# Cannot read I2C Atlas Scientific PH EC sensor

**URL:** <https://discourse.nodered.org/t/cannot-read-i2c-atlas-scientific-ph-ec-sensor/31218>\
**Category:** General\
**Created:** [6 August 2020 11:12 UTC](https://discourse.nodered.org/t/cannot-read-i2c-atlas-scientific-ph-ec-sensor/31218 "2020-08-06T11:12:11Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![SonoraTechnical](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/sonoratechnical/32/20033_2.png) [@SonoraTechnical](https://discourse.nodered.org/u/SonoraTechnical)\
**Post date:** [24 September 2020 16:58 UTC](https://discourse.nodered.org/t/cannot-read-i2c-atlas-scientific-ph-ec-sensor/31218/2 "2020-09-24T16:58:37Z")

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I had this issue. I found a Fix that I describe in an entry that I made in this thread on May 1, 2020.

[https://discourse.nodered.org/t/aquarium-controller-raspberry-pi-4b-node-red-atlas-scientific-i2c-devices-ncd-i2c-relay-board/25839](https://discourse.nodered.org/t/aquarium-controller-raspberry-pi-4b-node-red-atlas-scientific-i2c-devices-ncd-i2c-relay-board/25839)

Scroll down until you see my entry for May 1, 2020.. and I describe using the i2c nodes to read Atlas-Sci EZO circuits.

Unfortunatley, the thread is closed becuase I did not update the information in a timely fashion, but the information is still relevant.

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_[View the full topic](https://discourse.nodered.org/t/cannot-read-i2c-atlas-scientific-ph-ec-sensor/31218)._