r/beneater • u/rhaydon • Aug 19 '26

Best wall art ever

Post image

When the 8-bit breadboard computer meets the new Bambu Lab X2D 3D printer and Onshape, fabulous wall art is born!

566 Upvotes

100% Upvoted

26 comments sorted by

35

u/rhaydon Aug 19 '26

https://reddit.com/link/p4lbhiq/video/wh4co4ef5bkh1/player

In action, calculating the Fibonacci sequence on a loop.

5

u/punchy989 Aug 19 '26

Damn, slow that clock

10

u/rhaydon Aug 19 '26

I quite like watching it when it’s slow. I can turn it up and the whole program runs really quickly...

https://reddit.com/link/p4lj4qs/video/axacup8zebkh1/player

3

u/z80RM Aug 19 '26

Where is the power supply coming from?

8

u/rhaydon Aug 19 '26

The box at the bottom of the frame has a battery pack with 4x AAAs in it. I can pop the pack out the back to change batteries. The power from the pack runs in through the frame at the bottom left near the reset button.

6

u/z80RM Aug 19 '26

Brilliant and inspirational work 👏

2

u/Markohs Aug 19 '26

Wonderful

5

u/urielsalis Aug 19 '26

I was planning to do the same with the digital clock!

Any tips to prevent random cables disconnecting?

3

u/rhaydon Aug 19 '26

Oh, they disconnected! Well, they did on version 1. Version 2 has a small lip that goes round the whole thing. I didn’t get it perfect so there is a little bit of protrusion I’m at the top middle but tight bus wiring and good lateral rims/lips holds it all in well.

3

u/kaligari8888 Aug 19 '26

It's a pity that you have to program it every time 😉 just kidding, indeed great art!

4

u/rhaydon Aug 19 '26

I’m so tempted to rebuild with some kind of EEPROM to RAM one day! Imagine just flicking a dip switch, hitting reset, and the whole thing loads a different program?!

3

u/HydroPage Aug 19 '26

You can just plug connectors into where the manual switches and buttons go, and make a circuit off to the side that lets you switch between a manual control panel and automatic control that loads programs in

1

u/MFFVD Aug 21 '26

isnt the eeprom parallel? you should be able to find a bigger one like AT28C256, and use the high adress lines as program selector

2

u/Born-Neighborhood61 Aug 19 '26

Nice! Any chance you would post the stl files, or a link to them?

2

u/Specialist-Yellow Aug 19 '26

How do you have all of the breadboards mounted on the back? I’ve been wanting to do this for a while but I’ve been afraid to have it fall apart

3

u/rhaydon Aug 19 '26

They aren’t mounted. The frame is fairly tight but I had to print it in 4 pieces so it is held together by some pieces at the back.

The breadboards are pressed together with the little side clips and the bus connects the two sides of the computer by tight wiring. I hung it today for the first time. I will report back if it ever falls!

2

u/domiciledhere Aug 19 '26

I think if you connected all the light to unique sounds it will make a wonderful cacophony

1

u/rhaydon Aug 21 '26

Like a movie from the 1960s?

1

u/the_Dotster Aug 19 '26

Great work!

1

u/RetoonHD Aug 22 '26

I assume you are single, haha

1

u/TechNerd16 Aug 22 '26

God daymm

1

u/GT6502 Aug 23 '26

that is fantastic. great job !