Contents - Raspberry PI Community Projects

Pi232 RS232 board
Pi232 (http://www.logicethos.com/Blog/
2012-06-21:_Pi232_Raspberry_Pi_RS232_boards) is an RS232 expansion board that
plugs onto GPIO connector.
PiDuino
Youtube video (http://www.youtube.com/watch?v=u5c1Dfaf57g) showing prototype
board
Pi Plates
Adafruit Industries (http://www.adafruit.com) 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 (http://adafruit.com/products/801) that
overlays the Raspberry Pi via a long plug-in header. It has screw terminals for all the Pi
GPIO lines.
Pi Tin
Not yet tested, comments welcome Project files for Eagle here: [2]
(http://www.delong.com/Raspbery%20PI/) Schematic and Board images: [3]
(http://elinux.org/File:PiTin_Schematic.png) [4] (http://elinux.org/
File:PiTin_Boardpng.png) 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.