Author Topic: Anyone used an Adafruit Feather 32u4 Bluefruit LE?  (Read 537 times)

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Offline LifeIsOnTheWire

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Anyone used an Adafruit Feather 32u4 Bluefruit LE?
« on: Fri, 06 January 2017, 13:58:45 »
https://www.adafruit.com/products/2829

Its a bluetooth Teeny-like device, and has an ATmega32u4.   Does anyone have any experience with it?  Can it run TMK or QMK things?



Offline priyadi

  • Posts: 126
  • Location: Depok, Indonesia
Re: Anyone used an Adafruit Feather 32u4 Bluefruit LE?
« Reply #1 on: Fri, 06 January 2017, 16:24:14 »
QMK supports those. I'm typing on a handwired using Feather 32u4 BLE right now. Amount of pins is a little too short, though, only 17 are available. You will need an IO expander or some creativity with your matrix, even with a 60% keyboard.
Boards: Filco TKL+HID Liberation, Infinity 60%, Sentraq S60-X, Whitefox, Ergodox, Planck.
Member of the flat keyboard society.
Keycap manifesto: "Key sets without vendor neutral Super key are worthless"

Offline orihalcon

  • Posts: 201
Re: Anyone used an Adafruit Feather 32u4 Bluefruit LE?
« Reply #2 on: Fri, 06 January 2017, 22:05:50 »
Is it possible to load Soarer's Converter firmware on one of these?  Sounds too simple to me, but hey, won't know if I don't ask.  I am guessing that the problem is that if used like a regular Soarer's Converter instead of a controller, it would require a lot of power to run the original keyboard's controller basically making the low energy part kind of useless.  I can imagine a project enclosure that basically just has a large battery inside plus the Feather 32u4 that you could plug an old model M into so as to use it with an iPad or whatever device wirelessly.  Not sure the latency would be very good though with BT LE.  Thoughts?

Offline priyadi

  • Posts: 126
  • Location: Depok, Indonesia
Re: Anyone used an Adafruit Feather 32u4 Bluefruit LE?
« Reply #3 on: Fri, 06 January 2017, 22:45:02 »
Is it possible to load Soarer's Converter firmware on one of these?  Sounds too simple to me, but hey, won't know if I don't ask.  I am guessing that the problem is that if used like a regular Soarer's Converter instead of a controller, it would require a lot of power to run the original keyboard's controller basically making the low energy part kind of useless.  I can imagine a project enclosure that basically just has a large battery inside plus the Feather 32u4 that you could plug an old model M into so as to use it with an iPad or whatever device wirelessly.  Not sure the latency would be very good though with BT LE.  Thoughts?

As a matter of fact, I ported TMK's terminal_usb code to QMK to revive several old 122 keys Model Ms. I'm using Teensies, but it should be trivial to use it with the Adafruit controller.
Boards: Filco TKL+HID Liberation, Infinity 60%, Sentraq S60-X, Whitefox, Ergodox, Planck.
Member of the flat keyboard society.
Keycap manifesto: "Key sets without vendor neutral Super key are worthless"

Offline LifeIsOnTheWire

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  • Posts: 33
Re: Anyone used an Adafruit Feather 32u4 Bluefruit LE?
« Reply #4 on: Tue, 10 January 2017, 09:06:19 »
QMK supports those. I'm typing on a handwired using Feather 32u4 BLE right now. Amount of pins is a little too short, though, only 17 are available. You will need an IO expander or some creativity with your matrix, even with a 60% keyboard.

Thanks for the reply, that is great to hear.

I'm considering using one for a 30% keyboard, so the 17 pins is more than enough.

Offline zl_ramiel

  • Posts: 4
Re: Anyone used an Adafruit Feather 32u4 Bluefruit LE?
« Reply #5 on: Thu, 12 January 2017, 13:07:32 »
QMK supports those. I'm typing on a handwired using Feather 32u4 BLE right now. Amount of pins is a little too short, though, only 17 are available. You will need an IO expander or some creativity with your matrix, even with a 60% keyboard.

Will there be a noticeable lag when you use it?

And how long could the battery lasts?