Opto-pi: Raspberry Pi Opto-Isolator Board

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I have just backed this project on Kickstarter, and feel that if you are a Raspberry Pi owners looking to use higher voltages with your mini PC, then you might be interested in this new opto-isolator board called the Opto-pi which has been specifically designed to be used with the awesome Raspberry Pi mini PC.

Opto-pi connected to Raspberry Pi

The Raspberry Pi Opto-pi board has been created to make interfacing with the 8 digital GPIO pins on the Raspberry Pi much easier. Allowing you to connect higher current devices as well as higher voltages directly to Opto-pi board itself when needed with ease.

Opto-pi Raspberry Pi Opto-Isolator Board

The Opto-pi has been created by Glabster and was created due to the owners issues he encountered adding higher loads to his Raspberry Pi, as he explains:

“I found myself creating circuits to interface the Raspberry Pi to higher current loads and higher voltages.  I wanted a simple, flexible, and quick way to connect the Raspberry Pi to motors, relay coils, high power LED’s and more.  So, opto-pi was created. Opto-pi plugs directly into the 26-pin header on the Raspberry Pi, making installation quick and your projects neater.

With Opto-pi, there is not an electrical connection between the Raspberry Pi and connected loads (motors, relay coils, etc.) or input signals.  Opto-pi uses light to isolate the 8 digital GPIO pins.  These GPIO pins are protected from high current and high voltage (up to 24VDC) since there is no electrical connection to these pins.”

Features of the Opto-pi opto-isolator board for the Raspberry Pi include :

  • Plug Opto-pi into the 26-pin header on the Raspberry Pi.
  • Apply power to the Power Input pins.
  • Attach loads (motors, relay coils, LED’s, etc.) to the Output pins.
  • Attach input signals to the Input pins.
  • Configure corresponding GPIO pins as inputs or outputs in your script.
  • Operates on up to 24VDC
  • Four optically isolated open collector outputs (Controlled by GPIO pins 11, 12, 13, and 15)
  • Four optically isolated inputs (24VDC max) (Controlled by GPIO pins 7, 16, 18, and 22)
  • Up to 500mA max output on a single output channel
  • Up to 200mA max output per output channel with all four channels simultaneously conducting
  • Input channel current: 15mA @ 24VDC, 2.5mA @ 5VDC
  • Built in flyback diodes at outputs to allow use of inductive loads
  • 2.54mm header pins interface
  • Plugs directly into the 26-pin header on the Raspberry Pi
  • 26-pin headers are extra tall and stackable
  • GPIO Disconnect switches

The Opto-pi project is currently on the Kickstarter crowd funding website, looking to raise enough pledges to make the jump from concept to production. So if you think Opto-pi is something you could benefit from, visit the Kickstarter website now to make a pledge and help Opto-pi, the Opto-Isolator Board for the Raspberry Pi become a reality.

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