HACMAD - Handheld Arduino-Compatible Multi Accessory Device

The HACMAD is a project consisting of a handheld base unit and interchangeable sensor dongles. All of the code for each sensor is pre-loaded in the main sketch. Each dongle has resistors that the base unit uses to determine which portion of the main sketch to run.

Build Log is located here:
http://hackaday.io/project/836/log/1995

Available files:
Main Case
Dongle Shell, Basic-Top (used for whatever)
Dongle Shell, Basic-Bottom (used for whatever)
Dongle Shell, Tachometer-Top (use