28122 Parallax Inc, 28122 Datasheet - Page 89
![KIT WHAT'S A MICRO:PARTS ONLY](/photos/26/89/268994/28122-l_sml.jpg)
28122
Manufacturer Part Number
28122
Description
KIT WHAT'S A MICRO:PARTS ONLY
Manufacturer
Parallax Inc
Datasheet
1.28123.pdf
(340 pages)
Specifications of 28122
Accessory Type
Parts Kit
Product
Microcontroller Accessories
Core Processor
PIC16C57c
Flash
128 Bytes
Operating Supply Voltage
9 V
Board Size
31 mm x 16 mm
For Use With/related Products
Board of Education Full Kit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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- Download datasheet (6Mb)
ACTIVITY #3: PUSHBUTTON CONTROL OF AN LED CIRCUIT
Figure 3-10 shows a zoomed in view of a pushbutton and LED used to adjust the settings
on a computer monitor. This is just one of many devices that have a pushbutton that you
can press to adjust the device and an LED to show you the device’s status.
The BASIC Stamp can be programmed to make decisions based on what it senses. For
example, it can be programmed to decide to flash the LED on/off ten times per second
when the button is pressed.
Pushbutton and LED Circuit Parts
(1) Pushbutton – normally open
(1) Resistor - 10 kΩ (brown-black-orange)
(1) LED – any color
(1) Resistor – 220 Ω (red-red-brown)
(1) Resistor – 470 Ω (yellow-violet-brown)
(2) Jumper wires
Building the Pushbutton and LED Circuits
Figure 3-11 shows the pushbutton circuit used in the activity you just finished along with
the LED circuit used in Chapter #2, Activity #2.
Figure 3-10
Button and LED on
a Computer Monitor
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