I like to share with you all my project oiyshTerminal.
It's a solution for not only my need's Every one who want to have own IoT server on own device now can install all the puzzles with one click.
It's a solution to get a working instance of Node-red on android in termux. So after installation you have a full shell an android.
With working apps on ports:
ssh :2222
mosquitto :10883
mysqld :3306
grafana :3000
nodeRed :1880
For now it's only for android and I think 7 or higher. Termux 118 tested.
Access to apk and there is also at the end debian in chroot directory.
I have previously put Node-red in Termux on a very old Android, probably a Google Nexus 4, the most elegant phone I've ever had but sadly useless nowadays.
I found it very slow, certainly wouldn't want to add grafana and mysql!
I'm sure your project will be very handy with a more powerful phone/tablet
You need to give it a try. There will be some problems with repositories from termux. But one time I set it up on my Nexus 7 running 4.0 android.
Plan with it is to have a fast way to set all important things in one go.
On cheap cheap accessible every ware device. You can buy/find phone in a locker
Later use important apps for you. Node-red, mysql ...... add something in C. there is a gcc ready!
After installer finish.
I'm using it for yyyyy svg instruments