node-red-contrib-sm-rtd 1.0.3
A Node-RED node to control Sequent Microsystems RTD Data Acquisition Card
This is the node-red node to control Sequent Microsystems RTD Data Acquisition Stackable Card for Raspberry Pi.
Install
Clone or update the repository, follow the instrutions fron the first page.
In your node-red user directory, tipicaly ~/.node-red,
~$ cd ~/.node-red
Run the fallowing command:
~/.node-red$ npm install ~/rtd-rpi/node-red-contrib-sm-rtd
In order to see the node in the palette and use-it you need to restart node-red. If you run node-red as a service:
~$ node-red-stop
~$ node-red-start
Usage
After install and restart the node-red you will see on the node palete, under Sequent Microsystems category one new node:
rtd node
This node reads one rtd sensor input channel.
The card stack level and channel number can be set in the node dialog box or dynamically through msg.stack and msg.channel.
The read is triggered by the message input and output can be found in the output message payload as a number representing the temperature readings in degree Clsius.
Important note
This node is using the I2C-bus package from @fivdi, you can visit his work on github here. The inspiration for this node came from @nielsnl68 work with node-red-contrib-i2c.Thank both for the great job.
