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February 14, 2014
about 2 years ago
Theoretically, this sensor could be used with a diffraction grating to make a UV spectrometer. The diffraction grating should be capable of separating light in the 280-390nm range into fairly discrete wavelength bands. Slightly rotating the diffraction grating, say with a stepper motor, would align a specific band to shine on the sensor and the sensor would measure only that band’s intensity. Of course, not being able to see UV light with our eyes does not help with a project like this.
From the photo, assuming larger square in the chip is the sensor, and the dimensions in the datasheet, it looks like the sensor size is 1 square millimetre. This makes it much larger than the units based on the GUVA-S12SD chip which has a sensor area of 0.076 square millimetre.
What would the advantage of a larger sensor be?
about 2 years ago
Power source question: If both a USB cable is connected and a battery is wired to RAW, which power source will the Pro Micro use?
about 3 years ago
Hey there. I am a little confused. I was looking at the schematic PDF on this page comparing it to the diagram from this tutorial page: https://learn.sparkfun.com/tutorials/pro-micro–fio-v3-hookup-guide/hardware-overview-pro-micro
My confusion lies with the pins on the board labeled 8, 9, 10, 16, 14, 15. The diagram on the linked page indicates:
D8 / A8, D9# / A9, D10# / A10, D16 / MOSI, D14 / MISO, D15 / SCLK
On the other hand, the Pro Micro PDF schematic link in this page indicates:
D8, D9# / A8, D10#, D16 /MOSI, D14 / RX LED, D16
then MISO is at D17 which does not even exist on the Pro Micro.
Would you be able to suggest which description is the correct one?
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