For every computer error, there are two human errors, and one of them is blaming the computer. Whenever a human blames a computer for something, there are two tools, and one of them is the computer.

Not all of your nifty tools need to be fancy robots, CNC machines, or nifty Robertson screwdrivers; a computer is equally capable of being a fantastic tool, provided it has the right software. For this week's Hacklet, we're going through some of the best software tools on hackaday.io.

[Alan] was inspired to build a software tool for making sewing patterns. Sewing patterns are usually designed for the 'average' person, but if you're making custom wearables, you should end up with a piece of clothing that fits perfectly.

The first project [Alan] is using this tool for is a fleece cap that fits the contour of his head. He captured a 3D mesh of his head, imported the mesh into Blender, and unwrapped the resulting mesh. The two halves of the hat were then plotted with a Silhouette Cameo, cut out of fleece, and sewn together. The result is a beanie that fits perfectly around [Alan]'s head. It's an extremely cool and novel application of 3D modeling, and if you ever need to wrap a 3D object with a 2D material, this is the project you want to check out.

And you thought the autorouter in Eagle was bad.

[Anderson] built a tool called Pyrite that will take a schematic and build a layout in three-dimensional space. He calls them Volumetric Circuits, and it's basically the point-to-point wiring found in old radios and amplifiers taken to the next level. We featured this project before, and there haven't been many updates since then. Maybe giving [Anderson]'s project a few skulls will help motivate him to get back to the project.

Not satisfied with the existing free and open source CAM programs, [Snegovick] started work on his own.

[Snegovick] calls his project BCAM, and it's exactly what you need to mill holes in PCBs, cut gears with a CNC router, engrave plastic, and anything else a 2.5 axis CNC machine can do. The project is written in Python, and yes, the source is available. Supported operations include drilling, path following, offset path following, and pocketing.

Write enough microcontroller projects, and you'll eventually come up with your own library of common code that does one thing and one thing well. If you're smart, you'll reuse that code in future projects. [ericwazhung] is cutting through the hard part of developing all this code and released some things that are useful in a whole lot of projects.

Included in the commonCode library are the usual 'heartbeat LED', non-blocking input, a standard interface for AVR timers, bitmaps of text characters, DC motor control, and a whole bunch more. Extremely useful in any event.

That's it for this round of the Hacklet, bringing you the best hackaday.io has to offer.