Week4@inCharge
Well-Known Member
I had to edit that last post.. I just looked at my notes on the LUX calculations and it was pretty dam close.. crazy.
How were you calculating par using lux? I take lux and multiply by .015 but maybe there is a better way i don't know about.I had to edit that last post.. I just looked at my notes on the LUX calculations and it was pretty dam close.. crazy.
Look for the kelvin of your led setup (I'm just assuming you have a led lighting kit here) and choose the corresponding HIGH CRI LED for calculations from this site. It's dam near accurate.How were you calculating par using lux? I take lux and multiply by .015 but maybe there is a better way i don't know about.
best $6 I ever spent@bk78 .... @2com was telling me about the Photone app for newer phones, and it rated against the Apogee within the same parameters as you were saying.. like 10-30 par. I downloaded it, and was pretty impressed for free. Well, you gotta pay like $5.99 for the type of light your using, but what I really like about it is it gives you DLI (Daily Light Integral). So you just choose how many hours a day you're on (12/12 or 18/6 or 24/0) and it gives you a recommended level you should be at, and at what phase of the grow you're in (week). Pretty cool. iPhones require a diffuser that you make out of copy paper (very easy), but Android does not require a diffuser.
That's why I looked into this Photone app... its free, and pretty damn accurate. I paid like $100 for a HydroFarmer Par meter and didn't use it but a few times, but this app is pretty spot on, and it has more features... besides that, I observe the plants for light stress.
Not accurate on my iPhone 12 Pro at allIf you have a newer iPhone the Photone app is really accurate, doesn’t hit extended par ranges like far red/ir but thats just a little math.
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PAR meter APPs tested & compared for accuracy
Can PAR meter apps measure PAR accurately? An accurate quantum sensor for measuring PAR cost over $350, way out of reach of most home growers. However, there are a number of smartphone apps which allow you measure PAR (Photosynthetically Active Radiation, the wavelengths of light that grow...migrolight.com
The numbers are almost the same using that calculator as they are multiplying by .015 so that's good to know. Par is 800 with the calculator and 750 when you multiply.Look for the kelvin of your led setup (I'm just assuming you have a led lighting kit here) and choose the corresponding HIGH CRI LED for calculations from this site. It's dam near accurate.
Convert Lux to PPFD - Online Calculator | Waveform Lighting
Online calculator to convert illuminance (lux) to PPFD (micromoles per second per meter squared).www.waveformlighting.com
hate when that happens! hope you get it sooner than later.Looking forward to testing the Photone app (iPhone XS + a couple different diffusers) against the Phantom meter, but UPS just changed my tracking from 'delivering today' to SEVERE WEATHER DELAY with no date.
I mean, given that I didn't even expect or intend to buy it until this past Tuesday, I can't really get too worked up about things, but I was hoping to spend some time measuring and comparing this weekend (removing plants from the tent, measuring from heights and different brightnesses and all), so it'll have to wait until mid next week or next weekend.hate when that happens! hope you get it sooner than later.
Interested to see how the iPhone XS reads compared to my newer sensor I tested. My was pretty consistent at around 100 ppfd off from my pulse and photobioLooking forward to testing the Photone app (iPhone XS + a couple different diffusers) against the Phantom meter, but UPS just changed my tracking from 'delivering today' to SEVERE WEATHER DELAY with no date.
Yeah, me too. I wish I had a decent & calibrated Apogee to test against too, but whatever. No place locally that rents them or anything. Though at 'consistently 100ppfd off,' it would be fairly easy to calibrate to that. Assuming I find both reasonably close to each other I'd probably calibrate the Photone to match and then use both in different ways. Super convenient to just grab my phone, set it for DLI and spot check every once in a while.Interested to see how the iPhone XS reads compared to my newer sensor I tested. My was pretty consistent at around 100 ppfd off from my pulse and photobio
You get your Phantom meter in?Yeah, me too. I wish I had a decent & calibrated Apogee to test against too, but whatever. No place locally that rents them or anything. Though at 'consistently 100ppfd off,' it would be fairly easy to calibrate to that. Assuming I find both reasonably close to each other I'd probably calibrate the Photone to match and then use both in different ways. Super convenient to just grab my phone, set it for DLI and spot check every once in a while.
It literally JUST arrived moments ago.You get your Phantom meter in?
Cool... it'll be interesting to see how your comparison is to BK's... I know in the instructions on the app, it says to use a certain weight of paper for the diffuser, and I believe you guys are using different phone models... I'll be tuning in!It literally JUST arrived moments ago.
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People weren't kidding when they said this feels cheap...Certainly is super lightweight and plasticy. I hope they spent on the sensor and electronics and saved on the cases... Tonight is a feed night for me, so once the lights come on just after 5 I'll do that and do some test/comparisons.
I had to dig out an old Samsung Galaxy tablet from my road gear to find a something with a camera, since my phone will be busy.Cool... it'll be interesting to see how your comparison is to BK's... I know in the instructions on the app, it says to use a certain weight of paper for the diffuser, and I believe you guys are using different phone models... I'll be tuning in!
The one thing I wish the Apogee had.. that DLI. Gonna calibrate the Photone later on... or try too..Yeah, me too. I wish I had a decent & calibrated Apogee to test against too, but whatever. No place locally that rents them or anything. Though at 'consistently 100ppfd off,' it would be fairly easy to calibrate to that. Assuming I find both reasonably close to each other I'd probably calibrate the Photone to match and then use both in different ways. Super convenient to just grab my phone, set it for DLI and spot check every once in a while.
Yeah, shortly (like in about 15 minutes)...I'll stop being lazy and get down to the tent for feed/inspection & lighting fun. My tent is pretty small (60" x 32" x 80") and I've got 3x HLG 225's which are supposedly good for 2x2 or 3x3 strung across the 60" width, so there's really no serious 'dead spots' in the tent.The one thing I wish the Apogee had.. that DLI. Gonna calibrate the Photone later on... or try too..I was up early rearranging pots and couple lights for the optimum spread of light,