DIY Projects

Speed controller circuit for radio controlled boats…

Speed controller circuit for radio controlled boats…

Modelboat“This application note describes a circuit designed to control the speed of a dc motor used in radio-controlled boats. The electronic speed controller (ESC) is a “no-brake, forward-only” controller. I wanted to keep the part count low and the circuit simple so a couple features were sacrificed. The circuit does not have: over-current protection, over-temp protection, polarity protection, or over/under voltage protection. All the parts can be obtained from digikey distributors. The circuit was designed with a popular 12-cell model boat motor in mind (graupner speed 700). This project was my first attempt at using Bascom-avr and Atmel microcontrollers. ” Thanks JasonR! Link.

DIY Traffic calming…

DIY Traffic calming…

RoadwitchesInteresting tactic, people were driving too fast in a neighborhood, so the neighborhood built “roadwitches” – “These type of “DIY traffic-calming happenings” are described by their creator as “roadwitches” and have included an 11-feet high rabbit, a big bed (for a sleeping policeman), a Casualty-style fake crash scene for Halloween and the setting up of a living room in the middle of the road.” Link.

DIY Jerry Can Shoulder Bags

DIY Jerry Can Shoulder Bags

77859880 A017Fd270F ORick writes “After reading a post in MakeZine about Kanita shoulder bags, I was inspired to make three shoulder bags from 4.7 liter jerry cans for Christmas presents this year. The Kanita bags sell for a whopping $128.89, which works out to CDN$123 or US$105!! Granted if I took my labour into account, I would have to charge about that much too. But, as a DIY project, it works out to less than CDN$10 to make each of these.” Link.