# Aquarium Controller - Raspberry PI 4B Node-RED, Atlas-Scientific i2c Devices, NCD i2c Relay Board

**URL:** <https://discourse.nodered.org/t/aquarium-controller-raspberry-pi-4b-node-red-atlas-scientific-i2c-devices-ncd-i2c-relay-board/25839>\
**Category:** Share Your Projects\
**Created:** [30 April 2020 23:37 UTC](https://discourse.nodered.org/t/aquarium-controller-raspberry-pi-4b-node-red-atlas-scientific-i2c-devices-ncd-i2c-relay-board/25839 "2020-04-30T23:37:39Z")\
**Posts on this page:** 1\
**Showing post:** 19

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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:** [3 February 2021 20:09 UTC](https://discourse.nodered.org/t/aquarium-controller-raspberry-pi-4b-node-red-atlas-scientific-i2c-devices-ncd-i2c-relay-board/25839/19 "2021-02-03T20:09:12Z")

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I've been making some progress.. ready to add in the automated water change cycles:

![AllLevelsWorking](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/2/c/2c76ad11bf21bb5403a08ba18113c9d05e65f623.jpeg)

I'm going to try out a new set of nodes that mimic ladder-logic over the weekend .. the RedPLC collection:  
[RedPLC Collection of Nodes](https://discourse.nodered.org/t/announce-new-raspberry-pi-redplc-nodes/40257)

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