2022.07.09: Linear slide bearing from scraps
2022-07-09 11:04 by Ian
Posting it to give everyone a laugh, and maybe an idea for a large linear bearing.
2022.06.18: Metal casting
2022-06-18 23:47 by Ian
Yes, I will allow the children to pour the 2000-degree liquid metal.
The BuzzBox
2022-06-14 12:13 by Ian
As an object lesson in electricity, my youngest boy and I built a high Wattage transformer box with a trigger. It is named BuzzBox because while operating under full load, it emits that 60Hz buzz that usually means a fire is about to start.
2022.02.22: H-bridge deadband sequencer
2022-02-22 21:35 by Ian
This is a logic-level front-end to an H-bridge that provides deadband enforcement. This particular circuit supports 4-channels; sufficient for two H-bridges.
2021.09.05: LiPo reverse engineering
2021-09-05 08:13 by Ian
I needed a specific kind of battery for a project. And I happened to have one salvaged from a ruined Nexus7 sitting in my "Reverse-Engineering TODO" box that fits the application perfectly. I guess it's time to tear into this battery and put it to good use.
Home VoIP System Part 1: Provisioning the phones
2020-06-13 23:54 by Ian
A HOWTO for preparing the VoIP phones for re-use.
Home VoIP System Part 0: Introduction and materials
2020-06-13 23:50 by Ian
Building a home VoIP intercom/paging/control system.
Viam Sonus 2.0
2019-11-16 14:45 by Ian
This is an improved version of my audio router board.
The Woose Tracker
2019-08-08 10:59 by Ian
This project is a wearable child's toy for team games. I have two children that are young enough to start drawing treasure maps and playing sophisticated games of hide-and-seek. And they both watch cartoons that have characters with wearable computers. So I embarked on a quick project to build something that was meant to be used for fun.
Recent breakout boards
2019-07-28 16:46 by Ian
Last month was busy for hardware. I spent most of the month in KiCAD, and OshPark just shipped the last wave.