Debounced clock circuit

  • Posted on: 22 April 2017
Debounced clock circuit

The most important part of a computer architecture is a clock circuit. The circuit described here has the option to run freely in a-stable mode and also operate in single step debugging mode. In this post I will describe how to implement this design in KiCad and manufacture a double sided printed circuit board. 

Printing with ABS

  • Posted on: 29 March 2017
Heatbed with ABS

The most important advantages of ABS are impact resistance and toughness. Lego is made from ABS. It will also not deform in hot water, compared to PLA. On the downside ABS is hard to print. You need very hot printbed (around 110 degrees Celsius) and Kapton tape, so the first layer will stick properly. ABS can also warp and curl. There are also other issues in the Marlin firmware that need some attention.

PSU grip

  • Posted on: 8 March 2017
3D printer PSU holder

Power Supply Unit (PSU) for the 3D printer is usually a large block that floats around the desk and is not connected to the printer. It is usually forgotten to integrate into the design. If you are lucky you can find mods on thingiverse, but I had no luck and had to design one myself.