Hey there, I am quite new so please bare with me if there is already a topic out there I just couldn't find or this may not be a proper space to ask for a different kind of device.
I recently purchased an AT-09 with HM-10 Firmware/Hardware to use with my MicroBit, as I wish to use it for many kinds of remote controls for sending it commands by tapping buttons. However, the AT commands on this module are always responding with "ERROR ". The PIN Out of the Micro:Bit is using these pins and their connections:
Micro:Bit > Bluetooth Module
P0(TX) > RX
P1(RX) > TX
P2 > KEY/EN
Additional Pins:
VCC (3.3V/5V) > VCC
GND > GND
The code I programmed is a simple "AT\r\n" serial string while putting the KEY/EN from Low to High before sending the command. All I receive is an ERROR string... no error code or anything else, just ERROR. I am using a BAUD Rate of 9600 and to the specified pins. Just wondering if anyone has the additional knowledge they don't mind sharing. (If anyone has some GitHub Libraries that help me properly program this with a Micro:Bit, that would be amazing! I do have an Arduino UNO but I will need to get a new cord for it since it broke 
Again, I am new to using this little powerful module. Any kind of tips is very much appreciated! I will be trying a few more ways and research a little more through the web too.
3 posts - 3 participants