I'm investigating for some function of Lora E32-TTL-100. Currently, I can communicate between two E32 like the following image: Lora need MCU

But 3 days ago, I saw a person used only one MCU to scan the other E32 is power-on or power-off. Lora without MCU It's so interesting, and tried many way, but wasn't successful. I found many documents but they always mention communicate 2 MCUs + 2 Loras.

Again, the purpose is how to do for the 1st E32 know that the 2nd E32 is power-on. Can anyone please help me with it or have any ideas about it?

This's the link I followed https://www.mischianti.org/2019/11/10/lora-e32-device-for-arduino-esp32-or-esp8266-fixed-transmission-part-4/

This's the schema to simulate it: Thank.

I'm investigating for some function of Lora E32-TTL-100. Currently, I can communicate between two E32 like the following image: But 3 days ago, I saw a person used only one MCU to scan the other E32 is power-on or power-off: It's so interesting, and tried many way, but wasn't successful. I found many documents but they always mention communicate 2 MCUs + 2 Loras.

Again, the purpose is how to do for the 1st E32 know that the 2nd E32 is power-on. Can anyone please help me with it or have any ideas about it?

This's the link I followed https://www.mischianti.org/2019/11/10/lora-e32-device-for-arduino-esp32-or-esp8266-fixed-transmission-part-4/

This is the schema to simulate it:  Thank.

I'm investigating for some function of Lora E32-TTL-100. Currently, I can communicate between two E32 like the following image: Lora need MCU

But 3 days ago, I saw a person used only one MCU to scan the other E32 is power-on or power-off. Lora without MCU It's so interesting, and tried many way, but wasn't successful. I found many documents but they always mention communicate 2 MCUs + 2 Loras.

Again, the purpose is how to do for the 1st E32 know that the 2nd E32 is power-on. Can anyone please help me with it or have any ideas about it?

This's the link I followed https://www.mischianti.org/2019/11/10/lora-e32-device-for-arduino-esp32-or-esp8266-fixed-transmission-part-4/

Thank.

I'm investigating for some function of Lora E32-TTL-100. Currently, I can communicate between two E32 like the following image: Lora need MCU

But 3 days ago, I saw a person used only one MCU to scan the other E32 is power-on or power-off. Lora without MCU It's so interesting, and tried many way, but wasn't successful. I found many documents but they always mention communicate 2 MCUs + 2 Loras.

Again, the purpose is how to do for the 1st E32 know that the 2nd E32 is power-on. Can anyone please help me with it or have any ideas about it?

This's the link I followed https://www.mischianti.org/2019/11/10/lora-e32-device-for-arduino-esp32-or-esp8266-fixed-transmission-part-4/

This's the schema to simulate it: Thank.