Car Gear Indicator
The cost-effective Car Gear Indicator is designed around the ATtiny26 microcontroller. The system indicates the selected gear for five-speed manual vehicle gearboxes as well as bicycles. Low power consumption means a 12-V vehicle or bicycle electric system can serve as the power supply.
Link: http://www.circuitcellar.com/avr2004/DA3784.html
The cost-effective Car Gear Indicator is designed around the ATtiny26 microcontroller. The system indicates the selected gear for five-speed manual vehicle gearboxes as well as bicycles. Low power consumption means a 12-V vehicle or bicycle electric system can serve as the power supply.
Link: http://www.circuitcellar.com/avr2004/DA3784.html