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Old 27th Feb 2021, 12:14 pm   #198
Travellingwave
Pentode
 
Join Date: Jan 2021
Location: York, North Yorkshire, UK
Posts: 155
Default Re: My first telly TV22

I have gathered the bits for my LOPT rewind

1. Arduino Uno with stepper motor shield
2 stepper for winding axis
3 stepper with lead screw for traverse axis
4 0.2mm magnet wire
5 transformer tape

The rest of bits I can 3D print

There are quite a few arduino based coil winding machine projects on the web for inspiration

My first step will be to set up the existing primary coil on the stepper motor and do a controlled unwinding and use the arduino to count the turns for me , I could do by hand but don’t want to lose count

I will 3D print a suitable bobbin to wind the primary onto and exactly reverse the process with new wire and a layer of tape between each layer.

That’s the theory at least!

Will video as I go and if successful post it on youtube
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