Collaborate Disseminate
An electronic leadscrew is an increasingly popular project for small and mid-sized lathes. They do away with the need to swap gears in and out to achieve the proper ratio …read more Continue reading Electronic Lead Screws – Not Just for Threading Anymore
When one thinks of the Arduino Uno, one thinks of a capable 8-bit microcontroller platform that nonetheless doesn’t set the world alight with its performance. Unlike more modern parts like …read more Continue reading Running 57 Threads At Once On The Arduino Uno
Once a program has been debugged and works properly, it might be time to start optimizing it. A common way of doing this is a method called profiling – watching a program execute and counting the amount of computing time each step in the program takes. This is all well …read more
Continue reading Where The Work Is Really Done – Casual Profiling
The king of machine tools is the lathe, and if the king has a heart, it’s probably the leadscrew. That’s the bit that allows threading operations, arguably the most important job a lathe can tackle. It’s a simple concept, really – the leadscrew is mechanically linked through gears to the …read more
Continue reading Benchtop Lathe Gets An Electronic Leadscrew Makeover
Getting into the weeds of operating systems is daunting work. Especially when the operating system involved is a fully featured modern PC operating system with millions of lines of code all working together to integrate hardware and software seamlessly. One such operating system “weed” is figuring out how to handle …read more
The ability to execute code in parallel is crucial in a wide variety of scenarios. Concurrent programming is a key asset for web servers, producer/consumer models, batch number-crunching and pretty much any time an application is bottlenecked by a resource.
It’s sadly the case that writing quality concurrent code can be a real headache, but this article aims to demonstrate how easy it is to get started writing threaded programs in Python. Due to the large number of modules available in the standard library which are there to help out with this kind of thing, it’s often the case that …read more
Continue reading Thread Carefully: An Introduction To Concurrent Python
It’s the suburbanista’s weekend nightmare: you’re almost done with the weekly chores, taking the last few passes with the lawn mower, when you hear a pop and bang. The cylinder head on your mower just blew, and you’re out of commission. Or are you? You’ve got a 3D printer – couldn’t it save the day?
If this bench test of plastic cylinder heads is any indication, it’s possible – just as long as you’ve only got 40 seconds of mowing left to do. [Project Farm] has been running all sorts of tests on different materials as field-expedient cylinder heads for …read more
Continue reading Results of 3D-Printed Cylinder Head Testing Fail to Surprise
The planned threading in shared memory update gives bad actors a way around the timer mitigations released by browser vendors. Continue reading WebAssembly Changes Could Ruin Meltdown and Spectre Browser Patches
Finding threading bugs is hard. Clang thread sanitizer makes it easier. The thread sanitizer instruments the to-be-tested code and emits useful information about actions that look suspicious (most importantly data races). This is a great aid in develop… Continue reading The clang thread sanitizer
Wood can be the material of choice for many kinds of projects, but it often falls out of the running in favor of metal or plastic if it needs to take a threaded fastener. But with a little ingenuity you can make your own wood taps and cut threads that will perform great.
Making wood do things that wood isn’t supposed to do is [Matthias Wandel]’s thing. Hackers the world over know and use his wood gears designer to lay out gears for all kinds of projects from musical marble machines to a wooden Antikythera mechanism. Woodworkers have been threading …read more
