PHCC Daughterboards
From PHCC
explain Daughterboards here.
Input
Pushbuttons, Switches, Rotary Switches, and similar.
Output
Analog
Digital
Servo
Stepper
Aircore
D'Arsonval Meter Movement D'Arsonval galvanometer movement.
LED, 7-segment displays, and other segmented displays
Other
USB interface
Quadrature Rotary Decoder