02. Printing I didn’t take pictures of the build process, so use you’ll have to use your imagination!
03. Use sandpaper to smooth the spray paint；
04. Install the thermal printer；
05. Load the battery and power supply module into the printer
The power part is quite tricky. After testing, I found there was insufficient power from the battery to power the thermal printer (Such power-consuming equipment!). Now as I have already started to re-modify the power supply part, the pictures below can only serve as a reference. I will change them once the final draft is finished.