I attach your code modified by me, try it.
Notes:
- Check that none of the pins assigned to LCD is assigned to Serial1 too.
- Connect to ground the MODE pin of transmitting and receiving KQ-130F modules, to select Custom mode of operation.
- The module KQ-130F needs approx. 1 second to transmit 10 bytes; if your string is for example 40 bytes
long, you must wait at least 4 seconds before sending another string, otherwise transmitting buffer will
overflow. - If you modify MAX_LEN, set the same value in receiving and transmitting code.
Android_wifi.ino (2.95 KB)
receivecrct.ino (1.05 KB)