Button SHIM

Description

The SHIM-format boards are designed to slip neatly onto your Pi's GPIO pins and still allow you to use HATs and pHATs at the same time. Or you can solder the included female header onto Button SHIM and use it as a standalone board. The buttons and status LED stick out from the top edge of your Pi, making them easy to access.

Use Button SHIM to add physical interaction and visual feedback to your project. It makes the perfect controller for the LED boards like Unicorn pHAT, Mote, and Blinkt! Or you can use it with Four Letter pHAT to turn your Pi into a proper alarm clock, or stopwatch/timer?

Features

• 5x tactile, right-angle push buttons
• Single RGB LED (APA102)
• Buttons driven through an IO expander (TCA9554A)
• Super-slim SHIM-format board
• 0.8mm thick PCB
• Can be used with HATs and pHATs
• Button SHIM pinout
• Compatible with Raspberry Pi 3, 2, B+, A+, Zero, and Zero W
• Python library
• 2x20 female header included
• Board dimensions: 65x13x4.5mm (WxHxD, depth includes buttons)
• Button dimensions: 7x3.5x3.75 (WxHxD)
• Requires soldering

Because this board is used with an IO expander to read the button states and drive the LED, you'll still have full access to all of your Pi's pins, assuming the I2C address (0x3f) doesn't clash.

Software

There is an one-line-installer to install the Button SHIM Python library. You'll be up-and-running in a jiffy! There are even a few nice example programs showing how to use Button SHIM to control your Pi's audio, how to control the status LED, and how to mimic key presses.

To install the software, open a terminal and type curl https://get.pimoroni.com/buttonshim | bash to run the one-line-installer.

NOTE!

This software does not support Raspbian Wheezy.

It's important to install Button SHIM the correct way round, with the buttons facing outwards from your Pi, and the buttons on the top (check the photos on this page if you're unsure).

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