When working with LoRa modules, like E220 correct, configuration is a must. This sketch eliminates one hurdle in troubleshooting; why is LoRa module not working as expected. Commands 1, 2, or 3 are entered in Serial Monitor; Message (“Enter to send message”) text area. Only tested on E220 LoRa module.
E220 LoRa module configuration sketch
Sketch provided by Claude (Anthropic) AI.
Regards,
William