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agponic-MD — features defined February 4, 2014

Posted by rik94566 in 1-wire, agponic MD, agponicMD, agponics.com, aquaponic automation, aquaponics, aquaponics electronics, DIY aquaponics, DS18B20, indoor aquaponics, indoor growing, Internet-of-Farming, IoT aquaponics, One-wire, PRODUCTS, Stainless Steel Temp Probe, Temperature Probe.
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Now that the basic agponic-MD unit is completed – I am working through all the different features that can be found on the unit and define there functions.

Here is one side of the connection box at the back of the unit.

pH - power side

Connector Box on agponic-MD February 2, 2014

Posted by rik94566 in 1-wire, agponic MD, agponicMD, agponics.com, aquaponic automation, aquaponics, aquaponics electronics, arduino, DIY aquaponics, DS18B20, Float Sensor, Float Switch, indoor aquaponics, Internet-of-Farming, IoT aquaponics, One-wire, Rj45 connector, Slide Switch, Stainless Steel Temp Probe, SUGRU.
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A big part of the aquaponic simulator is the fact that it uses standard RJ-45 jacks to interface with Arduino’s or a Raspberry PI.  Having this type setup helps keep all the wires and connectors that are required for the unit to operate in a consistent manor safe and out of possible interaction with water elements.

Here is what is needed to construct this sub-assembly:

box MD

When all the above parts come together the finished product looks like this:

Plate - RJ45

TOWER INTERFACE PLATE — protects the dry core of the tower base September 25, 2013

Posted by rik94566 in agponics.com, aquaponics, DIY aquaponics, DS18B20, Hacks, Interface Plate, One-wire, Sensor Hub, Tower System.
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Here is the “INTERFACE PLATE” —  this plate is inserted into the base of the towers and is sealed.  With this interface plate in place wires can be run to tower sensors and power supplied to the pumps that feed the towers.  Without these interface plates it would be dangerous to provide power to pumps or connect or disconnect the tower columns.

Interface Plate

DS18B20 – Terry King — Thank you July 12, 2013

Posted by rik94566 in 1-wire, aquaponics electronics, DIY aquaponics, DS18B20, One-wire, Stainless Steel Temp Probe.
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Well thanks to Terry King and his comment – that he has DS18B20’s working fine with arduino IDE 1.0X.  I double downed my efforts to get 1.0.2 arduino IDE working.  I un-installed all versions – dumped all the libraries and started from a clean system again.  Loaded everything up and got all the new  libraries.  EVERYTHING WORKED FINE!  Thank you Terry!


DS18B20 – always a new twist June 10, 2013

Posted by rik94566 in 1-wire, aquaponics electronics, DIY aquaponics, DS18B20, IoT aquaponics, One-wire, Stainless Steel Temp Probe, Temperature Probe.
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I have resisted moving to Arduino IDE 1.0.x as I have read that people have had problems moving to it.

In my case I have been using ver 21 IDE because it was stable and all the libraries worked with it.  Now that I am moving to the IoT platform I am required to use Arduino IDE 1.0.x.

First step was to download and install.  Then needed to re-establish all the libraries required to work with DS18B20.  Once all done it was time to determine if it all would work correctly.

To start off I ran the one-wire finder sketch.  Much to my delight it worked.  Now I was very confident that this transition was going to go smoothly.   I now connected up 3 sensors and loaded my 3 sensor sketch.

Here was my result:

DS18B20 - 1.0.x

I got reading that were incorrect or really no readings at all

Next I had to make sure the hardware was connected right.  So I went back to my ver. 21 IDE and re-tested everything.  Sure enough everything worked great.

The results now is that using the Hacktronics sketch that was stated to be workable with Arduino IDE 1.0.x does not work with my set-up.  Now I will have to determine just what the problem is and how to correct it.

This will have to be my next task in learning about the DS18B20 and Arduino.

DS18B20 – ground connectors now complete August 15, 2012

Posted by rik94566 in 1-wire, DS18B20, One-wire, Sensor Hub, Stainless Steel Temp Probe.
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Ground connectors completed and tested

I am getting closer to getting 20 probes ready to test.  Everything is just about in place to make a run at it.  So stay tuned we are getting close now…….

DS18B20 — new probe set established August 13, 2012

Posted by rik94566 in 1-wire, aquaponic automation, aquaponics, DIY aquaponics, DS18B20, HEX code.
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Next step in getting to determine if I can get 20 probes to configure correctly,  is to determine the HEX code for each probe.  Being that I had 10 left to pull of the HEX I got to work on this task.  Here are the results.

