In this post, I modify my 5th generation NUC to support 10Gbe fiber networking: Purpose A popular trend in homelabs is power efficiency. While some people are still buying every power-hungry used R710 they can find on eBay, others are going the opposite route, trying to maximize performance per watt. In my opinion, there’s no …
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RAIN: Redundant Arrays of (In)expensive NUCs
Break from the usual electronics project posts and time to discuss some server management. I’ve always had a server. Even in 1986 I had a server. We called it a “BBS” back then, but it was still a server. Throughout the years, the server has evolved, from Lantastic ARCNET to 10base2 coaxial Ethernet, to Gigabit …
Read MoreDIY Wireless Temp/Humid/Pressure sensors with Raspberry Pi Receiver, for monitoring stored 3D printer Filament
In this post, I made some wireless sensors, using BME280 temperature, humidity, and pressure sensors, together with SYN115 transmitter modules. I used these to verify the storage of vacuum sealed “PrintDry” 3D filament storage containers. Purpose I bought some PrintDry vacuum sealed containers on Amazon. These are high-end containers, costing about $20 each. Yes, that …
Read MoreRaspberry Pi 4: Do you need a fan? What’s the best fan for a raspberry pi 4?
In this video I spend some time thinking about the temperature of the new raspberry pi 4, and whether it needs a fan. Idle Temperature I installed rpi-monitor and also watched the cpu temperature using console tools. In the case that I used, I found the pi 4 at idle to be running at about …
Read MoreVacuum Fluorescent Display (VFD) on a Prusa I3 Mk3 Printer
In this video, I replace my printer’s LCD with a Noritake VFD: Purpose Because VFDs look cool. What else is there to say? This is going to be a relatively short blog post because the project was so simple. You can either desolder the existing LCD and solder the Noritake VFD in its place, or …
Read MoreThe Nixie Tube Filadometer – A Nixie Tube Filament Meter for your 3D Printer
In this video, I make a Nixie Tube Filament Meter / Progress Meter: History I’ve made a lot of Nixie Tube projects over the years. This particular one started out as an Ethernet-based thermometer/hygrometer display. It used a Raspberry Pi Model B (the original one!) to interface to some ethernet-based sensors that I had. I …
Read MoreCOB LED Panels: 10 watt, 70 watt, and 200 watt.
In this video, I play around with some COB LED Panels: Purpose Looking into adding some workshop lighting, I evaluated three kinds of COB LED Panels. This is the first part in a series on COB LED lighting. Once I’ve identified the properties of the panels and figured out how much current I can safely …
Read MoreResistive 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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