Raspberry Pi GPIO UART Expansion Board

The design is based on the old Raspberry Pi B Serial Expansion Board. The electronics are updated and several functions are added. Dimensions of the expansion unit: 65 mm x 56.5 mm, standard dimensions of an Raspberry Pi HAT expansion unit
GPIO function expansion:

  • 16 independent GPIO interfaces each with power supply and earthing (3V3 level)
  • 2 independent SPI interfaces
  • I2C interface
  • Standard RS232 interface
  • Infra-red Reciever

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U-Geek Robot Expansion Board for Raspberry Pi

Let your robotic dreams come true with the new DC+Stepper Motor HAT. This Raspberry Pi add-on is perfect for any motion project as it can drive up to 4 DC or 2 Stepper motors with full PWM speed control, It also adds the capability to control 4 Servos with perfect timing.


•    4 H-Bridges:provides 1.2A per bridge (3A peak) with thermal shutdown protection, internal kickback protection diodes. Can run motors on 5VDC to 12VDC.
•    Up to 4 bi-directional DC motors with individual 8-bit speed selection (so, about 0.5% resolution)
•    Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil, interleaved or micro-stepping.
•    Up to 4 Channel 12-bit PWM/Servo(5V)
•    OneInfrared Receiver(GPIO26)
•    Big terminal block connectors to easily hook up wires (18-26AWG) and power
•    Polarity protected 2-pin terminal block and jumper to connect external 5-12VDC power
•    Works best with Raspberry Pi model A+, B+, or Pi 2;Read More

Installing the Keyestudio Raspberry PI GPS Plate

This Keyestudio KS0216 Raspberry Pi GPS Plate (shield) features high performance and low power consumption. It utilizes the NEO-6M Module developed by U-blox. The GPS Module is connected through the 2*20 expansion pins of Raspberry Pi. It features a large size ceramic antenna, sending locating information to GPS through the serial port. It can track up to 8 satellites on 50 channels at high speed, and it produces very accurate location data.

Plug the GPS Plate into Raspberry Pi 3. Upload your code to Raspberry Pi 3, and you can find your exact location within a few meters. It also provides you with very accurate time! It can be used in car navigation, personal positioning, fleet management, navigation and so on.Read More

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