Slotter part 2, with control details

[tonyfoale]

I made a recent post describing my pneumatically powered slotter/broacher to fit a lathe or mill. Here it is if you did not catch it
Slotter or broach driver.

This post ties up some loose ends and describes the control. Schematics are shown below and the Arduino programme code is shown in the intro comments of this video;

Here is the schematic for the control, which is fully explained in the video.



and some random pix of the Arduino and pre-Arduino boards, which show just how simple it really is.

Pre-Arduino control.

Arduino control.

Control board bolted to top of solenoid valve. Finger points to relay.