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History

Dave Conway-Jones 81c532fdce update hardware nodes info style		2016-03-02 13:27:52 +00:00
..
LICENSE	Add PiSRF node - reads SRF05 (or 04) Ultrasonic range module	2015-11-01 14:59:21 +00:00
nrsrf	Add PiSRF node - reads SRF05 (or 04) Ultrasonic range module	2015-11-01 14:59:21 +00:00
nrsrf.py	Add PiSRF node - reads SRF05 (or 04) Ultrasonic range module	2015-11-01 14:59:21 +00:00
package.json	update hardware nodes info style	2016-03-02 13:27:52 +00:00
pisrf.html	update hardware nodes info style	2016-03-02 13:27:52 +00:00
pisrf.js	Add PiSRF node - reads SRF05 (or 04) Ultrasonic range module	2015-11-01 14:59:21 +00:00
README.md	update hardware nodes info style	2016-03-02 13:27:52 +00:00

node-red-node-pisrf

A Node-RED node for Raspberry Pi to read range from an SRF05 Ultrasonic range sensor.

Only works with a Raspberry Pi.

Install

Run the following command in your Node-RED user directory - typically ~/.node-red

npm install node-red-node-pisrf

Raspberry Pi input from an SRF04 or SRF05 ultrasonic range finder.

The configuration requires two GPIO pin numbers, the trigger pin and the echo pin. These can be any spare valid Pi GPIO pins. e.g.

    7,11

Outputs a msg.payload with a number representing the range in cm.

Produces one measure every 0.5s - but only if the distance is different from the previous reading.

Note: we are using the actual physical pin numbers on connector P1 as they are easier to locate.