RPi Expansion Boards

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Contents

Back to the Hub.


Hardware & Peripherals:

Hardware and Hardware History.

Low-level Peripherals and Expansion Boards.

Screens, Cases and Other Peripherals.


Introduction

On the Raspberry Pi, there are several connections which can be used for expansion:

  • The Rpi GPIO (General Purpose Input/Output) pins are exposed, that means that expansion boards are able to talk directly to the CPU.
  • The DSI connector will allow low-level interfacing with LCDs and other displays.
  • The CSI connector will allow camera modules to be added in future.

Current expansion boards

Protect & leds

Buffer Board

Buffer Board How to make a Pi Buffer on Veroboard. Each of the 14 outputs can drive up to 500mA using a Darlington array.

FREE GPIO protect (5 V compatible) + 3 button & leds

EASY GPIO is an GPIO expansion board.(GPIO are protected by diode.)

LedBorg

LedBorg is an ultra bright RGB LED add on board for your Raspberry Pi. Capable of 27 colour combinations and controllable from either a GUI or the command line, it can also perform patterns. Small board which connects directly to the GPIO header.

Robotics/ motors

AFLEX Robotic Board

AFLEX Robotic Board is dual motor control and data acquisition board with I2C and Serial interfaces. The board provides 2 motor control drivers with max current up to 3.5A, 8-bits data port with each pin setup as digital input /output or analog input, 10-bits ADC with up to 5 analog channels, 4 inputs for the sensor connections, infrared (IR) remote control. The board provides direct connection to Raspberry Pi.

PiBorg

PiBorg is a Robotics add on board which adds the ability to control motors - from small to large (including DC motors, Stepper motors, BLDC motors and Solenoids) from your Raspberry Pi. It supports feedback via Encoders and Potentiometers, allowing closed loop (servo) control of motors to set positions, velocities and accelerations and it is capable of monitoring drive current and voltages. The loop is PID based and as PiBorg is an Open Source project, you may change the code as you please. It has the ability to drive 10A motors and more, so you'll never be left underpowered with this board!

PicoBorg

PicoBorg is an inexpensive add on board for controlling robotics such as small motors, fans, solenoids, LEDs and the like from the Raspberry Pi GPIO pins. It consists of 4 low side drivers and 4 diodes, and is hardware selectable for either using the Pi PWM output or only GPIO pins.

Arduino

Arduino Shield and Raspberry Pi

a little board with Arduino socket and Raspberry Pi socket you can power the boards with 12Volt or 5Volt http://www.progetti-hw-sw.it/raspberry.htm

aLaMode

“À la mode” is an Arduino clone specifically designed to interface with the Raspberry Pi. You can of course connect a standard Arduino to a Pi USB port using a cord, but when you want a turnkey solution, how about an Arduino compatible “plate” (shield) that fits right on top of the Raspberry Pi with direct access to GPIO port? The Linux side handles all of the displays, human interfaces, and number crunching. The low power Arduino compatible “à la mode” board handles sensors, servos/motors, and provides a highly accurate real time clock.

Cable

Others

ADC Pi, Delta Sigma Pi and RTC Pi

ADC Pi from AB Electronics UK brings 8 channel 15 bit analogue sampling to the Raspberry Pi platform. A buffered 5V i2c bus and stackable headers make this a useful addition to your Raspberry Pi project. The Delta Sigma Pi is a 18 bit Delta Sigma ADC board with 8 inputs, a buffered 5V i2c bus and stackable headers. The RTC Pi is a Real Time Clock module with a buffered 5V i2c bus and stackable headers. http://www.abelectronics.co.uk/default.aspx (see also: setup tutorial)



Buzzberry Buzz-Board Interface

Buzzberry is an interface board enabling expansion using the Buzz-Board modular system designed primarily for educational use.

CJE/4D RTC

On 2nd January 2012, CJE/4D announced that they have a real-time clock (RTC) expansion board in the works: [1]

GertBoard

main page: RPi Gertboard

This board is a buffer between your Rpi and the real world, use it to flash LEDs on and off, drive motors, run sensors and all that other fun stuff.[1]

GELI 'jelly'(GPIO Experimenter and Lab Interface Board)

Raspberry Geli Board Extends the GPIO and provides I2C, D2A/A2D, DC Motor(L298), RS232, Realtime Clock (DS1307), 1-wire and prototyping area on 150 * 100mmm PCB.

