Nanomesher Pi Switch / Attiny Development Board

While working our Raspberry Pi DIY projects, we need a simple on/off switch which can turn on (obviously) and gracefully shutdown the Pi.  Additionally we would also like to operate the switch with a remote control.  After searching on the market, we found that either they are too pricey or lacking the simplicity and feature that we need.

So we decided to build our own.

Using as a Raspberry Pi Switch

Having an on board removable attiny85 mcu, the switch is both Smart and Hackable! Out of the box, the Pi Switch has the following features:

• Single button on/off or Infrared remote operation
• LED light to indicate power status
  • Blinks twice when Switch receives power
  • Turn On when Pi is on
  • Blinks when waiting for PI to turn off
  • Turn Off when Pi is off
• Use standard microUSB and USB female socket

Here's the operation sequence:

1. Press once to turn On

2. Press again to trigger shutdown of the Pi's Linus OS.  The script is supplied.

3.  Switch will monitor the Pi and wait for the Pi to be fully shutdown (halt state)

4. Once halt state is detected, cut the power to the Pi.

Using as a Attiny85 Arduino Development Board