UHRSwitch, an UHR Switch for MegaEnigma

 UHRSwitch, an external attachment for MegaEnigma,. It connects to the plugboard and provides 40 different ways to scramble the plugboard connections. Some of the settings make the plugs non symmetric.

This is designed to work with MegaEnigma

https://arduinoenigma.blogspot.com/p/mega-enigma-machine-simulator.html

Description of Original UHR Switch (at CryptoMuseum)

https://www.cryptomuseum.com/crypto/enigma/uhr/index.htm

Design Notes (explains theory of operation)

https://arduinoenigma.blogspot.com/2020/05/designing-uhr-switch-for-arduino-based.html

Design Photos:

https://www.instagram.com/explore/tags/uhrswitch/

Test Vectors:

https://arduinoenigma.blogspot.com/2020/03/enigma-uhr-switch-test-vectors.html

Rotary Encoder is debounced using this algorithm:

https://arduinoenigma.blogspot.com/2020/03/pure-software-debouncing-of-noisy-re11.html

Bill Of Materials:

https://arduinoenigma.blogspot.com/2020/10/uhr-switch-bill-of-materials-bom.html