Projects involving circuits, sensors, microcontrollers, MIDI hardware, or any logic‑driven physical mechanism. Covers both analog and digital builds, from simple LED gadgets to complex control systems.
This is a placeholder for the John Smith Busker Organ.
Plans available here: John Smith Organs - Busker
This takes a MIDI signal through a standard DIN cable and outputs it to logic level signals that can be used by microprocessors etc to do fun stuff like displays or sounds.
Now I can make as many of these as I need! It is also a component of the MIDI in/out/thru interface.
Here's a view of the hammer mechanisms mounted onto plywood plates and set in place in the instrument case that will become the glockenbox
I was designing a circuit with Copilot and it just couldn't get the components to connect correctly, so I asked Coppy to draw me a picture of a 6N138, an 8-pin DIP. It invented these.
This is my street organ, based off of plans for the John Smith Topsy 3. It's not pretty, but it works!
I started work on this contraption November 2022. The construction has been an adventure in and of itself.
Several tasks and iterations to bring the glockenbox into fruition!
This article documents a compact, mirrored, dual‑channel high‑side driver designed for 12 V pallet magnets using the IRF9520 P‑channel MOSFET. Each channel includes a gate network, flyback protection, indicator LED, and a manual test button. The design is optimized for clarity, repairability, and modularity.
This article documents a compact, mirrored, dual‑channel high‑side driver designed for 12 V pallet magnets using the IRF9520 P‑channel MOSFET. Each channel includes a gate network, flyback protection, indicator LED, and a manual test button. The design is optimized for clarity, repairability, and modularity.
