Nuts and Volts

■ FIGURE 14. Pasted alarm clock on FrAC breadboard.

■ FIGURE 13. Alarm clock parts copied and ready to paste.

Delete the proto shield and mini breadboard, which will leave you with the components shown in Figure 13.

Now, do a block copy of these components and open the Fritzingduino project. Paste the components on the breadboard as shown in Figure 14. You'll need to delete and/or move some of the wires, then add the CR1220 battery component as shown in Figure 15. Note the following when wiring this design:

• Digital pin 9 is PB1 pin 15 on the ATmega328 IC • SCL is PC5 pin 28

• SDA is PC4 pin 27

You'll get a schematic shown in Figure 16 (of course, you'll need to move the connections around a bit to get this exact image). The resulting breadboard view is shown back in Figure 1. Now you have combined a minimal Arduino clone with an alarm clock design on a single PCB. Plus, you’ve developed some major prototyping skills in the process.

■ FIGURE 15. FrAC on breadboard.

■ FIGURE 16.

FrAC schematic.

GO FORTH AND CHANGE THE WORLD!

Congratulations! You have learned how to use Fritzing with the Arduino to do designs from the prototype stage to production. You can now take that itchy idea that makes you want to scratch your brain and build it on an Arduino proto shield breadboard for preliminary testing. You can then port that design to an Arduino proto shield PCB for a more robust platform. If you want to make more than one, you can then design a PCB that incorporates your idea with the minimum parts for an Arduino compliant clone — all on a single PCB that you can get made through any of the many PCB houses.