Quantity   Component name
1 × Atmega 328p CPU
1 × MPU6050 Gyroscope for cadence. Using DMP currently which consumes a lot of power.
1 × nRF24AP2 ANT+ communication
1 × M24C64 EEPROM for storing e.g. calibration data in crank-part of power meter.
1 × HX711 ADC for strain gages. This one is really low-cost. We will see how it does its job when e.g. temperature changes.