Improving Cheap SDR Antennas
[VK3YE] knows there are at least two things wrong with the cheap antennas you get with most SDR dongles. First, they are too short. You’d like to have enough to …read more Continue reading Improving Cheap SDR Antennas
Author Archives: Al Williams
DeWalt Literal Hack Upgrades Battery
There are several important decisions you make in your life: Coke or Pepsi; vi or emacs; PC or Mac. But, lately, you need to pick a battery ecosystem for your …read more Continue reading DeWalt Literal Hack Upgrades Battery
CNC Saves Water Cooling Setup
A classic problem. You have a new CPU and a 15-year old water cooling system. Of course, the bracket doesn’t fit. Time to buy a new cooler? Not if you …read more Continue reading CNC Saves Water Cooling Setup
Interpreters in Scala
You might think of interpreters as only good for writing programs. Many people learned programming on some kind of interpreter — like BASIC — because you get immediate feedback and …read more Continue reading Interpreters in Scala
A Cheap Dipole Antenna from an Extension Cord
Dipoles are a classic builder’s antenna, after all they are usually little more than two pieces of wire and a feedline. But as [Rob] shows us in the video below, …read more Continue reading A Cheap Dipole Antenna from an Extension Cord
You are Doomed to Learn WebAssembly
At first, Web browsers displayed HTML pages. But then people wanted those pages to do something. So we got — among other things — JavaScript. Then people wanted to do …read more Continue reading You are Doomed to Learn WebAssembly
Amazon Drones Don’t Go Far
If you are like us, you’ve wondered what all the hoopla about drones making home deliveries is about. Our battery-operated vehicles carry very little payload and still don’t have a …read more Continue reading Amazon Drones Don’t Go Far
Discount Microfluidics from a $9 Spree at the Dollar Store
Microfluidics — working with tiny volumes of fluids in tiny channels — isn’t something you’d think would be inexpensive. Unless you read [Alexander Bissells’] post on how he created microfluidic …read more Continue reading Discount Microfluidics from a $9 Spree at the Dollar Store
Astronomical Clock Uses Your Spare Clock Motors
We’ll admit we are suckers for clock projects, and the more unusual, the better. We liked the look of [Peter Balch’s] astronomical clock, especially since it was handcrafted and was …read more Continue reading Astronomical Clock Uses Your Spare Clock Motors
3D Printed Copper Rocket Nozzle Costs Under Two Grand
You don’t think of hobby-grade 3D printing as a good method for creating rocket nozzles. But [Mister Highball] managed to create a copper nozzle using a common printer, a kiln, …read more Continue reading 3D Printed Copper Rocket Nozzle Costs Under Two Grand