28125 Parallax Inc, 28125 Datasheet - Page 74

• Manufacturer Part Number: 28125
• Description: TEXT ROBOTICS
• Manufacturer: Parallax Inc

Specifications of 28125

• Title: Robotics with the Boe-Bot
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Connecting the Servos to the Board of Education Rev C
Figure 2-12 shows the servo header on the Board of Education Rev C. This board
features a jumper that you can use to connect the servo’s power supply to either Vin or
Vdd. To move it, you have to pull it upwards and off the pair of pins it rests on, then
push it onto the pair of pins you want it to rest on.
√
√
√
√
When you are done, go to Activity #4: Centering the Servos on page 66.
Turn off the power by setting the 3-position switch on your Board of Education
to position-0 (see Figure 2-11).
If you are using the 6 V battery pack, make sure the jumper between the servo
ports on the Board of Education is set to Vin as shown on the left of Figure 2-
12.
If you are using a 7.5 V, 1000 mA center positive DC supply, set the jumper to
Vdd as shown on the right side of Figure 2-12.
Use only alkaline AA (1.5 V) batteries. Avoid rechargeable batteries because they are 1.2
V instead of 1.5 V.
CAUTION – Misuse of AC powered DC supplies can damage your servos.
If you are inexperienced with DC supplies, consider sticking with the 6 V battery pack that
comes with the Boe-Bot.
Use only supplies with DC output voltage ratings between 6 and 7.5 V, and current output
ratings of 800 mA or more.
Only use a DC supply that is equipped with the same kind of plug as the Boe-Bot battery
pack (2.1 mm, center-positive).
0
Reset
1
2
Figure 2-11
Disconnect
Power