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Description: Basic breakout board for the TEMT6000 Ambient Light Sensor. Only what you need, nothing you don't. Sensor acts like a transistor - the greater the incoming light, the higher the analog voltage on the signal pin.

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Comments 16 comments

  • Yes, I’m using it at 3.3v. Just keep in mind, the current out of this thing is small; I’m buffering it using an op-amp.

  • why use this instead of a photoresistor?

  • Suggestion: Why not use the regular G/V/S layout for pinout? Gnd / Vcc / Signal? Then it’d match practically any servo connector wire pinout.

  • datasheet 404’d:( I found it here

  • Would anyone happen to know the bandwidth for this summabitch? I haven’t been able to find it anywhere, including Vishay’s website.

    • The data sheet shows an input capacitance © of 16 pF. The breakout schematic shows a 10K resistance ® in series. R*C = 160 nS; the RC time constant. Lets call it 200 so that 5 time constants is 1 microsecond. So my, rough guess, expectation is that you should be able to get at least 500 kHz “bandwidth”. My guess is that it would handle any “fast” Arduino project, for example a lightning flash sensor. Another post (Skye) indicates a 15 usec response. Still fast enough for most general light sensing. I think its time for me to get one and test it!

  • The ISL76671 is a newer, more sensitive analog light sensor, for very low light levels. Please make a breakout board for it! :)

  • Exhibits wonderful non-linearity in the output… Go code yourself a correction algorithm…

  • Although the datasheet does not provide this information, an email to Vishay got some dynamic response data. The upshot is that for the fastest response to changing light conditions one must have a high current flowing through the device. Icmax is defined at 20ma. With the 10K resistor (assuming no current out the signal line), and a 5 volt supply, than the maximum collector current is 5/10K or a tiny 500 micro amps. At this condition, rise and fall times are around 15 micro seconds. Increase Ic (by lowering the value of the resistor) and you can drop the times to bellow 10 usec.

  • Amazingly simple to use.
    I’m using it as a trigger in a spectrometer, gives the go signal when the emission starts.
    highly stable and incredibly easy to work with. Only problem is, my fingers are too big

  • Remarkable. I swapped this in place of a potentiometer in my Arduino project and it worked exactly as expected without any changes. It’s great to have this as a breakout.
    Now I have to modify the software to provide some dampening.

  • I’m using it at 3.3v (with a “mbed - LPC1768 Development Board” bought on Sparkfun as well). Just works.

  • I would like to use this in an application where I need much higher resolution, but it won’t need to measure more than 2 lux or so. If I just put a big resistor on the ground pin, will that effectively multiply the voltage on the signal pin? Also, while this won’t need to actively measure more than 2 lux, it will still regularly be exposed to 100+ lux while it’s on. If putting the resistor on there will fry a 5V picaxe I/O pin, it won’t work.
    If this doesn’t work, I’d appreciate any ideas for something that would. I would just use a CdS photoresistor, but linearity is very helpful.

  • What are you doing with it that requires significant current? I was going to sample it with a high-impedance ADC input. I’m assuming I don’t need to buffer that, right?)

  • Anyone know if this will work at 3.3V?


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