Search found 2 matches
- Thu Jan 12, 2023 2:58 am
- Forum: Hardware
- Topic: ESP32 not Communicating with SIM900a
- Replies: 1
- Views: 1445
- Tue Jan 10, 2023 3:20 am
- Forum: Hardware
- Topic: ESP32 not Communicating with SIM900a
- Replies: 1
- Views: 1445
ESP32 not Communicating with SIM900a
I am using NodeMCU - ESP32 ( https://esphome.io/devices/nodemcu_esp32.html ) with SIM900a Mini Version 3.8.2 and trying to connect them through serial. However, the AT commands I send return -1 always. Here is my code: #include "HardwareSerial.h" HardwareSerial SIMSerial2(2); unsigned long previousM...