TechEd

Welcome to our area on everything to do with Technology, Education and everything in between. In here you will find a growing list of articles and resources that cover the following areas:

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Last Posts

  • Arduino Hydreon RG-11 Optical Rain Sensor, with Solar Sensor - This is part of the TechEd Section. As mentioned previously, I was on the look out for a suitable Solar sensor to provide measurement of the strength of the Sunlight on our property. Now where the RG-11 is located is actually quite an ideal place for determining Solar light levels, as it has a clear[...]
  • Arduino Hydreon RG-11 Optical Rain Sensor interfacing - This is part of the TechEd Section. My project of tying together various sensors to work out what is happening around the property is taking shape. I just took delivery of the Hydreon RG-11 Optical Rain Sensor a few days ago, cost $99 plus postage from Ocean Controls.  A nifty little unit that makes use[...]
  • Arduino Clones and DHT11 temperature/humidity sensor - This is part of the TechEd section. As previously mentioned, to diversify my techie skills (and its fun), I have a little side home DIY project on the go to achieve the following: Create a RS485 network, to allow me to easily connect together multiple Arduino’s over a distributed network. Gateway said RS485 network onto[...]
  • Arduino, RS485, mixed powers and multiple devices - This is part of the TechEd Section. As mentioned previously  you need to be very careful when using multiple sources of power that are coupled by a common rail – nasty things can happen which will ruin your day (as well let all the critical magic smoke out). Luckily for me my power supplies are able[...]
  • Arduino and multiple power sources – things to watch out for… - This is part of the TechEd section. As I mentioned previously , I had a need to double check that the 5v USB supply from my laptop was floating with respect to my lab power supply. I measured a no load difference on the 0v lines of around 120v – which raised the obvious concern[...]