# I2c display not working
**URL:** https://discourse.nodered.org/t/i2c-display-not-working/45701
**Category:** General
**Created:** [15 May 2021 21:41 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701 "2021-05-15T21:41:03Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@RogierQ](https://discourse.nodered.org/u/RogierQ)
#### Post date: [15 May 2021 21:41 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701/1 "2021-05-15T21:41:03Z")
hey!
i have a Chinese i2c display
[link to display](https://nl.aliexpress.com/item/32896971385.html?spm=a2g0o.productlist.0.0.3be4368bBEqSH7&algo_pvid=0fe0285f-be4c-459c-a597-0c37d7abf289&algo_expid=0fe0285f-be4c-459c-a597-0c37d7abf289-0&btsid=2100bdcf16211145999997914eb390&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_)
when i run `i2cdetect -y 1`
i get
this gives me 3c??
what is my address then? when i enter 3c nr crashes.
What is want to do is display some text on the 128x64 display.
All tips are welcome.
i tried to make it work with node-red-contrib-lcd20x4-i2c and with node-red-contrib-pcf8574-lcd
and i update raspi-config to enable i2c
---
### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [15 May 2021 23:03 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701/2 "2021-05-15T23:03:38Z")
What pi are you using?
Please start up node-red and cause the crash again. Then copy the node-red log from the startup thru the crash and paste it to a reply.
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### Author:  [@RogierQ](https://discourse.nodered.org/u/RogierQ)
#### Post date: [16 May 2021 10:32 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701/3 "2021-05-16T10:32:33Z")
It is a pi 4 model 4
i deleted all that caused the crash allready because it was impossible to start node-red again
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### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [16 May 2021 10:37 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701/4 "2021-05-16T10:37:20Z")
Did you install the nodes via the palette or in the cli?
Interesting there is another thread just opened with an i2c issue but the were using node-red-contribute-oled.
I would suggest installing the node via the cli to make sure it installs and we can go from there
Also what version of NR and node.js?
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### Author:  [@RogierQ](https://discourse.nodered.org/u/RogierQ)
#### Post date: [16 May 2021 11:12 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701/5 "2021-05-16T11:12:10Z")
I will give it another try. Last night i gave it up at 2.45...
Just to be sure, it should be possible to connect a display to node red and show text?
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### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [16 May 2021 11:18 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701/6 "2021-05-16T11:18:35Z")
> [@RogierQ](#):
>
> Just to be sure, it should be possible to connect a display to node red and show text?
Yes it is possible,
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [15 July 2021 11:19 UTC](https://discourse.nodered.org/t/i2c-display-not-working/45701/7 "2021-07-15T11:19:11Z")
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