A custom designed Bluetooth Smart (BLE) to 916MHz module. It can be used to bridge any BLE capable smartphone to the world of 916Mhz based devices. This project is focused on talking to Medtronic insulin pumps and sensors. I am currently using it to display pump and sensor data in Nightscout.
Note: The device as is currently can not send large packets that are recongized by a medtronic pump, so this prevents some use cases, such as sending commands to the pump.
Please understand that this project:
- Has no affiliation with Medtronic
- Is highly experimental
- Is not intended for therapy
- There is a FAQ covering some questions about installing the firmware.
- @loudnate recorded a setup log of his experience.
See the hardware directory for design files to build a RileyLink. The hardware design is released under Creative Commons Share-alike 3.0. This board has small parts and will need to be reflow soldered; using a solder-paste stencil is recommended.
The code in the firmware directory runs on the RileyLink hardware. There are two main chips on the RileyLink, and thus two firmware images.
There are blue and green leds near both chips. The ble113 is on the upper right of the board, and the cc1110 is in the lower middle.
Blue for the ble113 indicates there are packets received and ready for a phone to pick up. Green means the phone is connected to the ble113.
On the cc1110, I blue is a timer based on/off, letting you know the firmware code is running. Green is toggled when a packet comes in.
The other red LED indicates charging.
The RileyLink iOS app connects to a RileyLink device via Bluetooth Low Energy, sends data to a Nightscout instance via the REST API, and shows the Nightscout display in a webview.
The MIT License (MIT)
Copyright (c) 2015 Pete Schwamb
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.