DIY Alternator

This is an open-source 3d printable alternator designed to harvest energy from drainpipes however making the alternator is a great way to learn about alternator design, 3d printing and faradays law.

Steel rod (We used 8mm)

Bearings(We used the standard 22mm ones)

Iron Ferrite (Optional to improve efficiency)

Magnets (We used 3mm by 2mm by 4mm fridge magnets)

Lots of 3d printed parts

Print all the files from our GitHub page. We recommend 3 layers and 30% infill.

https://github.com/William-Woodard/Davidson

Use the custom drill attachment bit, wind 4 coils, try and do this as tightly as possible.

We used electric tape which worked :)

As you go round switch the polarity. Hot glue works.

Steel rod goes through the middle. On the rotors, you can use screws to attach them.

Try and optimise it!