Week 10 - Output Devices

This week was a prime example of “How to Almost make almost anything.”

I spent so much time on this circuit, way more than in any other week.

For the AI Pin, I wanted to design an audio circuit. I didn’t realize until later that we could use a simple H bridge to drive a speaker. So instead, I designed a PCB around an entire audio amplifier.

Some background research on speakers

I found an amazing video where somebody built a functioning speaker inside a walnut!

Parts I used

The last is the amplifier. It’s tiny!

Designing the board

It took me a long time and lots of explanation from Anthony to finally get what I was doing and what I needed all the different parts for.

Milling it, unfortunately, was again a pain with the Roland.

But eventually, it was all done.

We were all still working late together at Quincy’s studio, since the REEF closed at midnight.

Simpler alternative with H bridge

I uploaded Neil’s code and it works.