IanJohnston.com

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Quick news.............

17/07/15 - Great news!.....I've committed to another version of the PCB for my Precision Digital Voltage Source, and have also just received a bunch of new faceplates this time black anodized with white writing. I could be selling these things, hmmm!

Latest Articles.............

Video Blog - Yale Burglar Alarm modifications

Video Blog: Part 1 of the modification of our house burglar alarm, a Yale HSA6400. I'm adding a web interface and mobile phone texting facilities, both home grown by way of Arduino of course!
Date: 29/07/15

Video Blog - Handheld Precision Digital Voltage Source

Video Blog: Part 1 of the design & built of a Handheld Precision Digital Voltage Source. UPDATE: It's finished!....Part 2 now uploaded to YouTube.
Date: 07/06/15

Project - "Hobby 818" lathe refurb

Project: The refurbishment of a sorry looking "Hobby 818" lathe, including the conversion to DC motor drive and dynamic speed control.
Date: 15/03/15

Project - CSI Bench Power Supply CC Setting Upgrade

Project: As recently sold in my online shop I have decide to open the design to the masses. Eagle PCB and BOM files available for download.
Date: 18/01/15

Video Blog - 22" LCD TV Repair

Video Blog: The 22" LCD TV from our bedroom has stopped responding to the remote control so I decided to see if a quick repair could be carried out.
Date: 11/01/15

Video Blog - Philip Harris Mains AC Current Meter Conversion

Video Blog: My Philip Harris Mains AC Current Meter has 2 modes but only 1 LCD, so I decided to modify the panel and incorporate 2 LCDs.
Date: 06/12/14

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