Joe’s Hobby Electronics

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Author: joe.farr@gmail.com

  • Oscilloscope Kit Repair – Part 1

    Back in the mid 70’s when I’d not long started playing with electronics I stumbled across the advert from the British National Radio & Electronics School. It promised to teach you electronics and as part of the course work you would build a working oscilloscope. My brother had one and he’d used it many time…

  • Issues with some posts 🙁

    So I’m doing battle with WordPress right now as it seems incapable; or I’m incapable of persuading it, to support hierarchical posts. My PSU series of articles is an example. I have one post that is the parent or start of the series, then I have multiple child posts all linked to that parent. This…

  • OXO – Part 2

    When designing a project like this, I like to revert back to my tried and trusted pencil and paper to draw flowcharts and after a couple of iterations I came up with this. Whilst the process depicted above is basically correct, as it stands it’s highlighted some problems. The diagram shows that some branches have…

  • OXO – Part 1

    My original blog post details how I came to start this project and why I chose to see if I could construct this using TTL chips and diodes so I won’t repeat those ramblings here. Instead, let’s get right down to seeing if I can build this or not.  For me, design is an iterative process. I…