The fact that every single 3D printed LED module case I've tried to print has failed due to bed adhesion issues should be a clue that I should stop trying ... or that they need more surface area on the first layer.
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All hail Plowy McPlowface
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And still, it can't beat the simplicity of an LED rope light. A pity they're so difficult to wire...
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Note to self - RGB LEDs can be obnoxious. Very obnoxious.
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Okay, looking at my brake, the disk option is not an option, and wouldn't be visible from both sides. So that's one less thing to worry about...
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A 3D printed module can be designed to clip to the spokes and lock in with some screws. That still won't stop someone from taking it, but having to remove several small screws impedes opportunistic scrappers.
The aesthetic of a module is also more bold. Rope light is 3/8" or 1/2" in diameter. LED strips vary from 5mm to 10mm wide. Both manifest as a narrow strip of light. Whereas you can model a module as you please - I even considered something shaped like a disk brake.
Much to think about.
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3D printing a LED module case from translucent filament is an option - either housing individual LED bulbs or short LED strips. But you're limited by what you can fit on your printer (or in a shipping box...)
The good thing about LEDs between the spokes is they're easy to remove. The bad thing about LEDs between the spokes is they're easy to remove.
LED strips adhered to the rim may wear off, or be ripped off by malicious actors.
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A slow day at work doing my silly little tasks has given me time to reflect on this weekend's bike wheel light tests.
A single LED strip or rope light along the entire rim remains the most straight forward solution. Rope light and narrow "neon" strips can serpentine between the spokes.
Alternatively, narrow LED strips can be adhered to the rim on one or both sides of the spokes.
Multiple shorter lengths can be used, but should be done in pairs. This makes the wiring more complex, though.
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Artists will really send you a screenshot of a dialog that says "This is a bug. Please file a ticket." and ask you a.) what it is and b.) what they should do.
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The year is 3157. Humanity has spread into the stars and diverged into several species.
Back on Earth, some systems are still running Python 2.
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I was promised a disappointingly small accumulation of snow and got nothing instead.
God really is dead.
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"...everything in this world, including money, operates not on reality..."
"...but the perception of reality."
"Posit: People think a bank might be financially shaky."
"Consequence: People start to withdraw their money."
"Result: Pretty soon it is financially shaky."
"Conclusion: You can make banks fail."
[imitates buzzer] "I've already done that. Maybe you've heard about a few? Think bigger."
Sneakers (1992)
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Okay, that's enough testing for one day. The various motorcycle and marine LED strips I ordered will arrive tomorrow, so I can do a vibe check on those. And I found some unusual side emitting LED flex strips from a small company called Oznium that might work well - some weird hybrid between a rope light and an LED strip. So we'll give those a try, too.
https://www.oznium.com/flexible-led-strips/led-flex-strips
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I got a larger version to print mostly successfully; one end peeled up from the bed while printing.
It fits between the spokes well, and I probably could make it longer and still fit. But that would involve some joinery because this barely fits in my print volume.
Because PETG is rigid, I can only slide it up the spokes so far - and it doesn't like to stay there. I'd have to model cutouts for it to clip to the spokes.
One alternative would be to mount it on the outside of the spokes.
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Trying to print a larger version of this arc light and having a hell of a time getting the first layer to stay down the whole time. Time to fiddle with some settings!
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Also, damn these flat top LEDs are bright! At least compared to the rope light I tested yesterday. It may also be that they have a much wider angle of viewing.
https://lighthouseleds.com/led-component-lighting/clear-top-dip-leds/5mm-led-flat-top.html
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But, again, a single light module makes your bike wheel more of a rave than a safety feature.
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The scale test of the 3D printed side light was a success. I only slightly melted the model while soldering the LEDs.
It's a little dim because these are UV LEDs left over from an previous project and there's only six of them. The translucent PETG acts as a decent diffuser.
I'm curious how long of a light strip I could do this way and still be able to thread it though the spokes.
[#]bikeTooter #diy #electronics #3dprinting
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...and then I immediately come up with a better design.
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After a good breakfast and a few hours of modeling, I have an first iteration of what I'm calling Pisces LEDs for the hidden math pun.
This segment is about 3" (7.6 cm) long - I can duplicate and combine it to make longer sections, with two limiting factors - the diagonal of my 3D printer bed, and threading it between the spokes. This may end having to be hinges pieces to allow for installation.
[#]bikeTooter #3dprinting
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