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Mr. Funnybones

on October 31, 2020

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Lightboard

So I’m, really happy about this new board I had made. It uses a Arduino Nano to control PWM signals for six different channels of lights. There are two potentiometers, one to select the effect, and a second to change the speed of that effect. The board uses IRLB8721 mosfets to control current to the lights. According to Adafruit these mosfets are capable of switching 15A of current so each channel could run several lights in parallel. These are the lights I use. They were suggested by another haunter, because they are waterproof, they fit inside a PVC fitting, and draw only 60mA at 12V DC. To find them you can search Eagle Eye LED 18mm on Amazon/EBay/AliExpress. Here’s a 4 minute demo of the board in the lab: There are 4 different effects: 1. Solid - all lights are on and dimmable by the speed potentiometer 2. Firelight - a low flicker meant to evoke the light of a fire. Works well with several amber on the same channel and 1 dim red on another channel 3. Wavey - All channels slowly p

Electrical Connections — WAGO 221

I wanted to share a new method I’m using for making electrical connections in my yard holiday setup. I’ve been looking for something safe, waterproof and ideally modifiable/reusable for when I change my mind/layout. I’m sure that others have discovered these previously, but I am loving the WAGO 221 lever nuts. Works for AWG 12-24, rated for mains mower amps/volts. Apparently more common in Europe for household wiring, but also certified by UL for household wiring in the US. I’m only using them for 12V 5A DC circuits, but it’s nice to know they’ve been well tested. I’m using 18g landscaping “lamp” wire and 35mm film canisters for my junction boxes. Here are a few pictures of my set up. *I have no financial connection with any of this. Just sharing something that works well for me. ** I’ve also tried a similar product that I found on Ali-express. It is much cheaper. But also much lower quality. Perfectly fine for throwing something together, but the wires fit in less well. I’d also nev

Color PVC

PVC is a great material. It's lightweight, relatively cheap, and easily obtainable at your nearest box store. One of the main problems with PVC, though is the color. Most of the big box stores will only cary plumbing PVC in white and electrical conduit PVC in grey. Other colors of "structural" PVC can be ordered, but it's expensive and hard to find. You can also try and paint PVC, but it is messy, and often flakes off. The best solution that I have seen is the technique of "staining" PVC that I first saw here in MAKE magazine. The technique is pretty simple and basically similar to the purple primer we use prior to joining fittings for plumbing PVC. It turns out, Oatey PVC Clear Cleaner can be stained a variety of nice colors with petroleum dyes. These petroleum dyes are commonly used to add color to kerosine for lamps, and for coloring gasoline in industrial applications. The quickest way to get your hands on some is searching ebay for petroleum dye or

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