Today in my travels I happened upon SPIDriver and I2CDriver by Excamera Labs.
SPIDriver and I2CDriver
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Zener diodes for temperature critical applications
“In a 5.6 V diode, the two effects occur together, and their temperature coefficients nearly cancel each other out, thus the 5.6 V diode is useful in temperature-critical applications.” — Zener diode.
The two effects referred to are the Zener effect and the Avalanche breakdown.
Transformerless Power Supplies
This is a very interesting read: Transformerless Power Supplies: Resistive and Capacitive. I was referred to it by @mariush over on the EEVblog forum.
Case fans
Got some extra case fans for one of my towers. Found PC Airflow Guide: How to Set Up and Position Your Fans and How to tell which way your fan is blowing.
Xbox 1.0 GPU 40mm Fan adapter
This guy made a fan adapter for the Original Original Xbox (1.0): Xbox 1.0 GPU 40mm Fan adapter.
Using LEDs as mains indicator lights on 120V and 230V
Watched a video about how to implement a mains indicator: Using LEDs as mains indicator lights on 120V and 230V (live demos).
SMART error on disk used with ZFS and mdadm
So I joined superuser.com to ask a question: SMART error on disk used with ZFS and mdadm.
Power-on indicator
I’m embarrassed to report that I don’t know how to solve the problem of providing a power-on indicator on my Xbox test power supply, so I asked.
DC-580 buck-boost power supply with CH340N IC
Universal Magnetic Car Phone Holder
I found these cool magnets: Universal Magnetic Car Phone Holder Dashboard Hands-Free Mobile GPS Mount Stand. I didn’t buy any, but I might!
And speaking of magnetic material I should get, these look cool too: A4 Magnet Sheets Black Magnetic Mats for Refrigerator Photo and Picture Cutting Die Craft Magnets Magnetic on One Side 0.5mm.