I have an ESP8266-01 and I want to send sensor data from Arduino to ESP8266 via serial communication but the data I receive is not correct, I tried changing baud rates but no luck, here is the code Code for ESP8266: #include <SoftwareSerial.h> void setup() { // put your setup code here, to run …

Can't send data to ESP8266 via arduino

UKHeliBob September 1, 2021, 6:53pm 6

Have you taken into account that most Arduinos work at 5V whilst the ES8266 works at 3.3V ?

In addition, do the two systems have a common GND connection ?

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