[dustinbriscoe]

Hey guys. Just assembled my first speeduino and added an HC-05 bluetooth module, but I cannot connect to the ecu. I tried two computers and the msdroid app, but no luck. The connection between bluetooth devices (either pc to HC-05 or msdroid to HC-05) is there as the LED’s do the slow blink. Also the exact same HC-05 module was tested with a megasquirt and it worked. I checked the hardware on the board side looks good. I have 5v, gnd, TX>RX, RX>TX connected, but I cannot communicate with the ecu over bluetooth. And I did disconnect the usb cable from arduino before trying to connect over bt.

Has anybody dealt with a similar issue? I’m not sure what else to try.

[jonbill]

Did you programme the hc05 to 115200 as per the wiki?
https://wiki.speeduino.com/en/Bluetooth