Remember Gpio 9 need external pull up resistor

Where on wemos d1 mini is GPIO9? I was looking for a pinout on Google, but I'm not sure. And should I short it to ground or 3.3V? https://raw.githubusercontent.com/ermaya/Supla-esp8266-arduino-Ide/master/supla_Termostst_oled_sensor/wemos-d1-mini_Gpio9.jpg https://raw.githubusercontent.com/ermaya/Su...

Here you have the last state. #include <FS.h> // ---- esp board manager 2.4.2 --- iwip Variant V2 higher Bandwidth #include <ESP8266WiFi.h> #define SUPLADEVICE_CPP #include <SuplaDevice.h> #include <math.h> #include <DNSServer.h> #include <WiFiManager.h> #include <ArduinoJson.h> //--------- https://...

Doing readings of 30 volts with a resolution of 10 bit does not give more.
Anyway using lithium batteries in series without balancing seems like a very bad idea.
With a 4€ chip it solves all the problems, I would use BQ76930.

It is not ideal but it will work.



Channel 0 to 6 show the voltage of each segment and 7 the total voltage.

There are many examples and the communication protocol is there.
for example this.
https://github.com/nseidle/BMS

I think it would be better to use for example BQ76930 to balance, protect and read the voltages of the batteries controlled from esp8266 through I2C



It would be a much more effective design.

What is being used to balance the batteries?

I will see it as soon as I have some free time.

W atmega czy attiny na początku zawsze ustala się piny wejście/wyjście oraz ich stan wysoki/niski w Arduino nie widzę nic takiego. Chciałbym zmienić stan dla GPIO, które odpowiada za konfigurację pod przełącznik dotykowy, który wystawia po dotknięciu stan wysoki. Czy w Arduino nie dokonuje się taki...