SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-28T17:39:23-06:00SparkFun ElectronicsCustomer #24502 on DEV-08464 - LilyPad Light SensorCustomer #24502urn:uuid:de863e7c-6f73-5701-1d74-3953001ef1972013-12-31T09:29:39-07:00<p>Does this need to be driven at 5V or can it be driven by 3.3V?</p>
Customer #410356 on DEV-08464 - LilyPad Light SensorCustomer #410356urn:uuid:a75b452d-df7a-6337-ebb5-aa932ecab9012013-09-23T04:36:59-06:00<p>I guess if you were doing a stationary project you could stick this thing onto a cheap night light with its own sensor, and black out everything around your mcguyvered rig so when the night light came on in the dark, the light triggered this thing on.</p>
Kamiquasi on DEV-08464 - LilyPad Light SensorKamiquasiurn:uuid:18d04274-eb90-8315-e74c-c5f23a9d63742013-05-14T07:33:11-06:00<p>Yep. I figured the sensor used was the TEMT6000, and it is, so if you google for e.g. 'arduino temt6000', you'll find tons of examples. If you're not going to use an arduino (or any other microcontroller platform, since they're mostly the same in approach), look for circuits that use a "phototransistor", which is what this technically is :)</p>
532nmIsMyFavoriteColor on DEV-08464 - LilyPad Light Sensor532nmIsMyFavoriteColorurn:uuid:4491701d-06b8-a8f7-fc2f-914f0a590ac32013-05-14T07:24:13-06:00<p>OK, so I would use this with a battery, and more of a switch to turn something on when it is exposed to light... Like the mini photocell, it just works different?</p>
Kamiquasi on DEV-08464 - LilyPad Light SensorKamiquasiurn:uuid:ca227819-272f-185b-6657-f4f40dfff0f02013-05-14T07:22:29-06:00<p>It is very much like a solar panel (one could argue it <em>is</em> a solar panel, albeit a very very very very very tiny one with slightly different characteristics). You wouldn't really use it to power anything, but it's great as a sensor.</p>
532nmIsMyFavoriteColor on DEV-08464 - LilyPad Light Sensor532nmIsMyFavoriteColorurn:uuid:7a289d10-94cb-8601-b2e8-9ba47fc2e0172013-05-14T06:55:07-06:00<p>Does this need a battery to work, or is this like a solar panel, creating the power?</p>
bitsmashed on DEV-08464 - LilyPad Light Sensorbitsmashedurn:uuid:76e89516-e8b7-d49f-7217-d68408e2e5c02012-10-17T10:51:00-06:00<p>You probably want to check out the <a href="http://www.sparkfun.com/datasheets/Sensors/Imaging/TEMT6000.pdf" rel="nofollow">datasheet for the sensor</a>. Figure1 gives you the relationship between collector current and lux.</p>
Customer #365337 on DEV-08464 - LilyPad Light SensorCustomer #365337urn:uuid:65c5003b-01e6-58b8-f053-b7eead8aa68f2012-10-17T10:16:35-06:00<p>OK. If it measures intensity, then does a formula exist for converting from voltage to lux?</p>
MikeGrusin on DEV-08464 - LilyPad Light SensorMikeGrusinurn:uuid:e50e2062-5fba-b99a-5b74-9c47415a2dd22012-10-15T13:44:24-06:00<p>This sensor measures intensity, not wavelength.</p>
Customer #365337 on DEV-08464 - LilyPad Light SensorCustomer #365337urn:uuid:f3a19c5f-bc57-b134-82eb-9f95b1fe46252012-10-12T16:08:06-06:00<p>Do you have a conversion formula from voltage to nanometers?</p>
ebird97 on DEV-08464 - LilyPad Light Sensorebird97urn:uuid:9efc8330-bb01-8f63-7a48-d01da877ca342011-12-25T22:51:51-07:00<p>Yes, connect one lead of a 10k ohm resistor to +V, connect other lead of resistor to one lead of a photocell, then connect last lead of the photocell to GND. The output will be where the lead of the resistor touches the lead of the photocell. As photocell detects less light, the output increases.</p>
mudskipper on DEV-08464 - LilyPad Light Sensormudskipperurn:uuid:80a037bc-baac-a183-ac2a-ae1c38029bae2010-12-29T12:37:24-07:00<p>This may be a kinda dumb question (I'm new to this!)... is there a sensor that does the opposite? I mean, a sensor that increases power to (say, an LED or 4) when available light decreases?<br>
I'm looking to create a motion detection system using lilypad in a quilt. I want the whole thing to fire up when someone walks by it (as it hangs on the wall) so they are surprised by the effect.</p>
JopieK on DEV-08464 - LilyPad Light SensorJopieKurn:uuid:e37a86c7-6b2c-67b5-51e2-19392d3833932010-11-18T04:22:29-07:00<p>I added support of this part to the Fritzing custom libary. You can download it at the Fritzing code site:<br /><br>
http://code.google.com/p/fritzing/issues/detail?id=875<br /><br>
Enjoy!</p>
JopieK on DEV-08464 - LilyPad Light SensorJopieKurn:uuid:c501d94c-85af-5d00-e532-91d4bca9c1d62010-11-18T04:20:20-07:00<p>I added support of this part to the Fritzing custom libary. You can download it at the Fritzing code site:<br /><br>
http://code.google.com/p/fritzing/issues/detail?id=875</p>
JeffG on DEV-08464 - LilyPad Light SensorJeffGurn:uuid:d76a94a3-fe8c-e039-5860-a3d979b860c92010-10-30T07:32:27-06:00<p>The link to the sensor sheet appears to be incorrect. It is the same as the product sticker sheet. Thanks.</p>