Kernel Bob 
[ugh, I typed this yesterday morning but forgot to click the "toot" button.']
Here it is, printed and installed. Fits. Looks acceptable. It clicks into place very satisfyingly, maybe a little tight.
(Yes, it's the #FilaBillyHumidor.)
5/
Thinking about the FilaBilly Humidor's LCD screen, it occurs to me that I could repurpose a phone. A phone has a good sized screen, a fast processor, maybe a GPU, a case, and a bunch of unneeded features and bloated software.
Aliexpress has lots of phones under $50. I wonder if anyone has turned them into hacker-friendly non-Android Linux boxes.
🧵 62/N
The LEDs are not wired up yet. That can come later. I'll need to make a PCB and program an ESP32. And I intend to add more LEDs along the left and right edges of the cabinet, where they'll have to do tricky things to avoid the hinges.
Next after the weatherstrip, though, I want to mount the dehumidifier to a rail and route the drain hose out. Then I can turn it on and test it.
🧵 61/N
Here are a couple more photos. The center channel sits flush with the fronts of the shelves.
Now I need to apply the foam weatherstrip. I am expecting to have to try a few iterations of weatherstrip, and that's okay. The way the doors move on their hinges, they're going to tug the weatherstrip sideways, and it may pull off. We'll see.
🧵 60/N
I'm losing momentum on the FilaBilly Humidor. I think it's because I'm doubting that the whole thing will work. Anyway, today I spent a few minutes on it. I drilled the holes, fitted the brackets, and attached the center LED channels. Everything went together exactly as planned/prototyped. It even looks good (to me).
🧵 59/N
🧵 58/N The other end of the channels will also have brackets, but no wiring. The front edge of everything is flush so I can put a line of weatherstrip there.
I'll print these in black. The bright colors are just to make the photos easier to see. I'll tape the wires to the underside of the center shelf.
The BILLY flexes enough that I can bend the shelves apart to insert the channels.
🧵 57/N This assembly will attach the wired ends of the channels to the BILLY's shelf. (The gray plastic piece represents the shelf with a hole drilled through it.) The two cylindrical pieces make a sleeve just big enough to pass a Molex 3 position CLIK-Mate plug through. The U-shaped bracket holds both ends of the sleeve in place and positions the channels both above and below. The wadded paper is to snug the sleeve into the drilled hole.
This is my solution for holding wires securely to the FilaBilly Humidor's center LED channel, demonstrated with short offcuts of the channel and wiring. Those screws are tiny, M1.4 x 8. They compress the wires in place, and I'll solder them down after it's assembled. The other end is just a plug, no wires.
🧵 56/N
blue_ledMy understanding is that all commercial filament dryers are basically just fancy/specialised hot air blowers (so they need air exchange with the outside in order for the filament to dry) and anything that actually extracts humidity (dehumidifier) is industrial grade with corresponding price tag.
Medium to long term I'm planning on trying to replicate the dehumidifier part of @kbob's #FilaBillyHumidor but for that I need to print some parts which in turn requires dry filament. Catch-22.
3/3
Medium to long term I'm planning on trying to replicate the dehumidifier part of @kbob's #FilaBillyHumidor but for that I need to print some parts which in turn requires dry filament. Catch-22.
3/3
Questions, 4 of 3 (Told ya!)
I want to use a piezo knock sensor so I can tap on the glass and turn the lights on without breaking the door seal. Can I mount the piezo anywhere in the cabinet, or does it need to be on the door.
There are 14 millions piezo sensor tutorials on the web, but every one of them starts with "What's an Arduino?" and and ends with the piezo plugged into a breadboard. Nobody explains the mechanical considerations.
🧵 55/N