# Using node-red-contrib-i2c to display text on LCD RGB from Seeed

**URL:** <https://discourse.nodered.org/t/using-node-red-contrib-i2c-to-display-text-on-lcd-rgb-from-seeed/537>\
**Category:** General\
**Created:** [2 June 2018 00:11 UTC](https://discourse.nodered.org/t/using-node-red-contrib-i2c-to-display-text-on-lcd-rgb-from-seeed/537 "2018-06-02T00:11:13Z")\
**Posts on this page:** 1\
**Showing post:** 5

<div class="post-metadata">

**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [3 June 2018 09:14 UTC](https://discourse.nodered.org/t/using-node-red-contrib-i2c-to-display-text-on-lcd-rgb-from-seeed/537/5 "2018-06-03T09:14:45Z")

</div>

I had a play with an I2C device and got it to respond.  
Maybe my little effort might help you out

> [@how i use "node-red-contrib-i2c 0.5.2"](https://discourse.nodered.org/t/how-i-use-node-red-contrib-i2c-0-5-2/393/2):
>
> Hi I installed that node and then thought same as you - how on earth do we use it! But I’ve been a bit lucky and managed to get it to send and receive some info from an i2C board (its a PiRoCon robot controller board that has an Arduino wired to the Pi via I2C which has a lot of info on the i2c commands) So I found out the board had an address of 34 using the scan node And then by looking at exisiting software for the board, I found out that to set up an input I had to send a command byte (1…

(But you need full documentation on the device to see what sequences it needs - its not going to be easy)

---

_[View the full topic](https://discourse.nodered.org/t/using-node-red-contrib-i2c-to-display-text-on-lcd-rgb-from-seeed/537)._