Bike computer: CPU STM32L151RBT6. MCP73831T as Li-Poly battery charger. nRF24L01+ as data receiver from speed+cadence sensor based on STM8L. BMP180 as barometric altimeter and temperature sensor. Quectel L80 or EB-500 as GPS receiver. 128x64 COG LCD display based on UC1701 controller.