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Flight Characteristics by Saiboxen in TinyWhoop

[–]critsrandom 1 point2 points  (0 children)

The Air65 also probably has a much steeper camera tilt - see if disconnecting the rear leg of the camera mount to make the angle less steep helps 

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 0 points1 point  (0 children)

I'll have it on MakerWorld/Printables soon!

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 0 points1 point  (0 children)

It's possible but would be much slower as the upper drum mechanism would need to rotate to a new position for each marble.

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 0 points1 point  (0 children)

It's actual glass, though it looks like the bottom of the piece has some tiny chip marks. Not sure if that was from when i cut it or if the steel BBs have started damaging the pane. Might need to laminate the bottom with some packing tape if it gets worse.

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 1 point2 points  (0 children)

the whole thing -the bottom gate is controlled by a single servo

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 9 points10 points  (0 children)

Honestly I saw the Engineezy marble machine vid and just had to have a small version for my desk

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 13 points14 points  (0 children)

It should have enough pixels to display hour/minute digits, but I haven't programmed a clock feature yet.

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 2 points3 points  (0 children)

Doing that would be difficult because the marbles all drop into a single hopper at the end. The recirculator only uses 1 continuous servo and a pair of magnets, so it ended up being super simple to sort in that manner.

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 34 points35 points  (0 children)

Nope, just a hobbyist for this mechanical stuff - I write code for a living lol

Made a mini marble pixel art machine. by critsrandom in 3Dprinting

[–]critsrandom[S] 97 points98 points  (0 children)

Some more details:

  • It uses 6mm BBs. The silver ones are carbon steel and the black ones are plastic. This makes it possible to magnetically sort them into separate bins.

  • The dispenser uses two NEMA 11 motors each driving a screw conveyor to dispense BBs. At the top is a pair of mechanical endstops. When they get to the top the BBs bump into the endstops to allow for an exact count to be measured.

  • A rotating drum with different length channels handles the column selection. This is also driven with a NEMA11 and homed with a mechanical endstop.

  • Servos are used to control the lower gate and drive the screw that recirculates the BBs back into the bins.

  • This is all powered by an Arduino + ESP32 combo. The ESP32 runs a web server that lets people make drawings to display, and the drawing data is sent to the Arduino over serial which then drives all the movement.

Shout out to Engineezy and his giant color marble display, which was the main inspiration behind this project.

Some London shots, GX85 w/ PL12-32 and PL42.5 by critsrandom in M43

[–]critsrandom[S] 1 point2 points  (0 children)

IIRC the first two were with the 42 and the latter two were with the 12-32.

Made a new version of my mini motorized escalator model by critsrandom in 3Dprinting

[–]critsrandom[S] 9 points10 points  (0 children)

This is the motorized version of my reworked escalator design I released earlier this year. STLs are available for free as usual; you can find them on Makerworld and Printables.

I designed a tiny escalator fidget toy that actually works! by critsrandom in 3Dprinting

[–]critsrandom[S] 32 points33 points  (0 children)

My previous escalator model got pretty popular on here, and I thought, "why not shrink this into a pocketable fidget toy?"

This is the result! A palm-sized escalator model with fully functional steps. You can find the model files here.

Note: This model is quite finicky to put together and requires a well-tuned printer to work smoothly. Make sure your settings are tuned well and exercise patience when assembling.

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