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Nootropic Design EZ-Expander Shield


Photo: Nootropic Design

Shield URL: EZ-Expander Shield
Tags: output, digital
Maker: Nootropic Design

The EZ-Expander is an Arduino shield that makes it easy and inexpensive to add digital output pins to your Arduino. This is accomplished by utilizing two 74HC595 shift registers. There are 16 new output pins on the shield (numbered 20-35), and the shield itself uses 3 existing Arduino pins to operate (pins D8, D12, and D13) so overall you get 13 additional output pins to use.

The new digital pins 20-35 can only be used for output, not input. They cannot source or sink as much current as normal Arduino pins. An Arduino pin can source/sink 40mA, but the outputs the EZ-Expander shield can only source/sink 6mA.

All other Arduino pins are brought up to the top of the shield for easy access. Since pins 8 (latch), 12 (clock), and 13 (data) are used by the shield, they are not available for use and are marked with an 'X' on the silkscreen.

Open Source: Yes, OSHW-compliant
License: CC BY-SA 3.0 US
Source: www.nootropicdesign.com/ez-expander/d...

AREF
GND
D13 / SCK
D12 / MISO
RESET D11 / MOSI ~
3.3V D10 / SS ~
5V D9 ~
GND D8
GND
VIN D7
D6 ~
A0D5 ~
A1D4
A2D3 ~
A3D2
A4D1 / TX
A5D0 / RX

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