GPIO isolated expansion/RTC

UT Electronics is developing a expansion board containing a fully isolated 16-I/O I2C GPIO expander and RTC, with extensive options for further expansion. C and Python libraries will be available at launch. The board will probably be sold as a kit, with SMT components already in place.

Update: According to their website, the realities of life prevent them from bringing the product to market. They are hoping someone will pick up the ball. They have released the PCB layout and all documentation for free on their website.


Heber x10i

Heber Ltd X10i integrates real time I/O into a RPi control system. A secure real-time controller that permits control over multiple and different types of inputs and outputs, and uses the USB 2.0 communication standard. It is an all in one plug and play board for developing LED drivers, control, sensing of different switches, and driving stepper motors. Exclusive features include a real time clock, battery backed static ram, a Dallas chip (for unique board identification), 2 serial communication ports, a powerful audio amp and a independent dedicated on board processor.

Heber now offers drivers in C/C++ and Linux to make it even easier for programmers, inventors and developers to connect with the outside world using X10i and their Raspberry Pi.

Paper-Duino-Pi

Paper-Duino-Pi is an Arduino shield for the Raspberry Pi. Due to the fact that it is designed as Paper-PCB it is easy to create and one doesn't need a printed circuit board. All components are cheap standard electronic parts. A video is found here.

Pi Crust

picru.st is a very compact and cheap breakout board for your Raspberry Pi that allows easy access to the Pi's pins, grouping them into a logical order and adding clear labeling. Small and simple.

Piface

Piface is simpler than the RPi Gertboard (it's aimed at less experienced users), but also intended to connect to PCs and Android to be platform agnostic

Pi232 RS232 board

Pi232 is an RS232 expansion board that plugs onto GPIO connector.

PiDuino

Youtube video showing prototype board

Pi Plates

Adafruit Industries announced in March 2012 the intention of making expansion boards for the Raspberry Pi under the "Pi Plate" name.[2].

The first board available is a prototyping board that overlays the Raspberry Pi via a long plug-in header. It has screw terminals for all the Pi GPIO lines.

PiPLUS Multifunction I/O Extension Board

PiPLUS Multifunction I/O Extension Board is designed as versatile, general-purpose data acquisition and control module. Key Features: Battery-backed Real Time Clock; 3.5A DC motor driver chip; 8-bits digital I/O Data Port; 10-bits ADC with 4 analog channels; DAC; 4 high power outputs; 4 PWM outputs; IR Remote Control input; 2 user's buttons; AVR ATMEGA328P microcontroller with a preloaded Arduino bootloader and Arduino Shields connectors; 3V - 5V buffers for I2C, SPI and Serial interfaces; Power supply with 5V and 3V regulators.

PiPLUS board also works as a bridge between Raspberry Pi and ARDUINO and provides a direct connection to Arduino Shields. You can use the standard ARDUINO environment and graphical interface for Windows or Linux for software development and ATMEGA328P microcontroller programming.

Pi Tin

Not yet tested, comments welcome Project files for Eagle here: [2] Schematic and Board images: [3] [4] This board uses Microchip 16-pin GPIO expanders driven by SPI to provide up to 256 additional GPIO pins at a very low cost. Optionally, it can supply power for the board and the Raspberry PI.

The board can be made in a stackable manner allowing you to also place additional peripherals on the GPIO connector. It makes non-exclusive use of all four SPI pins as well as exclusive use of the CE0 Pin.

If you install (and power) the power supply components, the board will supply up to 1A at 5VDC. This is not enough to power all GPIO pins on a fully populated board, but in most applications should be sufficient to power the RPI and a reasonable number of GPIOs. An external power supply should be used for higher-power applications. This board should never be powered from the RPI as even one of the chips can draw more than the RPI can provide.

The power supply is quite flexible and will accept anything from 8-25VAC or 8-42VDC. It is based on a Recom module which provides a switching power supply in a form factor that is a drop-in replacement for 7805 series TO-220 linear regulators.

The 8 chips can be had for about $4@ or less and the power supply components total about $15. A fully populated board is about $49+PCB, $31+PCB for 64 GPIO pins.

