Author Topic: tsop sensor  (Read 8122 times)

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Offline karmaxTopic starter

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tsop sensor
« on: January 24, 2009, 12:02:46 PM »
i am using tsop sensor by this circuit but output is always 4 tp 5 v.can any body tell me wht should be the output
« Last Edit: January 24, 2009, 12:04:11 PM by karmax »

Offline Soeren

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Re: tsop sensor
« Reply #1 on: January 24, 2009, 12:44:22 PM »
Hi,

[...] output is always 4 tp 5 v.can any body tell me wht should be the output
Does the LED light when modulated light hits the sensor? Output should be low when it does.
A 4k7 resistor for R3 might help.

As a first test, put the front of your TV-remote a short distance (like a few inches) from the TSOP (the side with the round mould) and press eg. Vol Up (as it is a repeating key). That should get your output down.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

Offline izua

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Re: tsop sensor
« Reply #2 on: January 24, 2009, 04:49:19 PM »
It's normal for the output to be high, TSOP sensors work in negative logic (1 is off, 0 is on).
Check out my homepage for in depth tutorials on microcontrollers and electronics.

 


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