28123 Parallax Inc, 28123 Datasheet - Page 117

• 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

Up until now, you have been using the 3-position switch in the 1 position. Now, you will
move it to the 2 position to turn on the power to the servo header.
BASIC Stamp HomeWork Board
If you are connecting your servo to a HomeWork Board, you will need these extra parts:
(1) 3-pin male/male header (shown in Figure 4-8).
(4) Jumper wires
Figure 4-9 shows the schematic of the servo and LED circuits on the HomeWork Board.
The instructions that come after this figure will show you how to safely build this circuit.
√
√
Supply power to the servo header by adjusting the 3-position switch as shown
in Figure 4-7. Your servo may move a bit when you connect the power.
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 BASIC
Stamp HomeWork Board. 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.
0
Reset
1
2
Figure 4-7
Power turned on to
Board of Education
and Servo Header
Figure 4-8
HomeWork Board or Board of
Education – Extra Parts
(1) 3-pin male/male header (top)