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

Questions, 3 of 3 (for now).

I want to drive an LCD panel (not pictured). The one I bought uses SPI. If I want to run animations, it needs ~40 MHz. Is it possible to run SPI at that speed through a one meter wire, or should I put another MCU on the back of the display and run USB to it?

I'm leaning toward another MCU.

Thanks.

54/N

Questions, 2 of 3.

What's the best way to attach a wire to a LED strip? When I just solder them on, they eventually break off. Could I make a small PCB and bond the strip to that? Should I print some kind of clamp/strain relief thing to hold the wire end in place? If I do the PCB, I'll throw some capacitance on.

I have about 2 cm between the end of the strip and the end of the channel.

Thanks.

53/N

Questions, 1 of 3.

I'm planning to wire the six LED channels in parallel, driven from six GPIOs.

I am looking for a good way to connect the wires to the controller board in back. For other recent projects I used JST SL, but I don't want to use them again. They're too big, too hard to unlatch, and not wire-to-board. Maybe Molex CLIK-Mate? Other suggestions? I don't want to buy a crimping tool...

Each LED strip will use 2.25 amps max.

Thanks.

52/N

@3dprinting Here are my current thoughts about the Filabilly Humidor's wiring harness. Description in the alt text.

I have questions; see the next few posts.

(Tagging some known LED mavens because you folks have experience. @jasoncoon @wizard @geekmomprojects)

51/N

Ich soll ausrichten, daß ist ein völlig v******* Scheinwerfer, den hat ein absoluter V***** konstruiert und nur noch größere W******** würden so was kaufen.

(Tja, nun)

Und nun ist er zwar fest, der Scheinwerfer, aber um 15 Grad gedreht, da stimmt das natürlich mit dem v******* Fern- und dem k****** Abblendlicht nicht.

V******** S*****.

Aber morgen, da nimmt er die Bohrmaschine, und dann wird das passend gebohrt, das ***** ******.

Da kann es sich mal umsehen!

(Himmel, eigentlich ist der Mann hier der ruhende Pol im Haus....)

#Motorrad
#LED

@3dprinting Then I started thinking about how to route the wires and what connectors and where to locate the MCU and which door sensors to use and it's just too much to figure out today.

I've got a long list of features I want to put into this cabinet. Lighting, fan, temperature/humidity, door sensors, knock sensor, an LCD display, and the dehumidifier. Maybe I should figure out a way to add features incrementally. But they're all interdependent.

50/N

@3dprinting The plan is to have this aluminum channel running up the center of the FilaBilly Humidor. It will provide a surface for the door to seal against (I hope) and also hold an LED strip to light up the interior.

I got this far in modeling and printing the clip that holds the LEDs in. (cont'd)

49/N

@rl_dane @tripplehelix

KDE with Touch displays is smooth right? It should be fantastic when you view it from an IPS LED monitor