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| DIY PAR meter https://aquatictechtank.com/viewtopic.php?f=11&t=150 |
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| Author: | mistergreen [ Mon Jan 21, 2013 6:49 pm ] | ||
| Post subject: | DIY PAR meter | ||
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| Author: | mistergreen [ Mon Jan 21, 2013 6:52 pm ] |
| Post subject: | Re: DIY PAR meter |
The project started very humbly with a photodiode with a wide range that wasn't up to reading PAR. I then found other projects out there. http://www.colorado.edu/eeb/facultysite ... niel03.pdf http://citeseerx.ist.psu.edu/viewdoc/do ... 1&type=pdf |
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| Author: | mistergreen [ Mon Jan 21, 2013 6:57 pm ] |
| Post subject: | Re: DIY PAR meter |
I then found the VTB8441BH and thought about userbility and things went under way for building a nifty gadget. |
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| Author: | mistergreen [ Mon Jan 21, 2013 7:01 pm ] |
| Post subject: | Re: DIY PAR meter |
I soon realized I needed a PAR meter to make calibrations with and can't rely on readings from other people. Light bulb, and reflector vary in output. The 27K resistance needed to be flexible too for calibration purposes. So a pot is in place of the 27K. It's easier than messing with the code with every unit. |
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| Author: | mistergreen [ Mon Jan 21, 2013 7:06 pm ] |
| Post subject: | Re: DIY PAR meter |
With the help of O2Surplus, we went ahead and made the sensor more easy to produce if anybody wants one. The final product. |
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| Author: | JairunCaloth [ Tue Jan 22, 2013 4:21 am ] |
| Post subject: | Re: DIY PAR meter |
Any chance at getting the pcb file uploaded so that anyone can get the board made who wants one? |
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| Author: | mistergreen [ Tue Jan 22, 2013 9:48 am ] |
| Post subject: | Re: DIY PAR meter |
| Author: | O2Surplus [ Tue Jan 22, 2013 10:46 am ] | ||
| Post subject: | Re: DIY PAR meter | ||
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| Author: | JairunCaloth [ Tue Jan 22, 2013 5:34 pm ] |
| Post subject: | Re: DIY PAR meter |
Awesome, thanks a bunch O2Surplus. When I find a new job and have a bit of spare cash I will probably get a few boards made. FYI: Anyone who attempts to use this in Ubuntu 12.04. The version of eagle in the repo is too old to work with these files. You will want to download and install the latest version manually. |
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| Author: | mogg851 [ Sun Jan 27, 2013 12:37 am ] |
| Post subject: | Re: DIY PAR meter |
I was watching this over on TPT. Awesome work and great idea! |
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