I have problem where the MQCalibration is not working in the board of NodeMCU ESP8266 , while the coding works in the Arduino uno board(WIthout the IoT Blynk app part) I intended to do this project where if gas leaked, it will notify the user through the Blynk app phone Where the error state as be…

Declaration of function cannot work in different board

Topic		Replies	Views
error: was not declared in this scope Software	2	2398	May 7, 2021
NodeMcu with blynk Compiling error Programming	24	4394	May 5, 2021
Need Help Of Expert Programmer to Shorten Code Programming	24	6807	May 5, 2021
Suggestions for library to use with NODEMCU 8266 Wifi module General Guidance	55	7536	May 5, 2021
MQ2 Sensor and Fire Prevention Programming	14	3288	May 5, 2021