Category Archives: MCP6002

Scrap a Hard Drive, Build a Rotary Encoder

There’s something to be said for the feel of controls. Whether it’s the satisfying snap of a high-quality switch or the buttery touch of the pots on an expensive amplifier, the tactile experience of the controls you interact with says a lot about a device.

[GreatScott!] knows this, and rather than put up with the bump and grind of a cheap rotary encoder, he decided to find an alternative. He ended up exploring hard drive motors as encoders, and while the results aren’t exactly high resolution, he may be onto something. Starting with a teardown of some old HDDs — …read more

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Posted in BLDC, coil, comparator, encoder, hardware, hdd, MCP6002, windings, wye | Leave a comment

Pedal-Pi, simple programmable guitar pedal

For several years, [Ray] and [Anna], the team behind ElectroSmash, have been smashing audio electronics and churning out some sweet DIY audio gear. This time around, they’ve built Pedal-Pi — a simple programmable guitar pedal based around the Raspberry-Pi Zero. It is aimed at hackers, programmers and musicians who want to experiment with sounds and learn about digital audio. A lot of effort has gone in to documenting the whole project. Circuit analysis, a detailed BoM, programming, assembly and background information on related topics are all covered on their Forum.

The hardware is split in to three parts. On the …read more

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Posted in BCM2835, guitar effects, guitar pedal, guitarpedal, MCP3202, MCP6002, pi zero, Raspberry Pi, raspberry pi hat | Leave a comment