Resistive Load, Constant-Current Power Supplies, and a 3D Printed Desk Lamp

In this video, I build a 3D Printed Desk lamp. The basic design came from Thingiverse, but I repurposed my LM2576 Constant-Current design to serve as a dimmer. Motivation It all started when I found an interesting lamp on thingiverse, https://www.thingiverse.com/thing:3328807, which used used 75mm air hose segments from another model, https://www.thingiverse.com/thing:3283786/, to make a …

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Raspberry pi based indoor air quality monitor

In this video, I build an indoor (and outdoor?) air quality monitor: Motivation For years I’ve followed the “uRadMonitor”, a device that does air quality monitoring and radiation monitoring. I’ve played with geiger counter projects before and frankly found them to be not very interesting. However, the idea of monitoring air quality is something that …

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Yet Another Masterplay Clone

The Masterplay was originally a device that allowed Atari 2600 digital joysticks to be used with the Atari 5200. In this post, I describe a masterplay clone that I created. Purpose / Introduction The analog controllers for the Atari 5200 are (in)famous for their poor feel and performance. The analog stick, while a really good …

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Homemade Atari 5200 Analog Controller

I built my own 5200 controller: Purpose There’s several different options you can use for an Atari 5200 controller: The stock controller. It’s non-concentering joystick, mushy fire buttons, and general reliability issues make it kinda suck. The masterplay clone. There are various adapters for using digital joysticks, like the common Atari 2600 stick, on the …

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