You can have the PCB made at a variety of fabricators. [5] does very nice work and is hobbyist friendly at very reasonable prices.

Pi-Wire

Pi-Wire Homelabs are developing options for connection of a 1-wire bus to the RaspberryPi. Boards include SPI breakout connections for future boards.

Ponte

PONTE initial post An arduino shield bridge from Omer and SKPang

Quick2Wire GPIO Expansion Board

Quick2Wire GPIO board and experimenters kit is an extension board for the Raspberry Pi that has level converters to allow the driving of TTL and real world devices such as LED's and switches. It will also provide an experimenters kit, a software framework and a number of tutorials.

Raspberry Pi IO Interface

forum thread showing 'paper mockup'. Another buffered IO expander.

Raspberry Pi to Arduino Shields Connection Bridge

Raspberry Pi to Arduino Shields Connection Bridge allows you to use any of the shields, boards and modules designed for Arduino in Raspberry Pi. It includes also the possibility of connecting digital and analog sensors, using the same pinout of Arduino but with the power and capabilities of Raspberry. Using arduPi library, you will be able to make programs in Raspberry with the same code used in Arduino. To do so, Cooking Hacks Team have implemented conversion functions so that you can control in the same way as in Arduino all the I/O interfaces: i2C, SPI, UART, analog, digital, in Raspberry Pi.

Relay board and Raspberry Pi GPIO

a board with 8 relays and 8 input with a Raspberry Pi socket you can power the boards with 12Volt, the board has a DIN rail container http://www.progetti-hw-sw.it/raspberry.htm

MiniPiio L293D

[6] is a small (50x40mm) add-on board which provides a dual H-Bridge DC-Motor circuit using the venerable L293D chip.

MiniPiio Relay2

[7] is a small (50x40mm) add-on board which provides a two 1A DPCO Relays. Each relay has a set of screw terminals for easy wiring.

MiniPiio DIO16

MiniPiio DIO16 is a small (50x40mm) add-on board which provides an additional 16-channels of Digital Input/Outputs for the RPi. It can use either a MCP23S17 (SPI) or MCP23017 (I2C) Port Expander.

MiniPiio RS232

MiniPiio RS232 is a small (50x40mm) add-on board which provides a basic RS232 to TTL interface for the RPi. It uses a 3.3V MAX3232 to provide the RS232 interface.

MiniPiio ULN2803

MiniPiio ULN2803 is a small(50x40mm) add-on board which connects a ULN2803 Darlington Driver chip to the RPi's GPIO allowing the RPi to control electronic circuits which require more current to drive them.

RPi MIDI Breakout Board

RPi MIDI Breakout Board is a simple MIDI breakout board for the Raspberry Pi using the hardware UART from the RPi's expansion interface

RPi Protoboard SM

RPi Protoboard SM is a simple prototype board for the Raspberry Pi
another link to the same project?

RPi "UserPort"

RPi UserPort is a digital and analogue I/O board for the Raspberry Pi. UserPort replicates the original BBC Micros digital User Port and Analogue Port but uses more modern components such as the MCP23S17 16-ch GPIO and MCP3204 4-ch 12-bit ADC.

rpi_serial

BitWizard has a Raspberrypi serial breakout board. It breaks out four serial buses from the GPIO port.

BitWizard then has a series SPI (or I2C) expansion boards that can be daisy-chained off the SPI (or I2C) buses of the expansion board. A virtually unlimited number of expansion boards can be connected. Expansion boards are available that drive a simple 16x2 text LCD, more general purpose IOs, servos, temperature sensors, relays, optocouplers etc.

RPi RS232 Breakout Board

RPi RS232 Breakout Board is a simple RS232 breakout board for the Raspberry Pi

1-Wire Masters from Sheepwalk Electronics

Sheepwalk Electronics are currently developing a series of expansion boards for the Raspberry Pi to interface your Raspberry Pi to a Dallas/Maxim 1-Wire network. The range includes a simple passive "master" (called the RPI1) to allow easy use of the kernel 1-Wire driver, a single channel I2C master based around the DS2482-100 (called the RPI2) and an 8 channel I2C master based around the DS2482-800 (the RPI3). The RPI1 and RPI2 modules are now available on our website. The RPI3 8 channel master is still under development. The modules are all available as a bare PCB, kit of parts or fully assembled/tested.

