Bringing up the board
In this section, we will discuss board bring-up. Board bring-up is a process where we verify the functionality of our design in a step-by-step process. It is identical to the steps we discussed earlier to test the Notecard and the SparkFun Qwiic keypad. During the verification process, we found a missing connection in our schematic. We connected it using a piece of wire (as shown in the following figure) and verified its functionality:
Figure 11.16 – Fixing a missing connection using a piece of wire
Now that we have tested our PCB, it is time to revise our design by adding the missing connection to the schematic.
Final assembly and testing
It is time to build our final product. We ordered an old landline phone with a keypad and gutted its internal circuitry. We glued our keypad and placed our PCB inside the phone. Our Pico phone looks like this:
Figure 11.17 – Assembled Pico phone
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