Welding
January 11, 2022
Acronyms D/C or DC = direct current = (~180 max typically) = most common. used for welding steel / stainless. A/C or AC = alternating current = optional extra, used for welding aluminium, often has pulsed mode. Duty cycle = percentage of time that a machine will safely operate without overheating, within a certain time […]
The making of a chip
January 1, 2022
“The transistor is arguably the most significant invention of the 20th century. A human hair is about 70 microns. A micron or micrometer (represented as µm) is a unit of measurement equal to one millionth of a meter or one thousandth of a millimeter. 50-micron chip technology requires doping of silicon, creating P-N semi-conducting structures in […]
AoC 2021 Advent of Code (Python)
December 31, 2021
Advent of Code (AoC) is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. Go check it out: Advent of Code Input files: adventofcode2021inputs.zip 2021 Day 25 1 2 3 4 5 6 7 8 9 10 11 […]
Clipsal C2025WE installation template
November 14, 2021
Take a photo from as far away as possible at maximum optical zoom to reduce parallax effect. Make sure camera lens is as vertical over the center of the object as possible. Notice how the walls of the screw terminals holes are not visible as the camera is centered accurately. Make sure the picture is […]
Air compressor
October 27, 2021
Unit conversion 1 inch = 25.4mm 1 bar = 14.5 psi (pounds per square inch) 1 cfm = 38.3 lpm (litres per minute) 1hp = 0.75 kW Air compressor Garnet grit blasting requires a free air delivery (FAD) of 18-22 cubic feet per minute (500-700 litres per minute) of airflow at at least 100 pounds […]
The Freeze-Frame Revolution
October 12, 2021
You monster, I thought. You mass-murdering motherfucker. You liar. You impostor. You helpless machine. You innocent puppet. You false friend. “I hate you,” I said. “I’ll kill you if I can.” “I’ll save you,” it said. “If you let me.” “The Freeze-Frame Revolution” Peter Watts — spoiler alert — Our mind […]
Kinetic art wind spinner
October 1, 2021
Kinetic Wind Spinners from Evergreen Garden Anthony Howe – Di-Octo Ivan Black – Hex Ivan Black – Vane Series (disc square star) Ivan Black – Golden Section George Rickey – Breaking Column The location of the pivots is not critical. The closer to the base, the more counterweight […]
Electrical
September 13, 2021
Disclaimer Always contact a certified electrician for mains powered electrical wiring. Information may contain errors. Information may be incomplete. Information is provided for my own personal education only. No warranty. No guarantees. Earth vs Neutral Ground or (protective) earth in a mains AC power electrical wiring system is a conductor that provides a low-impedance path to the earth […]
