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Sharp (AMBI) vs the Vishay Temt6000 Sparkfun
Posted: Wed Mar 30, 2011 8:29 pm
by mdAndy
The MD Sharp ambient light sensor (AMBI) vs the Vishay Temt6000 (Sparkfun)
In searching for the best light sensor for my OpenPicus Flyport Wifi Webserver Garage Door
Controller, I used the Vishay Temt6000 until I found the Modern Device Sharp
ambient light sensor (AMBI). There is no comparison - the Sharp is extremely sensitive and
I was able to determine when the lights were on in the garage or when the garage door
was opened. Needless to say, I trashed the TEMT6000.
http://arduino.cc/forum/index.php/topic,50887.0.html
Re: Sharp (AMBI) vs the Vishay Temt6000 Sparkfun
Posted: Wed Mar 30, 2011 9:04 pm
by oz
Hey thanks for the nice write-up MDAndy,
I love that Sharp chip with the log amp. I'd been looking for one with a log amp for a long time. It seems like Taos should have done one, with their line of light sensors, but they never really have. It always puzzled me.
I don't have it posted anywhere - but you can also control the sensitivity of the Sharp - if you are using it in direct sun, by paralleling a 100K resistor from it's output to ground. Twice the current = half the voltage and the sensor doesn't even saturate in noon-time sun.
Plus it's very inexpensive and if you know anything about M.D. ...
Paul
Re: Sharp (AMBI) vs the Vishay Temt6000 Sparkfun
Posted: Thu Nov 22, 2012 1:22 pm
by Elina
Hi mdAndy,
Could you help me with this issue about ambi light sensor:
http://arduino.cc/forum/index.php/topic,133522.0.html
Thanks.
mdAndy wrote:The MD Sharp ambient light sensor (AMBI) vs the Vishay Temt6000 (Sparkfun)
In searching for the best light sensor for my OpenPicus Flyport Wifi Webserver Garage Door
Controller, I used the Vishay Temt6000 until I found the Modern Device Sharp
ambient light sensor (AMBI). There is no comparison - the Sharp is extremely sensitive and
I was able to determine when the lights were on in the garage or when the garage door
was opened. Needless to say, I trashed the TEMT6000.
http://arduino.cc/forum/index.php/topic,50887.0.html
Re: Sharp (AMBI) vs the Vishay Temt6000 Sparkfun
Posted: Tue Jan 29, 2013 5:46 am
by Carloscoleman
Elina wrote:Hi mdAndy,
Could you help me with this issue about ambi light sensor:
http://arduino.cc/forum/index.php/topic,133522.0.html
Thanks.
mdAndy wrote:The MD Sharp ambient light sensor (AMBI) vs the Vishay Temt6000 (Sparkfun)
In searching for the best light sensor for my OpenPicus Flyport Wifi Webserver Garage Door
Controller, I used the Vishay Temt6000 until I found the Modern Device Sharp
ambient light sensor (AMBI). There is no comparison - the Sharp is extremely sensitive and
I was able to determine when the lights were on in the garage or when the garage door
was opened. Needless to say, I trashed the TEMT6000.
http://arduino.cc/forum/index.php/topic,50887.0.html
hello have you sorted the light issue? I am facing it from some days
Re: Sharp (AMBI) vs the Vishay Temt6000 Sparkfun
Posted: Wed Jan 30, 2013 2:30 am
by Carloscoleman
Carloscoleman wrote:
hello have you sorted the light issue? I am facing it from some days
Re: Sharp (AMBI) vs the Vishay Temt6000 Sparkfun
Posted: Thu Jan 31, 2013 11:48 am
by oz
Elina,
Sorry I can't understand what is going on in your thread. No voltage output on the sensor?
Did you put a multimeter on the output? If you put a meter on the output and can't see it change, the odds are that the sensor is
damaged. That particular sensor doesn't suffer reverse polarity very well, so that might one reason why things aren't working.
Also the circuit is a fairly high impedance circuit so sweat, tears, acid flux and the like might affect the output.
Email us at the contact on the website and explain the situation and we'll give you a new sensor gratis.
Hope that helps,
Paul