P.S. Today I built a new widget to my i3 setup, displaying the current glucose and the trend. https://i.imgur.com/VnZ23vO.png
AndroidAPS and OpenAPS do not work with all the same hardware, So you choose your rig based on your CGM and Pump model.
If I'd be him, I'd start by trying to get my hands into Dexcom G5 system or if he doesn't have a good insurance, the Freestyle Libre has some unofficial bluetooth readers available that work with Xdrip. First you get your continuous glucose monitoring working and then start thinking about automating the insulin delivery.
These projects started because we're not waiting. The organization behind is called Nightscout and their website has information how to build the needed hardware:
Now the pump manufacturers are seriously planning to bring closed loop systems like I have here to the market. The only model right now that has some of the features is Medtronic 670g, but in comparison, if you know what you're doing, building an open source rig will give you much more control and features than the commercial offerings. This might change in a couple of years though.
Forgetting to bolus and accounting for the dawn phenoemenon are pretty challenging in a backpackers routine. :-)
Of course using it in pump is a different story, especially if you have a CGM with the pump. Right now I'm using the SMB algorithm in AAPS, that can help with unannounced meals by giving small boluses if it thinks you ate something. The same mechanism pretty much evens out my dawn phenomenon.
One thing you should know before trying Fiasp is the molecule size is much larger and might cause stinging feeling when the pump gives you dosage. Try to get a pump that goes slow with the dosing, otherwise the first couple of months might be a bit unpleasant. You'll get used to it though and I don't really notice it anymore.
Always calibrate when you are not sure.
G6 promises a no-calibration mode, but has a hard stop for sensors after 10 days. With G5 and calibrations you can double or triple the sensor lifetime (with xDrip).
https://www.nature.com/articles/s41541-018-0062-8
My little sister is type I and using the BCG vaccine in this way blows my mind.
For glucose monitoring I use Dexcom G5 sensors[0] and xDrip[1] open source monitoring application for Android.
Insulin delivery is handled by a Accu-Chek Spirit Combo[2] pump, that is one of the rare pumps with a Bluetooth connection. The entity deciding the basal rates and corrections is an open source Android app called AndroidAPS[3].
As an insulin I use the fastest available analog Fiasp from Novo Nordisk, that works 10-15 minutes after injection.
All of these combined together has dropped my A1c results from 7.5% to 5.5%, being 90% of the time between 4.0 mmol/l and 8.5 mmol/l, and having no severe hypoglycemias. Basically I got myself some more years to live without any complications and in general I feel much better when I can sleep my nights without worrying and can eat whatever I want whenever I want.
Oh, and a warning to everybody who tries this: Accu-Chek will not cover any damage, there is nobody taking any responsibility of the results from the treatment you get out of the software. For me this works much better than any other treatment, but for others it might be even dangerous.
[0] https://www.dexcom.com/g5-mobile-cgm
[1] https://github.com/NightscoutFoundation/xDrip/
[2] https://www.accu-chek.com/insulin-pumps-integrated-systems/c...
[3] https://github.com/MilosKozak/AndroidAPS/