search

rbaron / b-parasite

🌱💧 An open source DIY soil moisture sensor
1.84k stars 143 forks source link

Adding #167

Closed victorhooi closed 7 months ago

victorhooi commented 7 months ago

What do you think of swapping in a sensor capable of PAR measurements, for measuring light relevant to plants?

(PAR and PPFD are pretty commonly used within the hydroponics and plant communities).

Actual PAR sensors are normally quite expensive (e.g $1000 upwards - I bought a small handheld Apogee unit some time back):

https://www.apogeeinstruments.com/dli-600-epar-daily-light-integral-and-photoperiod-meter-epar-400-750-nm/#product-tab-description

However, I found a recent journal article here:

https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/Adaptalight-An-inexpensive-PAR-sensor-system/991005541210507891

where they talk about using the Sparkfun AS7265x-based boards to emulate a much more expensive PAR sensor

I actually did some research on this earlier here:

https://forum.radicaldiy.com/t/brainstorming-par-photosynthetically-active-radiation-light-sensor-for-mycodo/1557

and there's a few people who used the AMS TCS34725 color sensor (since discontinued) to try to emulate more expensive PAR sensors.

However, the above paper uses the newer AMS AS7265x, which apparently work better.

Anyway - what do you think about integrating the AS7265x chips onto the board?

Would something like that be feasible at all?

victorhooi commented 7 months ago

Sorry, this was a dupe of https://github.com/rbaron/b-parasite/issues/168 - not sure what happened but the Github site seemed to submit it twice/early?