1.3 KiB
node-red-node-pibrella
A Node-RED node to control a Pibrella 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-pibrella
Pre-reqs
Requires the WiringPi gpio command to be installed in order to work. See the WiringPi site for details on how to do this.
Usage
A pair of input and output Node-RED nodes for the Raspberry Pi Pibrella from Pimoroni.
###Output
The output node will set the selected output high (on) or low (off) depending on the value passed in. Expects a msg.payload with either a 0 or 1 (or true or false).
The Buzzer is a divider so low numbers are high notes. 0 is off, and the sensible lowest note is around 250-300. 2 is the highest note. 1 is just a buzz - so you can use 0/1 type inputs.
###Input
The input node generates a msg.payload with either a 0 or 1 depending on the state of the input pin.
The msg.topic is set to pibrella/{the pin id} - which will be A, B, C, D or R.
Note: This node currently polls the pin every 250mS. This is not ideal as it loads the cpu.