The IC with the built-in countdown timer monitors GPIO of Raspberry Pi, and the software on Raspberry Pi sends pulse signals to GPIO at a fixed interval to re-set the timer in the IC.

Rapiro is a cute, affordable, easy to assemble, humanoid robot kit. Comes with 12 servos and servo control board (Arduino compatible). Designed to work with Raspberry Pi and its camera module. Small body with dynamic actions. You'll get unlimited possibilities with Rapiro by putting your ideas into programming.

This product is on sale now.

The IC with the built-in countdown timer monitors GPIO of Raspberry Pi, and the software on Raspberry Pi sends pulse signals to GPIO at a fixed interval to re-set the timer in the IC.

These are the stand-offs and screw sets for Raspberry Pi. You can secure the HAT with your Raspberry Pi.

T-Cobbler breakout kit for Raspberry Pi B+

2×13 GPIO Ribbon Cable for Raspberry Pi

This is L-shaped Pin Socket, and can be fit to a GPIO of Raspberry Pi.

16-port I/O expander for Raspberry Pi. MCP23017 by Microchip is mounted on the expander.

This is a universal board which can connect GPIO pins of Raspberry Pi directly,
and it comes with L-shaped Pin Socket 2x13 (26P).

This is a T-cobbler breakout board kit designed for extending the GPIO, Serial, SPI and I2C interface on Raspberry Pi A/B to breadboard.

You can connect this I2C controlled 8×2 LCD Breakout to GPIO of Raspberry Pi directly and use it without soldering!

2×20 GPIO Ribbon Cable for Raspberry Pi

The DAC is a high performance DA converter for the Raspberry Pi model B+ and A+

This 5 V PoE adapter board powers your Raspberry Pi Model B+ over Ethernet (output voltage: 5 V). As the GPIO can supply 5 V, you don't need USB cable for powering.