It all started when...

I ordered the moto:bit from Sparkfun.

I wanted to build a robot for my daughter’s Girl Scout troop to play with. One thing I needed was a way to make the BBC Microbit’s sound functions audible to a room full of 9 year old girls. I didn’t find anything that was as small and loud as I wanted so I build my own.

Top: Sparkfun Redbot Buzzer – This was just the wrong part. It isn’t really designed to be a speaker.Middle: The first prototype – A dismal failure.Bottom: Success! – Loud and small.

Top: Sparkfun Redbot Buzzer – This was just the wrong part. It isn’t really designed to be a speaker.

Middle: The first prototype – A dismal failure.

Bottom: Success! – Loud and small.

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Order from OSH Park

Below you see the v1 PCB, which was the dismal failure, retrofitted to prove the new speaker design for the next version. From there I breadboarded the LM48310 audio power amplifier circuit hooking it up to the PUI Audio AS02008MO-R speaker glued to this board.

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Birds of the Damned (v2)

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Minty Punk Console