I’ve recently been working on a Schwinn s500 electric scooter that I’ve upgraded to LiPo power, on the stock controller and motor.  Going forward, I’ll be swapping in a brushless motor and controller, with a projected power output around 4hp.  To that end, I have to figure out a way to convert my existing hall-effect [...]

I’ve been keeping busy on a variety of projects this past week, but none of them are really “finished” yet.  The Autotar (player guitar) is functional and plays a song (Twinkle, Twinkle), but needs some software tweaking to make it sound more like music… Most problematically, the stepper motor that drives the slide is pretty [...]

I went to Lowes last week to pick up a piece of countertop for a project and snapped this photo of how it ended up loaded in my car.  The countertop is 6 feet long and 24″ wide, but I was pretty sure it would fit in my Jetta. Since it was raining when I [...]

A commenter on last week’s electric bike round-up pointed me to this drool-inducing 2008 build from one “Doctorbass,” of Quebec. I am especially impressed by the custom-built battery pack:432 Sony 18650V (known as Konion).used in Makita, Bionx an…

A few years back, I had this great idea that I was going to home-brew an electric two-wheeled vehicle from the ground up.  This turned out to be a somewhat ill-conceived project, but a great learning experience. As far as the finished product, I ended up with a not-terribly-rigid frame that wasn’t particularly straight, and [...]