Author Archives: admin

Decoding an EM4100 Manchester Encoded RFID Tag

Posted on 1 March 2015 by admin

Above is the 64 bit raw Manchester Encoded data stream coming out of the data pin on the MLX90109 decoder of the Mobile terminal board. I have captured it using the Saleae Logic analyser which conveniently has a Manchester decoding … Continue reading →

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Data Collection Terminal End-Game (Putting it all together)

Posted on 16 January 2015 by admin

Getting close to the end game of the mobile data-collection terminal and its here we start to think of how all the different parts are going to fit together as a whole to be useful. As an aid for me … Continue reading →

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Latest Updates

Posted on 15 January 2015 by admin

Mobile Terminal Hardware Revision 8 Is working! The above shot shows a completed PCB with the LCD and the ESP8266 WiFi module mounted on the reverse. As luck would have it the WiFi Module fits perfectly and the antenna is … Continue reading →

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One down, five to go!

Posted on 8 December 2014 by admin

Just Finished the hardware, firmware and documentation for the Wine Technologies Multi-Level-Probe. It was nice to go back to a simpler type of project but the customer wanted it that way so it could be assembled in New Zealand (and, … Continue reading →

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Hardware, so close now!

Posted on 29 November 2014 by admin

After several days of cussing and pulling out hair I have finally figured the problem with the power and wifi. The NCP1421 works OK but cannot handle the sudden load of 250mA+ put on it by the ESP8266 wifi quick … Continue reading →

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Movember Update

Posted on 28 November 2014 by admin

Shaving This weekend – Thank god!

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Never enough serial ports

Posted on 21 November 2014 by admin

UARTS are great. Almost all peripherals have the option to communicate using a simple serial protocol. For my latest project a weighbridge HMI interface I needed 2 serial ports but wanted to use a low end PIC18 in order to … Continue reading →

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Back to the grindstone

Posted on 4 November 2014 by admin

Finally managed to get a whole day back on the project after almost 2 months, almost seems 1 step back and two steps forward as: Changing the layout of the barcode scanner so it hits the window at an angle … Continue reading →

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October Update

Posted on 19 October 2014 by admin

My visit to the UK was quite awesome and it was really good to catch up with all my old friends and work colleagues again and see how everything has changed, hopefully even convinced a couple to make the journey … Continue reading →

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PIC32 Low power operation

Posted on 1 September 2014 by admin

Looking at the forums, quite a few people seem to have problems with getting the PIC32 to operate at low power, many including me have spent hours wondering why when I issue a PowerSaveIdle() or PowerSaveSleep() command the device is … Continue reading →

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