[Srill]

hello Renzo,
I want to ask, why when I use Lora E220 (E220-400T30D) with an antenna (Tx433 JKD-20p) my ESP32 board always restarts when sending messages, but when I remove the antenna everything works fine receiving and sending messages. I use a supply from an 18660 4.2v battery and I have tried using 5v/3a, the results are still the same.

[Srill]

Yayy, it works! thanks.
I want to ask, is it possible for the LoRa E32 module to communicate with the LoRa E220?

[Srill]

in the following line

LoRa_E32 e32ttl(&Serial2, 15, 33, 32);

if i change Serial2 to:

HardwareSerial lora(2);
LoRa_E32 e32ttl(&lora, 15, 33, 32);

There are no errors, but when I upload it to the board, there is no data received or sent from LoRa or GPS, here an error screenshot

https://i.postimg.cc/h4NZC82N/image.png

• This reply was modified 4 months, 3 weeks ago by Srill.
• This reply was modified 4 months, 3 weeks ago by Srill.
• This reply was modified 4 months, 3 weeks ago by Srill.
• This reply was modified 4 months, 3 weeks ago by Renzo Mischianti.
• This reply was modified 4 months, 3 weeks ago by Renzo Mischianti.

[Srill]

Hi Renzo,
I would like to ask again. How do I define the hardware serial for the LoRa E32?
i want use UART1 for GPS and UART2 for LoRa, but when I define it as follows :

#define RXD1 12
#define TXD1 13
HardwareSerial neogps(1);
HardwareSerial Serial2(2);
LoRa_E32 e32ttl(&Serial2, 15, 33, 32);
[...]
void setup(){
neogps.begin(9600, SERIAL_8N1, RXD1, TXD1);
e32ttl.begin();

the system encounters an error like this.

invalid conversion from 'HardwareSerial*' to 'byte' {aka 'unsigned char'} [-fpermissive]

i use ESP32 DevkitC V4 board

• This reply was modified 4 months, 3 weeks ago by Srill.

[Srill]

After I checked the wiring as you suggested, here were several jumper cables that broken, wkwkwkwk. Two of the LoRa modules can transmit and receive messages properly, but one module can only receive messages because previously I tried it on Arduino without looking at the schematic you provided, and I didn’t use a voltage divider like your scheme.

thanks renzo. Have a great day!

[Srill]

This is for the screenshotScreenshot

[Author]

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