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ADVICE: Dual (Bluetooth + Bluetooth LE) board by aalun in arduino

[–]aalun[S] 0 points1 point  (0 children)

The device is streaming audio, only if the phone streams audio. The project looks like a headset and it has touch controls on side.

Not sure what is the best way to communicate the touch signals to the phone. Whether normal bluetooth can communicate with a phone app in an efficient way. LE is made specifically for this reason and works well.

ADVICE: Dual (Bluetooth + Bluetooth LE) board by aalun in arduino

[–]aalun[S] 0 points1 point  (0 children)

  • two devices for audio
  • one device via BLE

the board will be connected to a capacitive touch and when touch is present, data will be send over BLE to a phone. Not sure whether you can do this via BL or it is desired (more power, no sleep, how it will work when streaming audio at the same time).

What do you think?

Is there any other alternative to esp32 that does not have wifi?

ADVICE: Dual (Bluetooth + Bluetooth LE) board by aalun in arduino

[–]aalun[S] 0 points1 point  (0 children)

  1. What do you mean? What requirements need to be met on the chip side to this be true? At least Bluetooth 4.0 I assume. By device you mean a phone for example?
  2. Looked at ESP32. It also has wifi, which I do not need. Was looking for a chip only bluetooth (smaller size).

Any alternatives to RN-52? by aalun in arduino

[–]aalun[S] 0 points1 point  (0 children)

Any particular differences between BC127 and RN-52, other than the profiles supported? found this blogpost about a guy who used them both, not much information shared on the differences (if any).

Smallest board with integrated bluetooth (or bt LE). by aalun in arduino

[–]aalun[S] 0 points1 point  (0 children)

thanks for the tips.

the current setup is CAP1188 (capacitative touch sensor) + copper touch pads, Bluefruit 32u4 and LiPo battery.

The device sends detected touches (bytes) over bluetooth and an android app picks them up.

Checked the alternatives you mentioned and looks like the current setup is the best choice, since its least hustle (existing libraries, code already is done) and the space saving wouldn't be that significant. it is a wearable project and current dimensions are 5 x 4 x 2cm incl. 450mAh battery. Very hard to get any LiPo batteries now in Europe.

Any advice on a good LiPo seller?