P022 — 0x28, 0x67, 0x22, 0x47, 0x03, 0x00, 0x00, 0xA1

P023 — 0x28, 0xAC, 0x30, 0x47, 0x03, 0x00, 0x00, 0x39

P024 — 0x28, 0x4A, 0x18, 0x47, 0x03, 0x00, 0x00, 0x64

P025 — 0x28, 0x1A, 0x3A, 0x47, 0x03, 0x00, 0x00, 0x31

P026 — 0x28, 0x66, 0xC1, 0x7A, 0x03, 0x00, 0x00, 0xD7

P027 — 0x28, 0xA2, 0x51, 0x47, 0x03, 0x00, 0x00, 0xF6

P028 — 0x28, 0xB5, 0x1F, 0x47, 0x03, 0x00, 0x00, 0x63

P029 — 0x28, 0x9B, 0xC0, 0x7A, 0x03, 0x00, 0x00, 0x22

P030 — 0x28, 0xBE, 0xB6, 0x7A, 0x03, 0x00, 0x00, 0x8E

P031 — 0x28, 0x20, 0x15, 0x47, 0x03, 0x00, 0x00, 0x84

Now I have the HEX code I need to enter all the information into my INDEX of probes so I can track each probe and where I have them located in my systems.  Helpful to know if I move them around in the future.  I had been using the procuct “MANYMOON” for tracking, but have since switched over to “EVERNOTE”.  This has proved to be a better platform for me as I can manage larger amount of information on a large amount of projects.  Evernote also allows me to have access to my information on any device I am using.  Great Stuff.

Here is what my index now looks like:

Probe Set Index

DS18B20 — 4.7K connectors completed August 9, 2012

Posted by rik94566 in 1-wire, aquaponic automation, DS18B20, Stainless Steel Temp Probe.
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4 – completed connectors and fully tested

The next step to achieving running 20 probes was to complete the 4.7K resistor harness set-up.  I now have this done and can move on to the finishing off the ground connector that will allow pull all this together.

HARNESS TESTING — very important — DS18B20 April 20, 2012

Posted by rik94566 in 1-wire, aquaponic automation, DS18B20, One-wire, sensor, Stainless Steel Temp Probe, Temperature Probe.
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use your multimeter

Now that I have constructed an addition harness I need to make sure it works.  Two (2) tests needs to be performed.  Conductivity and ohm confirmation of the resistor value through the connections.


This test will let me know that all my connections are correctly connected and signal is flowing through the wires and working the way I configured them.  If not,  I will need to correct the problem and retest until the connections are working correctly.

Here is a video of the testing I did:


ohm Value Testing:

This is important with DS18B20 probes.  It is important because the DS18B20 IC’s  are sensitive when it comes to resistor values and there  tolerance levels.  I bought some very cheap 4.7K ohm resistors and did not know the tolerance level.  Hooked everything up and the probe did not work.  I had to trouble shoot all the connections and everything was working – then I swapped out a resistor that I knew worked and had specs on and bingo everything was working.  I have no problems using resistors with a 5% tolerance rating.  They will give you some swings in value readings, but the DS18B20’s will work very well it you stay in this tolerance range.

Here is a video of how I tested for ohm’s:


Now on to building another harness and test it all

DS18B20 — external power supply — Next Step April 11, 2012

Posted by rik94566 in 1-wire, aquaponic automation, arduino, DIY aquaponics, DS18B20, One-wire, Temperature Probe.
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Now that I know that 5 probes work using a 4.7K ohm resistor and external power, I need to determine next steps in this process.  Looking at the fact that I have over 20 probes to work with and have come so far in understanding how DS18B20 work.  My choice is very simple I think.  Keep going and determine how many probes I can get working and/or determine the breaking point at which probes don’t work.  This would take some major effort on my part as I need to prep all the probes and build the harnesses to support this many probes.  The good news is that the direction I am going requires the use of 5 wire harnesses, so I can use the harnesses in my other projects, so this is not wasted effort.  Bad news is that if I find that 4.7K ohm resistor will not support the high number of probes then I will want to test and determine the breaking point on the next lower resistor level which is the 2.2K ohm resistor.  This would require a large amount of work on my part.   This keeps going for me because I have found no confirmed information about any of these levels or if they work in the real world.  Being that no real work has been found I have the opportunity to establish some new information on DS18B20’s that will help others and be lasting resource on the internet well into the future.  I really am ready to finish this subject off and move on to other automation projects that have importance in my aquaponic quest.  So now I need to double my efforts to finish this off and move on.