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...
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
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.
what I mean? The traverse rack gear is as far to the
left as it can go, so the switches are closed and the
is lit. There is also a line connected to the Arduino
so it knows it can't move any further.
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
For some reason the screen isn't very camera friendly, but
it really looks much better 'in person'.
the Arduino computer in this photo to wind a pickup coil
from beginning to end, so all I'll have to do is change
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
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... :)