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Thread: DIY PAR meter, Yeah you heard me Reply to Thread
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Topic Review (Newest First)
Yesterday 06:44 AM
RootedMind I just read this entire thing and am amazed at the dedication and cooperation, polite constructive criticism given and received. Awesome work.
11-20-2014 03:54 PM
mistergreen Well, it was kind of fun. I think the last iteration with the light filters researched by hoppy is the best. It also has readings for sun light base on apogee's known 10% discrepancy.

So, I'm out of O2surplus' atmega boards and calling it a day
11-19-2014 10:05 PM
O2surplus
Quote:
Originally Posted by mistergreen View Post
Ok, I've sold off the last meter. I won't make anymore new ones.

Wow- Talk about "having the patience of Job"! It's been 4 years since you started this thread! Consign this project to the history books!
11-19-2014 05:04 PM
mistergreen Ok, I've sold off the last meter. I won't make anymore new ones.
07-02-2014 09:49 PM
thor79
Quote:
Originally Posted by ucrdave View Post
This sounds like a great idea. I would hope you start this soon. He does sell the PAR meters, just contact him directly on his page or email.
Yep, that's what I did. One of the meters should be on the way to me soon. That will help quite a bit to finishing off my Netduino-based Meter. It's close, but there are some details I need to work out.

I will start working on the guide after I get my meter working and calibrated.
07-02-2014 08:25 PM
ucrdave
Quote:
Originally Posted by thor79 View Post
Mistergreen...I may be interested in picking up one of those meters you still have to sell.

The thread turned from a pure DIY project to a bit more of a community developed full blown product. Because of that, it seems the DIY-ness of the thread went by the way side, and there are some details lacking from the original post. It's a little difficult to pick up on all the details in a thread 39 pages long. I still want to build my own just to do it (and possibly add some features)....as I already have most of the parts for it, but I figure picking up one of your prepared meters to calibrate against would be good to get a Netduino based version going.

After developing that I think I may put together a more comprehensive guide on building this from scratch (crediting you completely for all the work involved developing the fantastic meter built from this thread, of course)...for the true DIYer's out there.
This sounds like a great idea. I would hope you start this soon. He does sell the PAR meters, just contact him directly on his page or email.
06-27-2014 08:56 PM
thor79 Mistergreen...I may be interested in picking up one of those meters you still have to sell.

The thread turned from a pure DIY project to a bit more of a community developed full blown product. Because of that, it seems the DIY-ness of the thread went by the way side, and there are some details lacking from the original post. It's a little difficult to pick up on all the details in a thread 39 pages long. I still want to build my own just to do it (and possibly add some features)....as I already have most of the parts for it, but I figure picking up one of your prepared meters to calibrate against would be good to get a Netduino based version going.

After developing that I think I may put together a more comprehensive guide on building this from scratch (crediting you completely for all the work involved developing the fantastic meter built from this thread, of course)...for the true DIYer's out there.
06-18-2014 02:12 PM
mistergreen Here are the updates
http://aquatictechtank.net/viewtopic...150&p=508#p508
06-18-2014 07:02 AM
ucrdave Cant wait to see the updates. Thank you for the prompt email and known availability. Ill make sure to stash away funds till next month =) Ive already spent too much on getting my two 5 gal nano tanks going. pssst (still need to purchase a paintball tank for my azoo regulator)
06-17-2014 08:07 PM
mistergreen I have a few I can sell.

Btw. I've updated this using light filters on the photo diode to make it a bit more sensitive to PAR waves. I'll post picts soon.
06-17-2014 07:57 PM
ucrdave Are these still being sold?
06-11-2014 07:38 PM
thor79 I do believe I'm going to dive into this...though I'm going to convert it to use a Netduino. It should work exactly the same hardware-wise but .Net is the framework I work in and C# is the code (web developer at a .Net shop is my day job). Already have all the tools I need to do it as I've already done some work with a previous Netduino mini and a toy Tron Identity Disc

edit: parts ordered
01-22-2014 03:50 AM
Tom in Cincy Hi. New here but love Arduino projects. Looking to buy a scrap of 2447 and a sensor if anyone has any extra.
01-04-2014 01:18 AM
mistergreen something weird. Check for shorts.
try this simplified code. It simply reads analog 0.

Code:
void setup() {
Serial.begin(115200); // Max for Arduino Uno
}

void loop() {
  int sensorValue = analogRead(0);
  Serial.println(sensorValue);
}
The values are not par but should change in different lighting situations. If it doesn't, something is wrong with the hardware.
01-04-2014 12:44 AM
seran
Quote:
Originally Posted by mistergreen View Post
What's your code? It might be the software.
This code is what I used. Is there any something wrong?

Quote:
<CODE>

// CLOSE ENOUGH PAR Written in Arduino 23 By MISTERGREEN
// for sunlight and indoor light
#include <math.h>
float average = 0;
float output_indoor = 0;
float output_outdoor = 0;
float factor = 0;
unsigned long time;
int counter = 0;

void setup() {
time = millis();
// set up the LCD's number of rows and columns:
Serial.begin(115200); // Max for Arduino Uno
}

void loop() {

int sensorValue = analogRead(0);
average += sensorValue;
counter++;

//every second or 1000 millis
if(millis() > time+1000) {
//corrections to fit par
average = average/counter;

if(average <= 560) {
factor = 2.077;
}
else {
factor = 1.934;
}
float tempout = average * factor;
//indoor fluorensence
output_indoor = tempout;

//add 10% to output for sunlight
output_outdoor = tempout + (tempout * .10);

Serial.print(output_indoor);
Serial.print(",");
Serial.println(output_outdoor);

//reset timer & counter to get ready for the next second.
time = millis();
counter = 0;
average = 0;

}

delay(5);

}
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