DIY Bike Speedometer(Atmel ATtiny24)

Project Name : Bicycle Speedometer Project by : Min-ju, Lee (Halla university, in Wonju, South Korea) CPU Type : 8bit RISC Microcontroller (AVR) CPU : Atmel社 ATtiny24(Internal 8MHz RC Osc.) RTC : Dallas社 DS1302(using ) IDE Software : AVR Studio (included AVR assembler) LED’s Control : HEF4017(10bit counter), HEF4094(8bit shift register) Internal Battery : Li-polymer 1,400mAh (In Use : 10~12hr, Sleep mode : 100hr~, Chage : 5hr) User control : Tact sw