The FEZ HAT allows for a Fast and Easy (FEZ) way to connect all kinds of sensors and devices to the Raspberry Pi. The FEZ HAT is compatible with the RPi 2 Model B and the Raspberry Pi 3 Model B. 

he FEZ HAT Key Features:

• On-Board Analog Input and PWM chips.
• Two DC Motor Drivers, suitable for building small robots.
• Terminal Blocks for wiring in DC motors without the need for soldering.
• Two Servo Motor Connections.
• Two Multi Color LEDs, connected to PWM for thousands of colors.
• Single Red LED.
• Temperature Sensor.
• Accelerometer.
• Light Sensor.
• Two user buttons.
• Terminal block with 2x Analog, 2x Digital I/O, 2x PWM and power.
• Female headers with SPI, I2C, 3x Analog, 3x PWM.
• Dedicated power input for driving the servo motors and DC motors. 
• No Soldering required, completely assembled and tested.

Note: When using the servo motors, and only when using the servo motors, the driver will switch the clock frequency to 50Hz. This may cause some flickering on the LEDs when dimmed. Also, the DC motor may jitter. Adding a 470uF capacitor in parallel with the motor will help in the jitter.

Note: This board has been designed as a prototyping add-on for the Raspberry Pi and does not require Linux to load any driver therefore the EEPROM has not been added.  However, we are looking into adding the EEPROM on future revisions.

Warning: There is a possibility that the solder joint for the motor control terminal blocks could create a short by touching the HDMI connector on the Raspberry Pi. To prevent this, simply use a stand-off to support the FEZ HAT and to prevent any contact between the terminal block and the HDMI connector, please see image below.