Started with the idea to fit a small single board computer with WiFi into the SMART Response XE.
A Raspberry Zero W would have fitted it perfectly, but unfortunately I had any available in the lab (and delivery times were too long).
After some trial and error I managed to find and fit a NanoPi Neo Air in the battery compartment.
Unfortunately that raised another problem, how to power the device?
The immediate idea was to fit a USB power bank inside to retain the important feature of recharging and powering down the device.
That didn’t work as smoothing as I thought. Battery size like 14335 and over where too big for the case.
So I disassembled a small 2S battery for a micro drone and used both cells.
About the software, it was pretty straightforward. Replicate a VT100 terminal running on the onboard ATMega and comunicate with the single board computer using serial.
I’m planning to release the source code and some schematics soon.
Keep update on my GitHub account https://github.com/chmod775