Winging it

Sniffing sugar - well decoding Bluetooth data off an Aidex glucose sensor anyway.... Some background on getting the data off an Aidex glucose sensor for my telemetry tracker . The sensor appears to use Bluetooth LE broadcast packets to output its status and data for alerts, which is rather convenient. Realised I hadn't added details of the tools/software used here! The  AdaFruit BLE Friend  is used to capture the data, this can be viewed in WireShark   Interestingly since the Aidex system uses a more advanced (so I assume more expensive) chip compared to the Libre the sensor design is split into two, the sensor contains the battery and the sensor wire which clips into the unpowered transmitter unit. It's a shame to see that the lifespan issue (which I had wondered about) has been solved by including a small disposable lithium battery inside each sensor patch, there must be a better, more environmentally friendly way to build these things. (My first sensor expired so I too...

I decided to switch my homebrew tracker over to a RAK5010 board:   New board! I thought it was going to be an ideal choice since the previous tracker based on the A9G had needed lots of tweaks - a fix to the power circuitry, adding a charging board and had no inbuilt ANT+/Bluetooth so I'd had to add a second radio board also. The homemade (up to build version 9) unit was getting a bit clunky: Getting a bit crowded in here (also the development support for it is effectively dead with no opensource firmware and multiple unresolved known bugs) so the idea of a single all-in-one board was attractive with the RAK5010 based on the Nordic NRF52 chipset with integrated BT/ANT+, charging circuitry and a BG96 GPS module on board.  I thought this would be a much better platform.... That was the idea. Predictably after playing with it for a bit I do already have a wish-list for their next version, and pondering alternatives or building myself a custom board. The current wishlist for th...