Casting Engine Parts from 3D Prints
https://hackaday.com/2026/08/28/casting-engine-parts-from-3d-prints/

After building a couple of internal combustion engines by milling billet aluminium stock and cringing at the absolute waste of material this created, [Camden Bowen] figured he’d give casting metal …read more (https://hackaday.com/2026/08/28/casting-engine-parts-from-3d-prints/)

DOOM Played on Series of 555 Timers
https://hackaday.com/2026/08/28/doom-played-on-series-of-555-timers/

It’s technically true that any piece of software can be reproduced in hardware, although modern software’s size and complexity generally makes this a non-starter. But if we go far enough …read more (https://hackaday.com/2026/08/28/doom-played-on-series-of-555-timers/)

Reviving an SD Card With Shorted Capacitors
https://hackaday.com/2026/08/28/reviving-an-sd-card-with-shorted-capacitors/

A nice thing about SD cards is that even in their non-micro format they are conveniently small. This is however a bit of a problem when an SD card stops …read more (https://hackaday.com/2026/08/28/reviving-an-sd-card-with-shorted-capacitors/)

This Library Needs to Be At Least… Three Times Bigger
https://hackaday.com/2026/08/28/this-library-needs-to-be-at-least-three-times-bigger/

Many of us have noted a tremendous price increase in many computer components for some mysterious reason. Whatever this cause is will be debated among the various modern philosophers and …read more (https://hackaday.com/2026/08/28/this-library-needs-to-be-at-least-three-times-bigger/)

Playing Snake with a Pneumatic Display
https://hackaday.com/2026/08/28/playing-snake-with-a-pneumatic-display/

[soiboi soft]’s vacuum-driven dot matrix display is part suction gripper, part touchscreen, and altogether impressive. Its display capabilities are entirely shadow-based, with each pixel being made of a cavity behind …read more (https://hackaday.com/2026/08/28/playing-snake-with-a-pneumatic-display/)

3D Printed Piano Action Faithful to the Original
https://hackaday.com/2026/08/29/3d-printed-piano-action-faithful-to-the-original/

A piano’s internal mechanism for translating a key press into sound is surprisingly complicated. It has to do a lot of things simultaneously and quickly: provide precise control over velocity, …read more (https://hackaday.com/2026/08/29/3d-printed-piano-action-faithful-to-the-original/)