2 articles were written in December 2013:

In the last article I ended with the question whether to move on on the PSoC4 and add some features, or to move over to the PSoC5 before doing so. Since I would need a DAC for the next stepping (adding a comparator with variable trigger level), I took a deeper look at the PSoC4 data sheet.

It comes with two DACs, but since they are current output DACs, I would need an external resistor. Since the LCD shield doesn’t leave me with a way of adding components on top of the Pioneer kit, I decided to move the project over to the PSoC5 (which has two voltage output DACs).