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)

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

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)

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

Homemade benchtop
power supply (built 1987)

The cheapest USB scope I could find (2019)

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)

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

Gochifix 3 in 1 scope meter review (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)

Wooden computer case (2007)

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)

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)

Small signal high noise and dealing with it (2025)

Measuring microns with digital calipers (2025)

Clip leads made with fake wires (2024)

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

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

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

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

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

Inverters don't like power tools (2022)

Amateur iPad screen replacement (2022)

Two inverters in series to make 240 volts (2023)

Transformer core saturation and imbalance (2023)

Let the microwaves be free (2023)

Anemometer calib-ration for low wind speeds (2023)

Hack to ensure glue gun get unplugged (2024)

Some of my older technical hacks

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