# About Design Raspberry and Node-red

**URL:** <https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782>\
**Category:** General\
**Created:** [13 June 2018 08:53 UTC](https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782 "2018-06-13T08:53:17Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![wtrk](https://avatars.discourse-cdn.com/v4/letter/w/97f17d/32.png) [@wtrk](https://discourse.nodered.org/u/wtrk)\
**Post date:** [13 June 2018 08:53 UTC](https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782/1 "2018-06-13T08:53:17Z")

</div>

I have a project with Arduino.

I just control temperature and some PLC inputs. If one of PLC connections pin status low, everthing is ok and we see a message in explorer **" Everything is Fine "** but if connection pin gets High we see a message “There is a problem” like this.

But I want to recreate this project with Raspberry PI 3 and node red… I can create temperature sensors node but, how can I create GPIO pins like alarm active or everything is ok.

Thanks for your helps

---

<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [13 June 2018 09:15 UTC](https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782/2 "2018-06-13T09:15:07Z")

</div>

You can use the gpio nodes to read and write to the pins. They should have been automatically installed when you installed node-red (assuming you used the instructions from [https://nodered.org/docs/hardware/raspberrypi](https://nodered.org/docs/hardware/raspberrypi))

---

<div class="post-metadata">

**Author:** ![wtrk](https://avatars.discourse-cdn.com/v4/letter/w/97f17d/32.png) [@wtrk](https://discourse.nodered.org/u/wtrk)\
**Post date:** [13 June 2018 10:14 UTC](https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782/3 "2018-06-13T10:14:28Z")

</div>

Any example you know or see somewhere or you have how do this ?

---

<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [13 June 2018 10:30 UTC](https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782/4 "2018-06-13T10:30:15Z")

</div>

> [@wtrk](#):
>
> Any example you know or see somewhere or you have how do this ?

You just put a gpio node on the flow, configure it and connect it up. What don't you know how to do?