Hi everyone. I have a strange problem with this module.
I have a tcall board marked with BLYNK V.1.3 20190610.
On this module a write my own software using modem and it work correctly.
About a few days ago i buyed a new board on marked BLYNK V.1.4 20-08-11 that have some harware differences. Different (bigger) jst for battery, a new power led, and so on. The problem is that when i flash the same software on the new board nothing works. It seems that the at command response with echoed command.
Example:
I i send AT+GSN\r\n on the first board it response with
OK
The same command on the second board response with
AT+GSN
OK
I treid the commad AT+CGMR on both boards and the response is the same
Revision:1418B05SIM800L24
Please help
Thanks
Hi everyone. I have a strange problem with this module. I have a tcall board marked with BLYNK V.1.3 20190610. On this module a write my own software using modem and it work correctly. About a few days ago i buyed a new board on marked BLYNK V.1.4 20-08-11 that have some harware differences. Different (bigger) jst for battery, a new power led, and so on. The problem is that when i flash the same software on the new board nothing works. It seems that the at command response with echoed command. Example: I i send AT+GSN\r\n on the first board it response with