How you do your wiring (and how much wiring you need to do) depends on which microcontroller you are using. Choose the section below that applies to your microcontroller.
You will need a separate power source for your servo's. I recommend 4 C-cell or D-cell batteries, wired in series to make 6V. Check the data sheet to find the power consumption for your servos!
With your servos and power source wired, you're good to go. However there are some optional parts that you can add, for extra functionality:
Here's a schematic diagram showing how to wire each of these optional peripherals:
First, assemble the circuitry on the solderless breadboard. Then solder everything if you can. If you want, make your own Arduino 'shield' with all the connections. This allows you to "plug" the shield into the Arduino, and "unplug" it when the Arduino is needed elsewhere, without losing track of which wires go to which pins.
At this point, everything should work. The following steps are optional:
If you have an electric airsoft gun (or some paintball guns with electric triggers), you can replace the trigger servo with a direct electrical connection to the gun. Besides eliminating the cost and weight of one servo, this gives the sentry a slightly faster response time.
Here's a video tutorial showing basic setup (skip to 1:55 for the wiring stuff):
Next step: Arduino IDE & Processing IDE
Make Your Own >