Slice of Pi

Slice of Pi Ciseco have produced a convienient small break out board for the Raspberry PI. XBee style connector for XRF / XBee / RN-XV / XBT / RF-BEE etc. Has the SPI and I2C pins on one standard 8 way header and the Raspberry PI's 8 general purpose I/O pins on another for easy access. Comes as a kit of parts that needs to be soldered. Construction is very easy and suitable for children with basic soldering skills.

Slice of PI/O is a variation of the above produced by Ciseco based upon Nathan Chantrell's MCP23017/Slice of Pi "project". The MCP23017 may be powered from either the Pi's 3.3V/5.0V GPIO pins or, with care, an external psu. The use of a 5.0V power source means that the MCP23017's 16 (2 x 8) GPIO's can interface directly with 5V logic families etc. However, the Pi's own GPIO's, also available, will still need 3.3V - 5.0V level shifters. Trevor Gowen's experimental LED BarGraph "board" has been "piggy-backed" onto one of these.

XBee ZB SMT Backpack

The Raspberry Pi XBee ZB SMT Backpack by bootc is a carrier board for Digi XBee ZB SMT modules. These are different to the normal XBee modules because they are surface mount and additionally can interface to a host using SPI as well as serial. The backpack also features 3 LEDs for status signals as well as two FTDI headers (one for the RPi and one for the XBee), as well as being able to host a 'normal' XBee module (though of course you can't use SPI with those).

RPi Servo board

The Raspberry Pi Servo board by adent is a small expansion board for connecting up to eight RC servos and/or an ESC (Electronic Speed Controller) to the RPi. It has a pass through for the GPIO port and it uses the serial line in it for commands. The interface is a simple ASCII-protocol via the serial port. It also has five own GPIO-pins that is not supported by card firmware yet. Firmware is released as GPL. Can power RPi from ESC or external source. Youtube clip of first prototype. Working on an alternate firmware to connect DHT22/11 humidity/temperature sensors to the board instead.

RPi SOFTWARE Servo board

The Raspberry Pi SOFTWARE Servo board by adent is a small expansion board for connecting up to eight RC servos and/or an ESC (Electronic Speed Controller) to the RPi. It has a pass through for the GPIO port. Can power RPi from ESC or external source. It needs a kernel module to work. The card only buffers the GPIO of the RPi and provides convenient connectors. Since there was room on the PCB, the serialport, GND and 3V3 is broken out.

Raspy Juice Exp Board

Raspy Juice by 2-Watt Elements is an experimental board that supplies the Raspberry Pi with +5V through the GPIO header. With its wide input voltage range (6~23V), the buck regulator can be powered by batteries, 12V Adapters, solar, etc. Other features are the RS232 level console port, PCF8523 RTC, and an expansion ATmega168A microcontroller as an I2C slave. This latter MCU has interfaces of an RS485 port, an additional RS232 port, 4 RC-servo ports and unused-pins expansion header. The MCU firmware is updateable through the I2C interface. Hardware details are in http://code.google.com/p/raspy-juice/wiki/1_Hardware_Description

pyMCU

pyMCU is a python controlled microcontroller that works with the Raspberry Pi, connects to the USB port and uses the pyMCU python module and pyserial to control the microcontroller in your python script. You can communicate with i2c, spi, serial, and one wire devices, software configurable pulse in / out functions, has 13 Digital IO Pins, 6 10-bit Analog Pins, 5 10-Bit PWM Pins, blink LEDs, control servos and motors, read various sensors, built-in functions for sound generation: arbitrary frequency generator, misc. sound / tone generator, DTMF generator. PyBootloader - python script for uploading new firmware versions or your own microcontroller code. Check out some of the Tutorials and Examples

RPi CC1101-OneWire-Clock extension

The RPi-COC board from busware.de adds Onewire, a Sub-1 GHz RF Transceiver, RTC and an EEPROM mainly for smart home automation. The Onewire RJ11 port is driven by a DS2482 chip supported by 5V levelshifter and strong pullup. The DS1339-RTC is powered by CR2032 battery or on-board 60mF supercap. The 2Kbit EEPROM (at24c02) is mainly to hold board specific config data. The CC1101 Sub-1 GHz RF Transceiver is controlled by an atmega1284 to pre-process air data. It is connected to RPis UART and contains a avr109-bootloader for firmware updates. The popular culfw-firmware lets you interact with FS20, Homematic, Intertechno or similar actors and sensors - easily using FHEM-home automation server. In addition a secured 5V power socket for external power supplies is provided.

