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I did this! Hi! Long time has passed since this original post. I was doing some in field measurem...
Reading a little more I found that you could change the frequency of the PWM in arduino. I did no...
Hi! good question! The frequency of PWM of arduino is about 500hz. Is that enough for conductivit...
I don’t understand why the responsibility for this falls only on the citizens, when it’s real to ...
If using an instrument like a hunter colorimeter, be careful. There is the Hunter L,a,b scale. ...
Little change here. Most water or liquid measurements are on transmitted or absorbed light.
Its very easy to get these two instruments confused. If you are measuring color in industry(as i...
Thanks for sharing the air quality data.
The tungsten lamp remarks only apply to the 660 nm red lines.
Best bet- use an old fashioned tungsten lamp. Not a LED claiming to be a tungsten lamp. An LED ...
Looking into the 660 nm lines. It's not that LEDs don't exist for 425 nm region. They do. But ...
There are 3 in 1 flashlights ( blue, white, and red) that would be good for this application- as ...
If you are using the public lab spectrometer, a light source for around 400 nm is needed. It loo...
A test of this method might be to use lawn clippings and run it through the procedure. The idea...
Another, more current option , is to use a coffee grinder. With the temperature issues this mate...
As for the mortar and pestle, there are many options. Some mortar and pestles are very expensive...
Was checking one of the online vendors. Found new centrifuges for $70. Industrial quality centr...
Ok. Trying to stay as close to duplicate the original paper as closely as possible. R.la cera is...
Caleb Hall- 5/10/2022- Water Security Link 1: Overall, the water quality in Louisiana is good du...
One word of warning. Solvents ( like acetone) and plastic cuvettes do not usually go together. ...
Thank you @warren for replying back. I understand the time constraints you all have due to the hi...
Still have to do more work. But the acetone extract seems like something that might be doable in...
Hey! @jywarren , thanks a lot for ur feedback. For the hashtag idea, it will be useful to aggreg...
This workshop is still the gold standard! Thank you
Yes that's the idea! In DIY Satellite Ground Station workshops we often found it difficult to nav...
There's some work needed to modify this research protocol so it can be done in regions like Ohio ...
I don't know of a community science project using the pigment extraction method since there are s...
This looks great!! Thank you! Is this also a way around all the different platforms ( windows,...
Hi @Liz! Thanks for asking. Yes a link is coming soon. This research note will also be expanded s...
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jdetka commented on Used the PiNoIR camera with blue filter for my experiment in order to obtain the values of NIR and Red region, now i wanted to know what out put we are getting is right or wrong? 10 months ago
Hello, Did you make any additional progress with this? I'm trying to do the same thing and maybe ...