Be sure and paint the inside with flat black paint.Be aware that the material used in 3D printing may be transparent at IR wavelengths, or at least far from opaque.
I'll bet you would have more rapid success using an Exacto on some black cardboard and glue.
Just make sure that it's photodetector type and not an ionization type (which most are).Do you realize that a smoke detector that does this exact function costs less than 10 bucks at Walmart? (or on Amazon if no
Walmart is near you) Why not buy one and cut the guts out of it and be done with it!
Indeed, thank you! I will come back with the results soon as I get something sorted.Just make sure that it's photodetector type and not an ionization type (which most are).
The maximum input offset of the TLC272 is 10mV..............
I have connect pin 3 to GND like you suggested and i got 0.15-0.9v on the output pin with everything still connected as it is above. Is this close enough to ZERO that you would expect to see @crutschow?
Unfortunately i don't have the chance to get an oscilloscope at the moment. I'm guessing its noise of some fashion on the breadboard and jumper leads. Are you asking me to set my multimeter to AC and put it on the output pin?The maximum input offset of the TLC272 is 10mV.
Multiplying that by the gain of 100 you have, gives an output offset of 1V maximum.
But how does it vary from 0.15-0.9V?
It should be a steady DC voltage.
It could be noise spikes or oscillations causing the fluctuations.
Do you have access to an oscilloscope?
What output do you read on the AC scale of the multimeter.
That is correct.Unfortunately i don't have the chance to get an oscilloscope at the moment. I'm guessing its noise of some fashion on the breadboard and jumper leads. Are you asking me to set my multimeter to AC and put it on the output pin?
Okay, soon as i get home i will be checking that and reporting back. Thank you for your continued support dude!That is correct.
If the circuit is oscillating you should see some AC voltage.
Thank you for the linked article. I will read that through in the morning over breakfast.Hello, I think you might find this article interesting:
http://www.digikey.ca/en/articles/t...sensors-for-monitoring-air-quality-and-safety
So this is an interesting read this morning. I may refer back and forth to this for some investigations, thank you.Hello, I think you might find this article interesting:
http://www.digikey.ca/en/articles/t...sensors-for-monitoring-air-quality-and-safety