Hi, i’m trying to communicate 2 NodeMCUs using serial communication.
The first NodeMCU acts as master that connected with an OLED LCD 128x64 and a RTC ds3231
and the other NodeMCU as the slave with MPU6050 accelerometer sensor.
I am trying to send sensor value from slave to master using SoftwareSerial. It works at first but after i plug it out from the power source and plug it in again it stops showing values on serial monitor.
I2C.ino (2.3 KB)
MPU6050-KalmanFilter.ino (6.77 KB)
SERIAL_UNO.ino (6.1 KB)