stops working and data stops coming.
A 2+6 Electric Vehicle Charger Plug Socket has been used to supply power for the rest of the devices.
Any suggestions? I really appreciate any help you can provide.
I am guessing that the charger turns off all other uses of power while charging the vehicle. What does your volt meter show for the power to the ESP8266 while charging the vehicle?
Hello Paul,
Yes, esp8266 is getting the power.
I guess you will just have to make a block diagram of all the stuff you wrote about, including lines showing the connections. Take a picture of it and add it to your next post to the forum. I have no clue about anything you wrote.
Please post an annotated schematic that clearly shows how everything is wired, including all power and ground connections, power sources, and any external hardware such as resistors, as suggested by @Paul_KD7HB. Additionally, include a clear picture of your setup and provide links to the technical documentation for each hardware device.
Avoid linking to marketplaces like Amazon, as they typically don’t provide the necessary technical details.