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Item:( QTY 3 ) Bi-Directional Optical Motion Sensor Assembly

( QTY 3 ) Bi-Directional Optical Motion Sensor Assembly

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Ended:Nov 09, 200910:48:20 PST
Quantity:
6 lots available (3 items per lot)
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Price:US $5.75
Shipping:$3.20US Postal Service First Class MailSee more services 

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Other item info
Item number:370273108974
Item location:South Central, United States
Ships to:United States
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Direction Sensing Optical Gap Interrupters

1117

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(3) Dual Optical Gap Interrupter Assemblies
Dual Detectors report direction of travel!
UL Rated, VCC = 5 VDC, TTL Compatible
Auction is for (3) assemblies

Optical Gap Interrupter
     Great for Electro-Mechanical Experimenters
    Application Ideas:
  • Up-Down Volume / Frequency Control
  • Odometer
  • Precision Mechanical Positioner
  • Tachometer with Fwd / Rev
  • Wind Speed Indicator


Here's an interesting device with a wide range of electro-mechanical possibilities.

This optical interrupter differs from the garden variety in one significant aspect: It has Dual Detectors. Together they can be used to sense direction or make an up-down counter. If you look at the test schematic you will see two outputs. In our lab tests, I took a strip of cardboard and cut slots 1/16" wide spaced every ¼ inch. Sliding the strip from right to left, LED A was predominately on, toggling briefly to B as the thin slot passed through the gap. Reversing the direction, LED B came on predominately and toggled briefly to A as the thin slot passed through the gap. Really simple. I used a strip, but a slotted or painted dial (not included) attached to a shaft or knob could just as easily be used.

Measured Output Levels: VLOW = 0.3 Volts, VHIGH = 3.3 Volts
Sensor Gap Width: 1/16"
Connector: FFC 5-Position 1mm-Pitch

The interrupter is mounted to a circuit board with a 0.1µF bypass cap, 150 ohm resistor (for the IR LED source) and connector. Mounting tabs are on the molded plastic sensor. The circuit board can even be discarded if space is critical. For our evaluation, we removed the connector and soldered solid copper wires through the holes to the pads.

OI1-3

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Shipping and handling
Pay only $10.00 shipping for orders of 8 or more eligible items from pbsn6040.
$1.00 shipping for each additional eligible item you buy from pbsn6040.
Item location: South Central, United States
Shipping to: United States
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Each additional item
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Estimated delivery*
US $3.20
US $1.00
United States
US Postal Service First Class Mail®
4-7 business days
*The estimated delivery time is based on the seller's handling time, the shipping service selected, and when the seller receives cleared payment. Sellers are not responsible for shipping service transit times. Transit times may vary, particularly during peak periods.
Domestic handling time
Will usually ship within 2 business days of receiving cleared payment.
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