With the finished design I could proceed with cutting of the boards to correct dimensions.
After deciding to build a bartop arcade cabinet I had the option to buy a prebuilt kit or create everything from scratch. I have chosen for the latter as I though that it would give me more freedom in design and in the end more satisfaction.
When you don't have a garage or a barn where you can saw and paint you are forced to be creative in creating an isolated area for that purpose. I have made such an place and would like to share it so maybe you will find it useful.
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.
There is something about blinking leds. Numerous projects are created with the 555 timer chip. To continue the tradition I will describe in detail the creation of a 555 astable timer board that was designed in the previous blog post.
KiCad is a great schematic and PCB design tool. It is easy to learn and fun to use, above all it is free. In this blog post we are going to design a simple circuit based on the 555-timer chip in astable mode.
After the dry film is applied to the copper layer, it can be etched. There is an option to use ferric chloride (FeCl3), but it can not be reutilised and needs to be disposed.
Being able to make your own printed circuits boards is a skill that can come in handy. There are several ways to do this and I will describe the one that I use. First part of the process is the creation of a layer on top of the copper that prevents the solvent to dissolve it.
During the process of manufacturing of home-brew PCBs you need to expose the photosensitive film with ultraviolet light. A cheap and low power solution can be found in UV led strips.
If you can not afford a real NIXIE tube watch, there is an alternative. It is this 4-digit 7-segment LED watch kit. It costs less than 10 euros and you can find it on most Chinese reseller websites. It comes as a kit and you will need to do a bit of soldering and assembling.