String(int) causing SOS safe mode

[MikeP171]

@nrobinson2000

Could you possibly elaborate on your hardware setup?

My hardware setup is in this post, with picture from June 8.

Casting Variables for I2C

Hi Guys, I was able to get my project to work finally, albeit the inverse setup I originally intended, with the Arduino as the master. This current setup is with the Electron as the Master. Here is my setup with code and output to follow. [image] Arduino slave: #include <Wire.h> void setup() { Wire.begin(); Serial.begin(9600); Serial.print("setup has completed.");//mp } void loop() { Wire.beginTransmission(1); Wire.write(234); //modify this! //numerical 256 is the limit on this -…

@ScruffR

I’d rather put the Serial.print() statement out of the onReceive() callback, just as I wouldn’t put a Serial.print() statement into an interrupt handler.

Are you saying move the Serial.print into the setup right after onReceive()? Not quite sure what you are suggesting....