If you read Japanese, you might have seen the book “Design and Implementation of Microkernels” by [Nu Tian Sheng]. An appendix covers how to write your own operating system for …read more (https://hackaday.com/2025/01/09/writing-a-risc-v-os-from-scratch/)

Retrotechtacular: Soldering the Tek Way
https://hackaday.com/2025/01/09/retrotechtacular-soldering-the-tek-way/

For a lot of us, soldering just seems to come naturally. But if we’re being honest, none of us was born with a soldering iron in our hand — ouch! …read more (https://hackaday.com/2025/01/09/retrotechtacular-soldering-the-tek-way/)

Toner Transfer, but Not for PCBs
https://hackaday.com/2025/01/09/toner-transfer-but-not-for-pcbs/

It is old news that you can print PCB artwork on glossy paper and use a clothes iron to transfer the toner to a copper board, which will resist etchant. …read more (https://hackaday.com/2025/01/09/toner-transfer-but-not-for-pcbs/)

Sheet Metal Forming With 3D Printed Dies
https://hackaday.com/2025/01/09/sheet-metal-forming-with-3d-printed-dies/

Sheet metal is very easy to form, including the pressing in of intricate shapes with dies and a hydraulic press, but the dies themselves are slightly harder to come by. …read more (https://hackaday.com/2025/01/09/sheet-metal-forming-with-3d-printed-dies/)

Engineering Lessons from the Super-Kamiokande Neutrino Observatory Failure
https://hackaday.com/2025/01/09/engineering-lessons-from-the-super-kamiokande-neutrino-observatory-failure/

Every engineer is going to have a bad day, but only an unlucky few will have a day so bad that it registers on a seismometer. We’ve always had a …read more (https://hackaday.com/2025/01/09/engineering-lessons-from-the-super-kamiokande-neutrino-observatory-failure/)

It’s IP, Over TOSLINK!
https://hackaday.com/2025/01/09/its-ip-over-toslink/

At the recent 38C3 conference in Germany, someone gave a talk about sending TOSLINK digital audio over fiber optic networks rather than the very low-end short distance fibre you’ll find …read more (https://hackaday.com/2025/01/09/its-ip-over-toslink/)

A Low Effort, Low Energy Doorbell
https://hackaday.com/2025/01/10/a-low-effort-low-energy-doorbell/

Bluetooth is a good way to connect devices that are near each other. However, it can drain batteries which is one reason Bluetooth Low Energy — BLE — exists. [Drmph] …read more (https://hackaday.com/2025/01/10/a-low-effort-low-energy-doorbell/)

RISC-V Microcontroller Lights Up Synth with LED Level Meter
https://hackaday.com/2025/01/10/risc-v-microcontroller-lights-up-synth-with-led-level-meter/