Author Topic: Hello from DCartier (Canada)  (Read 2536 times)

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Offline dcartier

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Hello from DCartier (Canada)
« on: November 24, 2014, 02:04:05 PM »
Hello Reefpi users.

I am glad to find a community using the Raspberry Pi for controlling a reef tank. I have been using (a very messy) DIY RPI solution for about 1 1/2 years for my own reef tank. I tend towards using breakout boards from to hang peripherals off the Pi using I2C (very similar to the direction you are taking).

Currently my Pi controls:

  • 16 Channels of PWM for LED lights (using ADAfruit PCA9685)
  • 2 5V analog outputs for WP40 pumps (MCP4725 BOBs)
  • 8 water level sensors - 5 in use (MPXV5004G using ADS1115 BOBs)
  • 16 GPIO for 12V relays(mcp23017)
  • ORP sensor (Atlas Scientific)
  • O2 sensor (Atlas Scientific)

I have not had time to read the entire forum yet, so you may already have a solution in mind for water level sensing, but if you do not, the air pressure sensors that I use are quite handy. I have an ATO and daily automatic water change that makes use of them. The sensors are remote and only use a 1/4" tube to connect to the measured vessel.

Here are some photos (excuse the mess):




I also have a variety of Arduino Uno/Mini/Nanos in my system for controlling DIY dosing pumps of various types. I tend to favour stepper based designs (more precise and easier to interface to). For control of steppers I always include GRBL on a Nano or Mini as it does a much smoother job than anything I can do myself.

Here are some photos of my stepper driven auto flushing reactor using GRBL:








I use multiple 4 position LED driver boards along with shielded RJ45 adapters to route my PWM signals to my DIY LEDs that would by much cleaner with your 7 position boards.

I seem to be rambling, and I just wanted to say hi.

Dennis
« Last Edit: November 24, 2014, 02:07:51 PM by dcartier »

Offline Bigguy

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Re: Hello from DCartier (Canada)
« Reply #1 on: November 24, 2014, 03:55:04 PM »
very nice :) and a big hello :)

Offline cio74

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Re: Hello from DCartier (Canada)
« Reply #2 on: November 24, 2014, 10:42:30 PM »
Hello and welcome, looks nice.

Offline promazine

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Re: Hello from DCartier (Canada)
« Reply #3 on: November 26, 2014, 08:05:33 PM »
Welcome aboard!


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Nothing good happens fast in a reef tank......