Electronics repairs & projects, test gear, practical demos & software dev.I buy faulty gear, fix it, and share what I learn. Your support helps me keep going. YouTube · Odysee · X (Twitter) · My Github · Contact Got faulty test gear you don’t want—or going cheap? Contact me and I’ll give it a second life and make a YouTube video of the repair. |
I post on X (@IanSJohnston) almost daily—follow for what I’m up to. |
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Latest Articles.... |
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Video Blog 166 - Electronics Related CalculatorsLots of work to my website lately, including updating a lot of the electronics related calculators on my website.Date: 03/11/25 |
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Project 030 - Adding a VPN Server to PfsenseHow to add a OpenVPN server to Pfsense.Date: 15/10/25 |
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Project 029 - Adding a 4G Router as a Failover Internet ConnectionHow to add a 4G router as a backup to your main internet connection via Pfsense.Date: 09/10/25 |
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Video Blog 165 - Windows Web & Email Server MaintenanceBuilding a new spare server, configuring the Lenovo M920q PC and restoring an image to both drive C: & D:Date: 26/09/25 |
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Project 028 - Kelvin Probe Adapter for HP 4338A/BReplacement for the rather bulky Agilent 16143B mating cableDate: 13/09/25 |
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Video Blog 164 - Fluke 73 Multimeter 10min RepairThis Fluke 73 was passed to me with a possible fault. Turns out it was a quick repair!Date: 12/09/25 |
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Video Blog 163 - Select CM-504 Capacitance Meter RepairA cheap capacitance meter isn't working so I analyse the schematic diagram which helps to make the repair.Date: 05/09/25 |
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Project 021 - Home Built Bench Power SupplyOld project re-published - I built an Arduino powered switch mode PSU for funDate: 05/12/15 |
