Sort of in continuation of this post [Bluetooth Module JY-MCY HC-06]
I was looking at the waveform on the TX pin of my HC-06 Buletooth module (connected to the RX pin on the Photon). and this is what I see when no pull-up is used (either connected to the Photon or not). Probe is set to 1X.
And this is with a 47K pull-up.
I see no improvement in the waveform whether the module it powered from 3.3V or 5V I just can’t see how this would work without a pull-up even on an Arduino, honestly.
I just received 2 HC-05 module today. I’ll try them later tonight or over the weekend and post my findings here. But I’m curious. Do folks have these modules working on the Photon and if so how? Or an Arduino for that matter. It should be noted that:
- With a pull-up I don’t encounter any issues whatsoever with regards
to data loss or gibberish data
- When connected to my PC via FTDI USB to Serial, and no pull-up I
have no issues with the Bluetooth module when working with it via a
Are the levels and waveform typical or is the module I have somewhat of a dud?
: Photon - Serial1 vs Serial - Bluetooth Module HC-06 [SLOVED]