RFM12Pi - Wireless OpenEnergyMonitor Base-station

Add's RFM12B wireless (868/433/912Mhz) RF transceiver capability to the Raspberry Pi. The RFM12pi has got an-board ATtiny84 microcontroller pre-loaded with firmware to decode RFM12B packets from JeeNode and OpenEnergyMonitor sensor modules onto Raspberry Pi's internal serial UART. Designed to be used with emoncms running on a Raspberry Pi web-server to make a low power energy, temperature and other environmental data logging and visualisation server. Developed as part of the openenergymonitor.org project. For more info see introductory blog post, overview documentation page and technical documentation wiki.


MyPiShop

(MyPiShop) Pi 8 LED & 8 Button

Pi 8 LED & 8 Button interface board for Raspberry Pi.

Perfect way to learn how to use the GPIO pins.
Plugs directly into the Raspberry Pi GPIO connector. (P1 header)
Has eight bright green LED's and eight momentary switches.
For a more detailed description see: http://mypishop.com/Pi%208%20LED%20&%208%20Button.html

(MyPiShop) Stepper Motor Controller Board

Pi Stepper Motor Controller interface board for Raspberry Pi.

The stepper board uses 8 GPIO pins to drive up to two stepper motors.
(One stepper motor is included in the kit)
Plugs directly into the Raspberry Pi GPIO connector. (P1 header)
The board can use the 5 VDC provided by the Raspberry Pi or you can optionally provide your own source voltage to drive the motors.
This board includes a ULN2803 8 Channel Darlington Driver and can be used to control other higher current devices such as relay boards, etc.
For a more detailed description see: http://mypishop.com/Stepper.html

(MyPiShop) Read Your Pi !(LCD Interface Board)

Read Your Pi (LCD) interface board for Raspberry Pi.

Available kits with 20x4 LCD display or 16x2 LCD display. The interface board uses the GPIO pins display characters on a LCD display.
Plugs directly into the Raspberry Pi GPIO connector. (P1 header)
For a more detailed description see: http://mypishop.com/Read%20Your%20Pi%20!.html

(MyPiShop) Protect Your Pi ! (16 or 32 IO Expansion Kit)

Protect Your Pi (LCD) interface board for Raspberry Pi.

Available kits with 16 or 32 GPIO expansion pins. The expansion board uses the I2C bus on the Raspberry Pi to provide up to 32 additional GPIO pins.
Plugs directly into the Raspberry Pi GPIO connector. (P1 header)
For a more detailed description see: http://mypishop.com

(MyPiShop) Pi MATRIX ! 8X8 LED Matrix with 16 bit I/O !

Pi MATRIX ! 8X8 LED Matrix with 16 bit I/O kit for the Raspberry Pi.

HUGE 8X8 LED MATRIX
Plugs directly into the Raspberry Pi GPIO connector. (P1 header)
Take the display off and use it for 16 bits of I/O
For a more detailed description see: http://mypishop.com

BerryClip 6 LED Buzzer Board

The BerryClip is a small board providing 6 coloured LEDs, 1 buzzer and 1 switch. It provides an easy and quick introduction to GPIO experimenting. The board plugs directly onto the Raspberry Pi GPIO connector and there are lots of Python example scripts available.
For a more detailed description see: BerryClip on Raspberrypi-spy.co.uk


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Rs-Pi ULN2803 8bit 2 Relay Board + 2 Step Motor Port

Pridopia P-pi serials for Raspberry Pi

  • Rs-Pi ULN2803 2 Relay Board + 2 Step Motor Port

ULN2803 8 Darlington transistor array output size 55mm x 40mm Rs-Pi-2803-2Relay-StepMotor All of our Rs-Pi Products are design and Made in UK


References

  1. http://www.raspberrypi.org/archives/411
  2. http://www.adafruit.com/blog/2012/03/14/adafruit-experimenting-with-pi-plates-for-raspberry_pi-shields-for-the-raspberry-pi/