DIY Pickup Winding machine built on an ATmega8

[J0K3RX]

Stumbled onto this project, thought some might be interested... Schematic, source and hex compiled for ATmega8 @ 8Mhz
http://davidegironi.blogspot.gr/2014/05/a-pickup-winding-machine-built-on.html#.U5PhwXJdXK1

https://www.youtube.com/watch?v=gNgywx7ITok

[greaser_au]

One wonders why do a complicated uP design when a very simple glue logic design will do the job. If it was completely automagic (as in set it up & walk away), then I could see the value.   All that said,  I suppose it would be a lot less wiring than a few counters & 7-segment displays - but (I expect) a LOT more effort in code - especially in a high-level language like C*. There was a time, not all that long ago, when a nice veeder-root mechanical counter would have been cheaper still

david  (transformer/coil winder from WAY back!)

*I designed, built and coded a coin rejector programmer for electronic coin mechs using an 8031 and 2x16 row display (in 8051 assembly) about 20 years ago.

[Mac Walker]

Looks like an analog output to control the speed, the DC motor has it's own PWM controller?

If you are going to take the leap to a micro-controller, I would think it would be easier to get a stepper motor from an old printer, and use a few digital outs, with transistors to step up the currents/voltages, and run the stepper motor directly...

Then a simple counter accumulates your # turns (scaled for steps/revolution).

Using an analog output requires a properly scaled integration function over time to accumulate the  # turns, especially when using a ramp up function.

The alternative is a handlheld drill, and LCD counter, a magnet, and a reed switch.....the last three can be had from China these days for about $12....

[PRR]

Instead of an actual counter, you can use the *cheapest* calculator. (Does not work on better calcs.)

Wire your switch across the "=" key.
Press "1" then "+".
Turn. Each pulse does a "+1" and the count goes up.

[haveyouseenhim]

Instead of an actual counter, you can use the *cheapest* calculator. (Does not work on better calcs.)

Wire your switch across the "=" key.
Press "1" then "+".
Turn. Each pulse does a "+1" and the count goes up.

I saw a YouTube video where a guy used a calculator and a sewing machine to wind pups. He wired a momentary on the sewing machine to a calculator. Then used the machines footpedal to control the speed.

That's the way I would wind a pup. Seems like a simple effective way to do it.