DCI Drive

DCI stepper motor driver.

Stage

The provided stage. Marked "DCI MC-001".

Bottom of stage has four holes in a 2x2 grid. Holes are tapped for 10-32 machine screws.

ID of holes is 4.15 mm.

Pitch of holes in short axis (direction of motion): 50.53 mm

Pitch of holes in long axis: 79.55 mm

Top of stage has six 10-32 holes in a 2x3 grid. Spacing in both axes is 50.53 mm.

Joystick

The stage is meant to be manually controlled via a joystick.

The joystick module is a 2-layer PCB which generates step/direction pulses using one CD4046B PLL IC for each axis. This is clearly a prototype or low-volume product given that there are at least four obvious pieces of rework on the board.

Drive

The drive unit accepts step/direction pulses on a DA-15 D-sub connector. Only six of the 15 positions are loaded, configured as follows. All signals are 5V CMOS logic levels.

Pin number	Wire color	Function
1	Black	Ground
5	Orange	+10V power to joystick
9	Yellow	X axis step
10	Green	Y axis step
11	Red	X axis direction
12	Brown	Y axis direction

TODO: internal photos of the drive unit, back panel, etc