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u/-2811

🔥 Hot ▲ 186 r/shittyrobots+1 crossposts

built a machine to flip a coin. that’s all it does.

Hitting the coin with 12V solenoid. it took 5 versions to get here. The ONLY thing it does is flip a coin and bring it back to the center for another round.

u/-2811 — 12 hours ago
🔥 Hot ▲ 271 r/doohickeycorporation

The coinflipping department is proud to present its newest prototype

After our latest merger with the Department of Gravitational Randomness, our engineering team has developed a precision coin-outcome delivery system. Five prototypes were required. Three interns were lost. Patent pending. Pre-orders available Q4.

u/-2811 — 13 hours ago
▲ 1 r/NewTubers

How long do you spend on a single video before you just have to ship it?

Genuinely curious. I make engineering/build videos and I'm deep into one right now that's been in production for way too long. And as I've heard before "great is the enemy of good". I feel like i just end up procrastinating and pushing back the release date...

What's your "ok this is done" signal?

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u/-2811 — 3 days ago
▲ 2 r/hobbycnc

Good source for aluminum extrusion in Europe?

Building a custom frame for a project and need a decent amount of 2020 and 2040 extrusion cut to length. Based in Europe so shipping from the US isn't ideal.

I've used Motedis before and they've been solid, but curious if anyone has other go-to suppliers. Especially for cut-to-length orders without insane minimum quantities. Bonus points if they also stock brackets, corner cubes, t-nuts etc. so I can do one order.

Any recommendations? thx

reddit.com
u/-2811 — 3 days ago
▲ 8 r/led

TIL 24V addressable LEDs are individually addressable per 6-LED segment, not per LED

Been working on a project with SK6812 RGBW strips and switched from 5V to 24V for the power distribution benefits. Somehow didn't fully register until I was deep into layout planning that 24V addressable strips wire 6 LEDs in series per IC... so each "pixel" is actually a 6-LED chunk.

Obviously makes total sense electrically (6 × 4V forward voltage ≈ 24V), but if you're coming from 5V where 1 LED = 1 pixel, it's an easy thing to overlook when planning pixel density. Solution, for me is WS2815 12V addressable LEDs! Had to change the entire power delivery architecture of my build, but damage has been contained :)

Figured I'd share in case anyone else is mid-project and hasn't thought it through yet.

u/-2811 — 3 days ago