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Robot HATΒΆ

Robot HAT is a multifunctional expansion board that allows Raspberry Pi to be quickly turned into a robot. An MCU is on board to extend the PWM output and ADC input for the Raspberry Pi, as well as a motor driver chip, I2S audio module and mono speaker. As well as the GPIOs that lead out of the Raspberry Pi itself.

It also comes with a Speaker, which can be used to play background music, sound effects and implement TTS functions to make your project more interesting.

Accepts 7-12V PH2.0 5pin power input with 2 battery indicators, 1 charge indicator and 1 power indicator. The board also has a user available LED and a button for you to quickly test some effects.

../_images/O1902V40RobotHAT.png
Power Port
  • 7-12V PH2.0 3pin power input.

  • Powering the Raspberry Pi and Robot HAT at the same time.

Power Switch
  • Turn on/off the power of the robot HAT.

  • When you connect power to the power port, the Raspberry Pi will boot up. However, you will need to switch the power switch to ON to enable Robot HAT.

Type-C USB Port
  • Insert the Type-C cable to charge the battery.

  • At the same time, the charging indicator lights up in red color.

  • When the battery is fully charged, the charging indicator turns off.

  • If the USB cable is still plugged in about 4 hours after it is fully charged, the charging indicator will blink to prompt.

Digital Pin
  • 4-channel digital pins, D0-D3.

ADC Pin
  • 4-channel ADC pins, A0-A3.

PWM Pin
  • 12-channel PWM pins, P0-P11.

Left/Right Motor Port
  • 2-channel XH2.54 motor ports.

  • The left port is connected to GPIO 4 and the right port is connected to GPIO 5.

I2C Pin and I2C Port
  • I2C Pin: P2.54 4-pin interface.

  • I2C Port: SH1.0 4-pin interface, which is compatible with QWIIC and STEMMA QT.

  • These I2C interfaces are connected to the Raspberry Pi’s I2C interface via GPIO2 (SDA) and GPIO3 (SCL).

SPI Pin
  • P2.54 7-pin SPI interface.

UART Pin
  • P2.54 4-pin interface.

RST Button
  • The RST button, when using Ezblock, serves as a button to restart the Ezblock program.

  • If not using Ezblock, the RST button does not have a predefined function and can be fully customized according to your needs.

USR Button
  • The functions of USR Button can be set by your programming. (Pressing down leads to a input β€œ0”; releasing produces a input β€œ1”. )

Battery Indicator
  • Two LEDs light up when the voltage is higher than 7.6V.

  • One LED lights up in the 7.15V to 7.6V range.

  • Below 7.15V, both LEDs turn off.

Speaker and Speaker Port
  • Speaker: This is a 2030 audio chamber speaker.

  • Speaker Port: The Robot HAT is equipped with onboard I2S audio output, along with a 2030 audio chamber speaker, providing a mono sound output.