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geekhack Projects => Making Stuff Together! => Topic started by: Phenix on Fri, 11 November 2016, 09:13:03

Title: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: Phenix on Fri, 11 November 2016, 09:13:03

Hi
I would like to add bluetooth to my keyboards.
So I was thinking about some kind of adapter, basically:
Box in which batterys+hardware sits
one port for charging
two plugs (micro and mini USB

Is there some kind of guide for doing this? I only find guides for the Planck, but I cant really think of how to wire it properly.

charger:
https://www.adafruit.com/products/259

an battery:
https://www.adafruit.com/products/258

bluefruit EZ
https://www.adafruit.com/product/1535

Title: Re: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: redbanshee on Fri, 11 November 2016, 09:55:01

I use the Bluefruit EZ for a HTPC controller in my living room. But it is only 8 keys, I think you need to use the combination of the bluefruit EZ and a Pro Micro to get it to do more then 12 keys. It works really well for my uses though!


just saw this https://geekhack.org/index.php?topic=50183.0

Title: Re: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: Phenix on Fri, 11 November 2016, 12:02:53

Thanks for that link!
I am either using an xwhatsit (Model F) or an QMK based board.
So do you think i need another teensy in the bluetooth box?
(I am still confused if/how to do.)

Title: Re: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: redbanshee on Fri, 11 November 2016, 12:05:43

You have to use the Pro Micro to send the info to the Bluefruit EZ and then then EZ translates those commands and sends them to the PC over bluetooth.

I know thats how its done but I personally have not done it or researched it beyond watching the videos on the Adafruit site, and i think they mention it in on of those videos.

Title: Re: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: Phenix on Fri, 11 November 2016, 12:19:51

Well - so it goes like
keyboard (where QMK is used)
plugs into
pro micro
connected to
bluefruit EZ
connected to the charging port

Title: Re: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: feralfoo on Fri, 11 November 2016, 19:58:22

There is also the Adafruit Feather 32u4 Bluefruit LE https://www.adafruit.com/products/2829 (https://www.adafruit.com/products/2829). It has usb port, lipo battery power and charger, bluetooth and an atmega32u4. The CPU is overkill and it only has one usb port, but may prove more convenient as its a tiny all in one solution.

Title: Re: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: Phenix on Thu, 17 November 2016, 15:25:39

it is clocked at 8mhz,

in an other thread (also with bluetooth/MCU, cant find it atm) one mentions QMK runs at 16mhz - sure it will work?

Badly I cant do much programming, so I need pretty basic/easy to do things..

Title: Re: Question: Bluetooth (Bluefruit EZ e.g.) adapter
Post by: lucidinertia on Fri, 18 November 2016, 14:52:15

I may be in a similar boat.  I have signed up for Xmit's 104-key hall effect drop.  I use a Filco Majestouch Convertible 2 and love it as a HTPC and portable keyboard between stations.  I would love to enable that same kind of functionality, inside the board itself or with minimal modifications.