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DIY PORTABLE WORK STATION
DIY Hot Wire Cutter - Portable Version
Simple Arduino Home Energy Meter
TinyDice: Professional PCBs at home
How to make a Van De Graaff generator
Making Your Mini Laser Engraver Safer And Better
Handcarved Native American Halibut Hook
Yes but he is an engineer. So obviously he can take a pee on anything he wants online..Obviously.
Note that the single relay modules may lack the optocoupler.Personally, even at 5v, I've had problems driving a 4-relay module using a PCF8574. For the RBP I've read that an 74LS244 or 74LS245 buffer IC may help, also with bridging different voltage levels. Just thought I'd mention that.
How to etch aluminum panel labels/designs with a reusable acid mix
Woodworking: Making wood projects without using nails, screws, or glue.
Vintage headphones leather cushions
Switched Mode Dual Variable Power Supply
Kokedama (String Garden)
Easy to Build WIFI 2.4GHz Yagi Antenna
DIY Shelving Unit
Digital Sundial- Ancient Tech in Modern Times