Battery Powered CYD Klipper Case

I saw TT's video about this display and the CYD Klipper project and immediately thought about how it would be neat to have a battery powered version that I could carry around with me in the workshop as I go from machine to machine. Thus the battery powered CYD Klipper was born. 

I elongated the original case and added friction fit slots for the TP4056 and Li-Ion battery and a hole to mount a small toggle switch. I also added a holder for the stylus to try and mitigate my inevitable losing of it. I used the connector that came with the display for the power connections to the display. I am planning a V2 which uses a smaller charging circuit and uses a magnetic mounting system for storage and charging, but I want to spend some time with this version to make sure it functions reliably and to get a better idea of its endurance. 

I suggest printing in PLA Pro or PETG to avoid snapping the stylus holder in use. I used Polymaker PLA Pro and it seems to be hanging in there for now. This is my first model that uses a friction fit holder that is expected to see significant repeated strain, so further testing is needed to see if PLA Pro will cut it.

OnShape Link

Battery Link Amazon

Battery Link Aliexpress

Endurance Update:

I left the device on for about 20 hours connected to my three Klipper printers. Whenever I went down to do something on my printers I used it to control them instead of their local interfaces. At the end of the day the screen was flickering but still usable. Overnight at some point the battery dropped below the shutoff voltage on the TP4056 and it turned off. I think as a temporary device you keep in your apron or by the door, turn on while you're doing maintenance, then turning it off when you leave, you can expect it to last a week or two. This will be aided when I roll out a second version with a magnetic charging mount.

I modified the case to add slots for a battery, charge controller, and switch. The internal wiring required adding a slot to the inside of the case to allow for wiring the power to the CYD. I also added a slot for the stylus to keep it all in one contained package.