Unfortunately, the price of the hardware and consumables is unbelievably expensive requiring parts to be purchased second hand through eBay and diabetic forums. The protocols for communication and exporting of data are often proprietary which has required a significant amount of reverse engineering. The supported hardware today is limited a subset of insulin pumps and CGMs.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.