4U001 - Touch Activated Keyboard in a well known dual

in a well known dual fashion

The output is 66

A high level into the HOLD input will hold the current output level

mounting holes - 3

In case the card is used wrongly

4U001 - Touch Activated Keyboard in a well known dual4U001 Touch Activated Keyboard A true recreation of the original TKB. 4 rows, maximum 16 steps per row, with dedicated CV output (A, B, C and D) and an ABCD output (selected by the Vertical Clock). Keyboard Voltage and Pressure outputs, Reset, Random Select, This version uses the original design as a core and it is as close as possible. The only additional mods are the followings: static discharge protection for the MM74C150 vertical stage indicator