28123 Parallax Inc, 28123 Datasheet - Page 120

• Manufacturer Part Number: 28123
• Description: TEXT WHAT'S A MICROCONTROLLER
• Manufacturer: Parallax Inc
• Type: Programmingr

Specifications of 28123

• Style: Book
• Title: What's a Microcontroller?
• Contents: Whats a Microcontroller? Text
• Product: Microcontroller Accessories
• Core Processor: PIC16C57c
• Flash: 128 Bytes
• Operating Supply Voltage: 9 V
• Board Size: 31 mm x 16 mm
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Board of Education Rev B
Figure 4-12 shows the schematic for the servo and LED circuits on the Board of
Education Rev B. The instructions that come after this figure will show you how to
safely build this circuit on your Board of Education Rev B.
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
X2
X3
√
Vdd
Move on to Programming Servo Control on page 113.
WARNING
Use only a 9 V battery when your Parallax Standard Servo is connected to the Board
of Education Rev B. Do not use any kind of DC supply or “battery replacer” that
plugs into an AC outlet. Improper use of these devices can cause the activity not to
work, or even permanently damage the servo.
For best results, make sure your battery is new. If you are using a rechargeable battery,
make sure it is freshly recharged. It should also be rated for 100 mAh (milliamp hours) or
more. See Appendix D: Batteries and Power Supplies for more information.
Vin
+
Vss
White
Red
Black
www.parallax.com
standard servo
Figure 4-11
Connecting Servo to
Servo Header on a
HomeWork Board