Javascript/Node.js drivers and protocol implementation for Minna KGoal kegel exerciser
npm install kholeReverse engineered drivers for the
Minna kGoal kegel
exerciser.
The kGoal is a Bluetooth LE Kegelcizer device, made to communicate
with iPhone and android phones. The kHole project aims to make the
device accessible to other platforms, such as desktop, arduino,
Raspberry Pi, and other bluetooth accessible systems.
In terms of communication, the kGoal is a fairly simple device, It
uses BTLE to connect to a host, with no pairing or long term key
exchange. After this, the host can do the following things:
- Request the values of the internal pressure sensor
- Set whether vibration feedback happens via "Squeeze Pillow" or
"Control Arm"
That's pretty much it.
To read information from the device, issue a characteristic read
request to handle 0x2a. This should return a 19 byte value, similar to
the one below:
00 01 04 01 9b 07 67 00 00 00 00 00 00 00 00 00 00 00
The important values are:
- bytes 3-4 (0x019b in example) - This is the big-endian calibrated
sensor reading, starting from 0 based on the last calibration
setting and going up. Calibration can be reset by hitting the button
on the top of the toy, which makes the LED turn green.
- bytes 5-6 (0x0767 in example) - This is the big-endian uncalibrated
sensor reading. It'll always report the same range no matter the
calibration setting.
In the case of our example above, the calibration point was set at
0x767 - 0x19b = 0x5cc. If the uncalibrated reading is <= 0x5cc, the
calibrated reading will just read 0x0.
The WebBluetooth implementation of the library allows access to the
aforementioned functionality thru web browsers supporting the
WebBluetooth API. At the time of this writing, the only browser
supporting this is Google Chrome >= 54 for Mac, Linux, Android M, and
Chrome OS. Windows is currently not supported, but hopefully will be
soon.
_NOTE:_ Node.js support not yet implemented.
The node.js implementation in the library allows access to the
aforementioned functionality. It uses the bleno library
(https://github.com/sandeepmistry/bleno) to access BLE. It should work
on mac and linux with no special work necessary. It will work on
Windows if WinUSB drivers are used for the bluetooth dongle.
kHole-py is BSD licensed.
Copyright (c) 2016, Metafetish
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