28036 Parallax Inc, 28036 Datasheet

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28036

Manufacturer Part Number
28036
Description
FOUR DIRECTIONAL TILT SENSOR
Manufacturer
Parallax Inc
Datasheet
1.28036.pdf (4 pages)

Specifications of 28036

Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
28036PAR

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4-Directional Tilt Sensor (#28036)
The 4-Directional Tilt Sensor is a perfect accelerometer replacement in those applications which may not
need precise angular feedback. This type of sensor is commonly used in many smart phones and digital
cameras as a cheaper means to adjust the screen display when the device is rotated.
Features
Key Specifications
Application Ideas
Resources and Downloads
Check for the latest version of this document, free software, and example programs from the 4-
Directional Tilt Sensor product page. Go to www.parallax.com and search 28036.
Theory of Operation
Internally, the 4-Directional Tilt Sensor includes one IR LED, two phototransistors, and a small ball that
moves when the sensor is rotated. Depending on the orientation of the sensor, the two phototransistors
will output high or low signals depending whether light is detected or not. New locations are triggered
when the sensor is rotated roughly 30° toward the new position.
The chart below depicts the cylinder location when rotating the sensor, and the output states of each
phototransistor during revolution.
Copyright © Parallax Inc.
Small 6-pin DIP packaging with
breadboard-friendly 0.1" pin spacing
Easy communication with any
microcontroller
Positional feedback in four directions
Power Requirements: 3 to 5.5 VDC
Communication Interface: 2-pin
high/low output for four sensor states
Operating temperature: 32 to 122 °F
(0 to 50 °C)
Dimensions: 0.42 x 0.32 x 0.49 in
(1.07 x 0.81 x 1.24 cm)
Rotating display adjustment
Robotic movement
Tilt sensing for remote controls
Alarm systems
4-Directional Tilt Sensor (#28036)
Web Site: www.parallax.com
Forums: forums.parallax.com
Sales: sales@parallax.com
Technical: support@parallax.com
v1.0 12/20/2010 Page 1 of 4
Office: (916) 624-8333
Fax: (916) 624-8003
Sales: (888) 512-1024
Tech Support: (888) 997-8267

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28036 Summary of contents

Page 1

... Resources and Downloads Check for the latest version of this document, free software, and example programs from the 4- Directional Tilt Sensor product page www.parallax.com and search 28036. Theory of Operation Internally, the 4-Directional Tilt Sensor includes one IR LED, two phototransistors, and a small ball that moves when the sensor is rotated ...

Page 2

... Maximum output signal voltage approaches power supply voltage. Copyright © Parallax Inc. Location Phototransistor Function Output state of phototransistor 2 Supply Voltage -> 3.0 - 5.5V Ground -> 0V Ground -> 0V Supply Voltage -> 3.0 - 5.5V Output state of phototransistor 1 4-Directional Tilt Sensor (#28036) Phototransistor v1.0 12/20/2010 Page ...

Page 3

... Propeller Tool v1.2.7 or higher, which is available from the Downloads link at www.parallax.com/Propeller. '' 4DirectionalTiltSensor_Simple.spin for P8X32A '' Displays output states of both phototransistors _CLKMODE = XTAL1 + PLL16X _XINFREQ = 5_000_000 OBJ pst : "Parallax Serial Terminal.spin" Copyright © Parallax Inc. 4-Directional Tilt Sensor (#28036) v1.0 12/20/2010 Page ...

Page 4

... PUB Main dira[0..1]~ pst.Start(115_200) repeat pst.Home pst.str(string("Phototransistor 1: ")) pst.bin(ina[0], 1) pst.NewLine pst.str(string("Phototransistor 2: ")) pst.bin(ina[1], 1) waitcnt(clkfreq/10 + cnt) Copyright © Parallax Inc. ' Set pins 0-1 to input ' Set Parallax Serial Terminal to 115,200 baud 4-Directional Tilt Sensor (#28036) v1.0 12/20/2010 Page ...

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