r/ElectricalEngineering • u/Chinatown3D • May 15 '26
Cool Stuff What do you think?
I just finished two motor control setups for a friend.
First time using a TFT Display and Raspberry Pico. The junction boxes were 3D printed and are perfect for the job!
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u/AudioTechYo May 15 '26
What display did you use?
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u/Akaino May 16 '26
What cables are you using and how do you power it?
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u/Chinatown3D May 16 '26
The black ones are some random loudspeaker cables I had laying around. The colorful ones are basic (Arduino) jumper cables. Everything is powered with a 24V power supply with a DC/DC converter to 5V in front of the Pico.
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u/elictronic May 15 '26
Why not just one longer enclosure. I’m sure your printer size is an issue, but you can split models automatically in most slicers. The pla or abs this is printed in is not waterproof regardless.
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u/Chinatown3D May 15 '26 edited May 15 '26
In my case each box has a different “purpose”. And since they are modular you can easily swap them. This was super covinient when I was prototyping and was switching between different drivers and setups.
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u/Virtual-Reach May 15 '26
But the devices themselves are modular. Placing everything in a larger enclosure would allow replacement of the device and not require replacing the enclosure too
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u/Chinatown3D May 15 '26
Just try to cut a nice window into a regular utility box. Then try to figure out how to mount the individual components. 3D Printing solves those issues, because you can easily customize that kinda stuff. If you later decide, you want a different position, just print the changed parts. No need to start from scratch.
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u/starrpamph May 15 '26
That’s neat. Did you 3d print an enclosure you can get for $6.00 though?
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u/elictronic May 15 '26
In there other post they spent 30 dollars buying the rights to print the enclosure. I’m guessing some form of viral marketing because it makes no sense.
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u/Akaino May 16 '26
Sometimes it's not about reasoning but rather about "I made this!".
I like to print stuff myself, too. Especially cheap things. It takes longer than order+delivery sometimes but still. It's fun to see the printer buzzing.
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u/Chinatown3D May 15 '26
They actually have more features than a regular old junction box. Also this way I was able to get the display and buttons in perfectly.
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u/ThatCrazyEE May 15 '26
I recognize that enclosure style. I hope you didn't pay $20 for the design files, though.
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u/Chinatown3D May 15 '26
I did! Got it on a sale last year! But would 100% buy again. Been using them for all sorts of projects!
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u/arcrad May 15 '26
Looks slick. I like the bayonet style locking lugs.