i trying to sent AT commands to thr Tel0124 modem via the Arduino serial monitor. i can send a sms though a program, but would like to send at commands via the serial monitor to get the correct code sequence for connection to a sql server using a php model. even when i write just AT in monitor nothing comes back. What di i need to do to be able to write at commands in monitor
2023-05-08 19:35:17
pls upload the code and choose Baud Rate@ 115200, Format@ Carriage Return.