Altium CircuitMaker and CircuitStudio

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I have used Altium Designer professionally at work for a long time and it is a great too to use. it has it’s quirks like any tool but it is a very powerful EDA tool and I have design many boards with it. It has always been quite expensive and really just reserved to businesses […]

Electric Imp Based WIFI Power Switch

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My quest for home automation has been slow but I have made some progress. The first thing I wanted to control was some of the lights in my apartment from my phone. WARNING: This project contains mains power which can be dangerous; beaware this project has not passed any safety compliance testing. I hold no […]

WiFi Temperature Sensor Testing Continued

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Continuing from my last post here about my Electric Imp based WiFi temperature sensor. I left my prototype sensor running for 14 days before it stopped transmitting which isn’t nearly the batter life I want out of this but as I said in my last post I was getting anywhere between 800uA and 2mA of current consumption […]

AC and DC Dummy Load

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I wanted a variable load for 24VAC that would go up to at least 12VA. Before I would connected power resistors in series but that gets troublesome when you want to change the load with a fine resolution. There are variable power resistors or rheostats but they are big and clumsy and from what I […]

Wifi Temperature Sensor Testing

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Like I said in my last post I’ve decided to rethink my wireless temperature sensor. Instead of using a local wireless protocol like ZigBee or the Nordic Semiconductor 2.4GHz wireless. I want to investigate using WiFi instead. After doing a bit or research I found the Electric Imp WiFi modules (Electric Imp) look like they […]

Wireless Temperature Sensor Rev 1.0

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Well in the past I had talked about wanting to do a big home automation project and to start with that I wanted to design a battery powered wireless sensor node that I could place around my apartment. The first iteration of this design was posted here http://andrewswanton.com/?p=780 but I had problems with the PIC24 microcontroller I […]

Engineer in Training

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I haven’t posted in a while but thought I would give a quick update recently I received notice from APEGBC that my application was successful and I am now officially an Engineer in Training. This is the start of the next phase in my career where I work towards getting my Professional Engineer (P.Eng) designation. […]