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node-red-nodes/hardware/PiLiter/README.md

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node-red-node-piliter
=====================
A <a href="http://nodered.org" target="_new">Node-RED</a> node to control a Pimorini Pi-LITEr 8 LED add-on board for a Raspberry-Pi.
Install
-------
Run the following command in the root directory of your Node-RED install
npm install node-red-node-piliter
Pre-reqs
--------
Requires the WiringPi gpio command to be installed in order to work. See the <a href="http://wiringpi.com" target="new">WiringPi site</a> for details on how to do this.
Usage
-----
Raspberry Pi-LITEr output node. The Pi-LITEr must be fitted.
Operates in one of 5 different modes :
- Byte Mode - expects a value between 0 and 255, and each of the LEDs represent 1 bit.
- Meter Mode - expects a value between 0 and 8, the led lit corresponds to the input value - like a meter needle.
- Bar Mode - expects a value between 0 and 8, similar to meter - but all the leds up to the value are turned on - like a mini bar chart.
- All LEDs Mode - expects a 1 or 0 - turns on and off ALL the LEDs
- Object Mode - expects a object specifying the LED and state eg. <code>{led:3,state:0}</code> to set LED3 off.
Requires the WiringPi gpio command in order to work.