This PIC16F688 is a 14-pin Flash-based 8-bit microcontroller with EEPROM, 8 channels of 10-bit A/D, comparator and Enhanced USART (EUSART) peripheral.

1x11 IO Port is used to extend the 2x6 IO port to 1x11 IO pins for the breadboard and iBoard Tiny series connection.

This 24LC256 is a 32K x 8 (256 Kbit), I2C Erasable PROM, and operate at voltage range (2.5V to 5.5V).

AP1117E50G-13 is a 5V low dropout positive regulator with 1A output current at 6.4V to 18V input supply.