Issue in using a BLE module HM-BT4502

Thread Starter


Joined Mar 9, 2022
I'm testing some of BLE modules, and actually I'm using the HM-BT4502 (of HOPERF).
I already used one that works in a quite similar way (HC05), that we use an uart communication to send and recieve data for setting the device. The HM-BT4502 works also by using UART communication, but the device doesn't give any answer at all.

I used an arduino board for comunication with, and used different bode rate, but nothing as response.

Did any one did the same thing, or may have a suggestion ?

The datasheet of the HM-BT4502 is attached ?