I was snowed in for a couple of days last weekend, so I started working on the computer control system
 for the 1940's Geo. Stevens pickup coil winder 'CNC robot' conversion I've been working on lately...

This is the prototype control board for the infrared LED turn counter sensor system I worked up.

As the mainshaft rotates, the black shutter at middle left also rotates at the same speed as the mainshaft, and blocks
or unblocks a beam of infrared light shining inside the sensor. This beam of light tells the Arduino Uno I'm using for a computer
when to move the traverse's stepper motor, which winds the wire onto the pickup's bobbin.

The green light is for the switches at top left - the traverse zero 'home' system. If the traverse is moved all the way to the left,
the light turns red and the Arduino shuts off the drive to the stepper motor so the drive won't crash.

See what I mean? The traverse rack gear is as far to the left as it can go, so the switches are closed and the red light
is lit. There is also a line connected to the Arduino so it knows it can't move any further.

Here is my Arduino Uno actually doing something useful... finally!

I bought this touchscreen monitor so I could run the Arduino all by itself without always having to have it connected to my laptop.
I didn't want a fullsized monitor, keyboard and mouse setup so I thought I would try this system instead.

The photo is kind of washed out because of the angle of the camera, but it's displaying the Angeltone logo as a test.
For some reason the screen isn't very camera friendly, but it really looks much better 'in person'.

I'm programming the Arduino computer in this photo to wind a pickup coil from beginning to end, so all I'll have to do is change the pickups
when they're full. If I want to change pickup types (like changing from winding Strat 5S7's to PAF pickup bobbins), the winding programs
this will use will be prewritten so all I'll have to do is upload the new program to the Arduino and load in a bobbin... cool!

This setup is now interfaced to the Stevens' infrared LED sensor control board shown in the top photo, and if there was a pickup mounted
to the winder when I took this it would have 66 turns of wire already wound on it. I still have to program the traverse stepper motor
when to move left and right in sync with the main motor and write a control panel program for this touchscreen monitor, and I'm basically done -
that is... after I make a table to mount the winder to, wire the power supply, mount the main motor, build the control box... :)

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