Hi all,
I am trying to implement VEML6070 with VEML6030 to have a UV and ambient sensor but my results coming out are a bit funky. I built on the open source which combines with VEML6040 attached in link below:
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Datasheets:
Buy VEML6070 Vishay, UV Light Sensor, Solar UV Light Intensity to Digital Data 355 nm I2C 6-Pin OPLGA or other Colour & Light Sensor ICs online from RS for next day delivery on your order plus great service and a great price from the largest...
Buy VEML6030 Vishay, Ambient Light Sensor, Ambient Light to Digital Data I2C 6-Pin or other Colour & Light Sensor ICs online from RS for next day delivery on your order plus great service and a great price from the largest electronics components
veml6070 for the ‘UV index conversion’
veml6030 - CALCULATING THE LUX LEVEL
https://www.mouser.co.uk/pdfdocs/designingveml6030.pdf
Below I have attached my arduino. I seem to get funky results for the UV sensor- as in it will go from 511 to 90 which would be UV index 1.825 to 0.16. If you have any advice or can find my issue would be greatly appreciated.
MOD1024.cpp (4.41 KB)
MOD1024.h (4.04 KB)
new.ino (5.21 KB)
pylon
September 7, 2020, 7:38pm
2
Serial.print(uv);
//Serial.println('\n');
//Serial.print("als");+Serial.print(als);
Serial.println(white);
I have some doubts that you actually see the UV value correctly. Post the output you get! Post a wiring diagram!
Hi thanks for replying
I get values that do seem to modulate with the amount of sunlight and whether Im indoors or outdoors.
Here is images of my PCB and current wiring
For values: Here I walked into the sunlight then back and covered with my hand
14:25:11.914 -> UV: 49.00
Ideally I should be seeing much larger numbers so I can use this to determine UVI
pylon
September 9, 2020, 6:46pm
4
I'm sure that output is not from the posted version of the sketch!
Anyway, I probably see which uncommenting you've done.
Below I have attached my arduino. I seem to get funky results for the UV sensor- as in it will go from 511 to 90 which would be UV index 1.825 to 0.16. If you have any advice or can find my issue would be greatly appreciated.
The values you get correspond to the UV the sensors gets but you think the translation to the UV index is wrong?
BTW, you have to use column two to get the correct translation as the default integration time using your library is 2T.
In my opinion the library doesn't initialize the sensor according to the datasheet.
void VEMLClass::VEML6070_init() {
// Read alert response address to acknowledge pending alerts
Wire.requestFrom(0x0C,1);
// Send initial value
VEML6070_write(0x06);
}
If you use this init() method, the refresh time is set to 1T, so you table applies again.
BTW, your schematics are unusable tiny.
