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+--- Thread: [SOLVED] activate LED1/2 with Node-RED + fieldbus nodes container (/thread-353.html)
[SOLVED] activate LED1/2 with Node-RED + fieldbus nodes container - Christian_Rau - January-4th-2019
I'm using netPI RTE with the hilschernetpi/netpi-nodered-fieldbus container installed. Now I want to activate the LED 1 an 2 (GPIO12, GPIO 13).
I try a flow with output-node Raspberry rpi gpio. But it didn`t work, below the node the message N/A is shown. Sending an e-mail using the same trigger works.
Is it even possible to access the LED with Node-Red?
RE: activate LED1/2 with Node-RED + fieldbus nodes container - Armin@netPI - January-4th-2019
Well Christian, you should follow the following post:
https://forum.hilscher.com/thread-159.html
This explains why the standard Raspberry GPIO Node-RED node can't be used. The LEDs are no general purpose IO devices but LED devices.
Since the GPIO node is based on the rpi-gpio node.js module https://github.com/JamesBarwell/rpi-gpio.js/blob/master/rpi-gpio.js you see in there the PATH information set to /sys/class/gpio which cannot be used for the LEDs.
My recommendation is to write your own Node-RED node ... which is probably no more than 10 lines of code.
RE: activate LED1/2 with Node-RED + fieldbus nodes container - Armin@netPI - January-4th-2019
One thing in addition. You need to enable privileged mode for your container in any case. Else the /sys/class/ ... instances are not available in a container.
RE: activate LED1/2 with Node-RED + fieldbus nodes container - Christian_Rau - January-8th-2019
Thank you for your response. Unfortunately, I can not do anything with it. I understand the explanation, but creating my own node exceeds my knowledge. If you would like to give me further information, I would be grateful.
I still have a thousand more questions, but I will open new threads soon.
PS: google-Translate is wonderful
RE: activate LED1/2 with Node-RED + fieldbus nodes container - Armin@netPI - January-8th-2019
Christian I have decided to make a Node-RED LED node public within a Docker image in the next days.
I feel that an LED Node-RED example node will help the netPI community in general supporting netPI Node-RED applications better.
I will keep you informed when I have released the example.
RE: activate LED1/2 with Node-RED + fieldbus nodes container - Armin@netPI - January-11th-2019
Hello Christian,
we have made the container with Node-RED and user LED node now public to everyone on DockerHub here https://cloud.docker.com/u/hilschernetpi/repository/docker/hilschernetpi/netpi-nodered-user-leds
This is how it looks like
Have fun with it.
RE: [SOLVED] activate LED1/2 with Node-RED + fieldbus nodes container - Armin@netPI - October-21st-2019
We put all Node-RED nodes we ever made for netPI and distributed in multple containers into one single container now. https://cloud.docker.com/u/hilschernetpi/repository/docker/hilschernetpi/netpi-nodered. This container and its Node-RED does include the user LED node too.