Tech related articles on woodgears.ca

Closed loop stepper motors -- very impressive (2024)

Industrial servo motor marble catapult (2024)

Servo vs. steppers: Speed, Torque and Accuracy (2025)

What does a PID controller do? (2025)

Magnetic encoder vs stepper motor accuracy (2024)

Linear position with a rotary magnetic encoder (2024)

High-tech automatic Infrared heater aimer (2019)

Stepper mictostepping and controlling from Raspberry Pi (2019)

New computers don't speed up old code (2025)

Efficiency cores are about performance (2025)

Cooling a CPU by just blowing air at it, no heat sink (2025)

Can a PC run faster out in the cold? (2026)

This laptop has no brain (Raspberry Pi laptop) (2024)

Amateur iPad screen replacement (2022)

Wooden computer case (2007)

Solar panning camera build and eclipse shenanigans (2024)

Computer controlled cap shooter aimer (2019)

Squirrel shooter fail (2019)

Ultrasonic distance sensor as oil level gauge (2021)

Anemometer interface for Raspberry Pi (2021)

Anemometer calib-ration for low wind speeds (2023)

Working out optimal fan placement to vent out the house (2021)

Homemade benchtop
power supply (built 1987)

Benchtop supply from buckboost converter, RF emissions (2026)

The cheapest USB scope I could find (2019)

Gochifix 3 in 1 scope meter review (2024)

Rigol DS1202 Z-E oscilloscope review (2023)

Fnirsi-1014D vs Rigol DS1202Z-E (2024)

Hanmatek DOS1104: Good budget scope but frustrating at times

Fnirsi DPOS350P scope review (2025)

How do they cram a gigabit through a cable / MHO98 scope

LRC-ST1: Cool measuring gadget but lousy tweezers (2024)

What's inside a Sonicare toothbrush (2019)

Braun hand mixer speed control fix (2019)

Infrared heater: How warm does it feel (2019)

Wifi antenna
booster dish (2014)

Build a better mouse trap using video surveillance (2015)

Mouse gap squeezer teaser machine (2018)

Eyeballing game (2008)

Computer controlled
box joint jig (2003)

How DC motors and universal motors work (2014)

How induction motors work (2014)

Wet rotor synchronous dishwasher motor (2017)

Figuring out a mystery motor (2019)

Brushless DC motor analysis (2019)

Measure R-values with infrared thermometer (2019)

Dehumidifiers moisture and vapour barriers - experiments (2019)

Does dusting out a fridge reduce power? (2019)

How efficient is a refrigerator heat pump? (2019)

What I have been up to lately (2019)

Drill battery powered LED worklight (2019)

Sturdier "helping hands" for soldering (2025)

Using the second (I2C 0) port on Raspberry Pi (2021)

"> Milling PCBs with my own software (2025)

Inductive current measuring using Raspbery Pi (2021)

Interfacing cheap digital calipers to Raspberry Pi (2025)

Measuring microns with digital calipers (2025)

Small signal high noise and dealing with it (2025)

Connecting SHAHE linear encoder to Raspberry Pi (2025)

Raspberry pi computer camera holder (2015)

My imgcomp motion triggered timelapse software

Raspberry Pi power over ethernet and mount it outside (2018)

Headless Raspberry Pi blink assigned IP address (2020)

Clip leads made with fake wires (2024)

Pi pico therapy timer, C vs. MicroPython (2023)

Hacking a chocolate tempering machine with Pi Pico

Wirelessly Tx 49 mhz toy with I/O line flipping (2024)

Programming Pi Pico in C — Microwave oven monitor (2023)

How badly do you get zapped before you trip a GFI? (2024)

Inverters don't like power tools (2022)

Two inverters in series to make 240 volts (2023)

Our electrical is all wobbly, measuring power is hard (2022)

Transformer core saturation and imbalance (2023)

Let the microwaves be free (2023)

Hack to ensure glue gun get unplugged (2024)

Some of my older technical hacks

To my Woodworking website.