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About wpgcat

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    Aquarium Monitoring with Raspberry Pi, Linux
  1. GaryD, that is very cool, I am intriuged by the SCIO Spectroscope! craig1267, the sensors connect to the Raspberry Pi GPIO pins, I had to solder about 6 wires and 2 resistors into a proto typing board. Other sensors I had found (but out of my budet) were Dissolved Oxygen, Continiuty (solids in water) and ORP all available for Atlas Scientific. All of the sensors available from Atlas Scientific would be able to be interfaced with nagios quite easily.
  2. I have one more component to add to the system yet. I had purchased a Raspberry Pi Camera - No IR version which has the IR filter removed from the camera sensor. The Pi NoIR Cam also came with a neat extra called Infragram, which is a blue pieice of film that goes over the lens. From the Inframgram website.. What is Infragram?An "infrablue" image is one in which the "red" channel of the image shows "near-infrared" light instead of the usual red. Such images can be generated using many inexpensive digital cameras and webcams by removing the infrared block filter and then adding a filter that selectively blocks red light Our technique uses a modified digital camera to capture near-infrared and blue light in the same image, but in different color channels. We then post-process the image to attempt to infer how much it is photosynthesizing. This allows us to better understand and quantify how much of the available light plants are metabolizing into sugar via photosynthesis. Images that are taken with the camera and ran thru the tool located on the http://infragram.org/ website come out showing Reds Oranges and yellows where photosynthesis is taking place. I was thinking it would be neat to have the camera take a few images a day or at some set interval and see a neat time lapse of the plants growing.
  3. wpgcat

    20 Gallon Indoor Aquaponics

    Monitored by Raspberry Pi and Nagios PH Water Temp Humidity and Room Temp
  4. I have completed my first Aquaponics system, consisting of a 20 Gallon tank, Flood & Drain growbed as well as Raspberry Pi which has several sensors attached (PH Sensor / Water Temperature Sensor / Humidity / Room Temperature) The Raspberry Pi connects all the sensors and I am running some IT Infrastrucutre monitoring software called Nagios which polls the sensors every 3 minutes and creates a nice looking graph Tank 20 Gallon Tank,Lighting T5 Florecent Hood with 4 HO 6500K Bulbs that are 2 Feet long Grow bed 26 Liter Clear plastic Tote Started from seedling;Green Onion, Green Pepper Basil purchased from the produce department at a grocery store and re-plantedGreen Onion Aloe Vera plants which were starting to die in my window sill, so I have replanted them. Sensors The tank is monitored by Nagios, There are 4 sensors attached to a Raspberry Pi Running check_mk, Nagios querys the sensors every 3 minutes. Sensors are; Atlas-Scientific PH Sensor & PH Circuit DS18B20 (1-Wire Water Temperature sensor) DHT22 (Humidity and Room Temperature sensor Here is some recent images from April 30 2014 of the growbed.
  5. I really like the looks of your setup! Do you know how/or have any information on purchasing or building similar white grow containers as seen in your system? I have a very small space indoors and currently using one small tote grow bed (Flood and Drain) but I would like to expand it with some small NFT beds.
  6. Hello! In the next month I am going to be setting up a small scale aquaponics system in my apartment. I already have a 20 Gallon tank and am looking to setup a tote sitting on top of the tank with a Flood/Drain via a Bell Siphon. Something similar to this. I am aiming to build a clean looking system (Wife insists it cannot be ugly) I am a system administrator and very interested in adding some automation with sensors/ graphing the output every minute for – Temperature, PH and possibly another sensor. Atlas Scientific is likely where I will be purchasing the sensors, I had looked into this quite some time ago but did not comit to the build. I am not sure what type of sensor to go with for my 3rd sensor. Options are ORP Sensor, Dissolved Oxygen or Conductivity . Would anyone have a recommendation for a sensor out of ORP, Dissolved Oxygen or conductivity that would have a relation to the amount of nitrates in the tank? I had read that a Conductivity Sensor has a direct relationship with Nitrates in the tank and could possibly give a indication of nitrate levels in the water, Or would I be better off with ORP or Dissolved O2? I am very experienced with RRDtool and that is what I will be using to generate the graphs. Infact I am already monitoring the ambient temperature of my apartment with a USB Temperature Sensor, RRDtool and Nagios. Sample house temperature Graph - 1 Year Sample house temperature Graph - 25 Hours
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