BY MICHAEL SIMPSON
■ FIGURE 3
■ FIGURE 4
■ SCHEMATIC 1
• STEP 4: Assemble the Kronos Robotics
five volt regulator board according to
the included instructions (see Figure 6).
Referring to Schematic 1, the
1Wire network has a 1K resistor holding the data lead to +5V. We will make
a few modifications to the regulator
board to incorporate this resistor. First,
place an additional jumper in the S1
position as shown in Figure 7. This ties
the two outside pins on J8 together.
Next, connect a 1K resistor between
this new jumper and the onboard resistor
as shown in Figure 8. This pulls both the
J8 outside pins to +5V with the resistor.
Install a four-pin header into the
J8 connector as shown in Figure 9.
The last step is to connect a jumper
between the BU1 lead and the third pin
on the J8 header as shown in Figure 10.
I used a small piece of heat shrink to
cover the header. As an option, you
can install a single pin header in BU1
and use a SchmartBoard jumper.
■ FIGURE 6
tive and the lead next to it is positive.
Connect the + and – leads from
the end header on the regulator to the
+ and – leads on the Dios
Carrier 1 module, also
shown in Figure 12.
■ FIGURE 5
■ FIGURE 7
■ FIGURE 8
• STEP 5: Now attach the three completed modules to the 2-3/4” x 4-1/8” acrylic
as shown in Figure 11. I recommend two
layers of double stick foam tape.
• STEP 7: Connect the “TX
To Microcontroller” lead
on the XBee module to the
Dios Carrier 1 port 8.
Connect the “RX From
Microcontroller” lead on the
Xbee module to the Dios
Carrier 1 port 9. Both connections are shown in Figure
13. If you are not clear on
the connections, refer to
the XBee application note
mentioned previously for a
description of each pin.
■ FIGURE 9
• STEP 6: Now it is time to connect the
power leads. Connect the + and –
leads on the center header of the regulator to the + and – leads on the Xbee
module as shown in Figure 12. The outside lead on the XBee module is nega-
• STEP 8: The last jumper is
connected between the last
pin on the regulator J8 header,
and port 1 on the Dios Carrier
1 as shown in Figure 14.
November 2007 43
