This one is almost too simple, but it might come in handy. It turns out that Pabst fans (and probably several others) already have the circuitry for RPM monitoring. Pop it apart allow pcb access and ...

[Rui] recently put the finishing touches on his homemade CNC mill, which utilizes a dremel-like rotary tool. The problem with using rotary tools for this kind of application is you don’t really have ...

If you are in a plan to build your own speedometer for your next robotic vehicle, ofcourse you need an RPM sensor to complete the task. Today, almost all sensor modules for use with microcontrollers ...

RPM now connects with nearly any device, fits on any bike, and does not require charging. Wahoo Fitness, the leader in iPhone powered cycling, running and fitness, is pleased to announce dual-band ...

So I just bought this nice new switch off Ebay for cheap and it has 4 very loud fans in it. I'd like to replace them with lower noise (and lower flow, I'll take my chances) fans so I can hear myself ...