| The author wanted a very cheap and simple alarm for some of his possessions, such as his electrically assisted bicycle. This alarm is based...
All items tagged with Bicycle and Circuit (4)
| This is a design for a rear bicycle light that automatically switches on and off according to ambient lighting conditions. The red LEDs flas...
| The LED bicycle light that we described in the July/August 2009 edition of Elektor has proved very popular. The author was particularly stru...
| When a battery is charged by a solar panel during the day, it may discharge via that panel after sunset. This may, of course, be prevente...