Dr_Doggy
Well-Known Member
I want to get probes to measure water in my fish tank for dissolved oxygen, nitrates and nitrites, for all 3 probes it runs about 1000$ ....
I have seen diy spectrometers that look simple enough to do, but i wonder if they will be accurate enough to measure ppm's for each:
https://myspectral.com/
https://www.instructables.com/id/An-Arduino-powered-microplate-spectrophotometer/
I like this second one done by biology students,
but i dont understand what the y-axis stepper motor is for(I understand X),
also what light source can i use that would emit a wider spectrum?
I have seen diy spectrometers that look simple enough to do, but i wonder if they will be accurate enough to measure ppm's for each:
https://myspectral.com/
https://www.instructables.com/id/An-Arduino-powered-microplate-spectrophotometer/
I like this second one done by biology students,
but i dont understand what the y-axis stepper motor is for(I understand X),
also what light source can i use that would emit a wider spectrum?