Putting Batteries Inside a Laser Cut Enclosure

A project log for (AT) Mega Enigma, a 2560 Pro Mini Enigma Simulator

A minimalist 139x171x50mm Enigma Machine Simulator with working plugboard using an ATmega 2560 Pro Mini and a custom PCB.

Arduino EnigmaArduino Enigma 01/14/2020 at 05:160 Comments

To put batteries inside a laser cut enclosure, one has to think in 3D using 2D:

The pictures in this article will show how:

And now that there is a built in battery compartment, then the question of how long will it run on batteries becomes more important.

The following article shows a method of measuring run-time by writing timing checkpoints to EEPROM, no external components needed.