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Brain Surgery

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« 10 Cent Music Machine
I made a 10 Cent MCU Talk »
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#BUZZER #CH32V003 #COIN CELLS #DIY ELECTRONICS #HALLOWEEN #LEDS #LITHIUM CELL #MOD #PCB #RISC-V #TEARDOWN #TOY HACKING

I got one of these silly Halloween toys - they are kind of fun - but it feels like we can make them even more fun/annoying.

In the original toy, the head is pretty empty. There are a couple of LEDs sticking through the eye holes and these are powered by a couple of LR41 coin cell batteries wired up in series.

Not a lot of brains...

These are wired up in parallel and go into the body of the toy. It’s quite a clever mechanism when the arms are extended they close the circuit and the LEDs light up.

The Switch

That’s it. Super simple.

Original circuit

Here’s my version after a bit of “brain surgery”.

Brain Surgery

We’re using the PCB that we put together previously - it features a CH32V003 and a buzzer.

And here’s the new schematic:

New Circuit

This version has a small lithium cell powering my custom board. Originally, I was planning on powering things off a CR2025 coin cell, which would have worked, but I wanted more volume. After all, if you’re going to be annoying, you might as well do it properly.

#BUZZER #CH32V003 #COIN CELLS #DIY ELECTRONICS #HALLOWEEN #LEDS #LITHIUM CELL #MOD #PCB #RISC-V #TEARDOWN #TOY HACKING

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HELP SUPPORT MY WORK: If you're feeling flush then please stop by Patreon Or you can make a one off donation via ko-fi
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Chris Greening

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atomic14

A collection of slightly mad projects, instructive/educational videos, and generally interesting stuff. Building projects around the Arduino and ESP32 platforms - we'll be exploring AI, Computer Vision, Audio, 3D Printing - it may get a bit eclectic...

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