Servo - November 2008

holder, as well as a nine-volt battery. Take the battery clip and attach the ends to a small two-pin female header as shown in Figure 18. Cut the red lead at about 3. 5 inches from the clip. Strip and solder each red lead to a small toggle switch as shown in Figure 18. Attach the cable assembly to the carrier board as shown in Figure 19. Make sure the black lead faces the capacitor.

Figure 11

• STEP 10: At this point, you
can perform an LED test. Before
you can do that, you need to build the EZRS232
driver. The EZRS232 driver comes with a male
header so you have two choices. The first is to
install a five-pin female header in place of the
included male header as shown in Figure 20.
Another option is to create a female-to-female
connector by attaching two five-pin female
headers together and using this as an adapter.

Figure 12

Figure 13

Figure 14

Figure 15

• STEP 11: Attach the battery to the battery
clip and the LEDs should begin to light. This is
because each DiosPro chip comes preprogrammed
with a test program. Attach the EZRS232 to the
Dios Carrier as shown in Figure 21, then connect
the nine-pin cable to your PC and start up the
Dios compiler. Load and program the included file called
DiosLEDtest.txt into the Dios. The two LEDs should blink
and then stop when the button is pressed.

• STEP 12: I will be using some small female-to-female jumpers to connect the memory card and GPS module to the Dios carrier. These can be purchased from Schmartboard at www.schmartboard.com/index.asp? a= 11&id= 42.

We need to create a couple of split power connectors. In order to do this, take three of the jumpers and cut them in half. Then connect three of the pieces to create the split jumper shown in Figure 22. You will need to make two of these jumpers.

• STEP 15: For the following connections, you need to refer to Schematic 1 and the Dios Carrier 1 manual to help you find the pin location.

Connect a jumper between the GPS TX lead (black) to the carrier port 8. Next, connect the GPS RX lead (white) to the carrier port 9.

At this point, you can test the GPS. Apply power to the Dios and attach the RS-232 driver. Load and program the Dios with the file called DiosEM408test.txt that I have

• STEP 13: Take one of the split jumpers and connect one end to the J1 pin 2 as shown in Figure 23. Then connect one of the other ends to the GPS GND lead (black). Connect the last end to the memory board pin 5 (GND).

With the second split jumper, connect one end to the J1 pin 1 as shown in Figure 23. Then connect the other ends to the GPS VCC and Enable leads (white and red).

• STEP 14: Take a single 5” jumper and connect it to the VCC pin (marked +) on the carrier and the VCC lead on the memory board (pin 3) as shown in Figure 24.