MrE Posted May 19, 2021 Share Posted May 19, 2021 Cape Town - second hand totally fine. Quote Link to comment Share on other sites More sharing options...
PsyCLown Posted May 19, 2021 Share Posted May 19, 2021 Why do you want a lux meter? Quote Link to comment Share on other sites More sharing options...
MrE Posted May 19, 2021 Author Share Posted May 19, 2021 3 hours ago, PsyCLown said: Why do you want a lux meter? More accurate PAR readings. Check out the Migro YouTube channel. He calibrated it to an SQ500. Quote Link to comment Share on other sites More sharing options...
PsyCLown Posted May 19, 2021 Share Posted May 19, 2021 More accurate PAR readings. Check out the Migro YouTube channel. He calibrated it to an SQ500.The same unit you're looking for? Sent from my Redmi Note 7 Pro using Tapatalk Quote Link to comment Share on other sites More sharing options...
MrE Posted May 19, 2021 Author Share Posted May 19, 2021 1 hour ago, PsyCLown said: The same unit you're looking for? Sent from my Redmi Note 7 Pro using Tapatalk Yep, that particular product, same sensor in the Bluetooth version and the separated sensor version. 1 Quote Link to comment Share on other sites More sharing options...
Ill_Evan Posted May 19, 2021 Share Posted May 19, 2021 (edited) 4 hours ago, MrE said: More accurate PAR readings But this doesn't measure par? I am confused. Edit: Oh I missed this part: Quote He calibrated it to an SQ500 How would you go about doing the same calibration? Can one just map the setting to the device? Edited May 19, 2021 by Ill_Evan Quote Link to comment Share on other sites More sharing options...
MrE Posted May 19, 2021 Author Share Posted May 19, 2021 (edited) 10 hours ago, Ill_Evan said: But this doesn't measure par? I am confused. Edit: Oh I missed this part: How would you go about doing the same calibration? Can one just map the setting to the device? And As long as your light is in the 3500K - 3000K arena, your readings are going to be pretty accurate. People with iPhones can use the Photone app. For Android phones with actual lux sensors and not newer ones that now use the front camera as a light sensor, the apps PPFD Meter and Tent Buddy can be used with decent accuracy if you go to a lot of effort to get average readings. Edited May 20, 2021 by MrE 1 Quote Link to comment Share on other sites More sharing options...
PsyCLown Posted May 20, 2021 Share Posted May 20, 2021 How would you go about doing the same calibration? Can one just map the setting to the device? If it's the same sensor and gives consistent readings, then at X lux it would be a specific ppfd value. Start low and go up and it will give you some indication at least.Better than no idea and just winging it although a quantum sensor would still be best and most accurate. Sent from my Redmi Note 7 Pro using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Pants Posted May 20, 2021 Share Posted May 20, 2021 Watched a MIGRO video last night where he compares smartphone apps to his quantum sensor and Photone on the iPhone was incredible accurateSent from my iPhone using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
PsyCLown Posted May 20, 2021 Share Posted May 20, 2021 1 hour ago, Pants said: Watched a MIGRO video last night where he compares smartphone apps to his quantum sensor and Photone on the iPhone was incredible accurate Sent from my iPhone using Tapatalk It would work well with iPhone as they're all the same. So same sensors would be used and it can be calibrated. With Android, different story as flavours and choice are a thing in the Android world. Chances of all of Samsung's phones using the same sensors is a bit unlikely and then even more unlikely that different brands would use the same sensors. ie Xiaomi, HTC, LG, Samsung, Hauwei etc. all using the same sensors on all of their phones. So calibration then needs to happen per model and it is not unheard of for the same model of phone (Let's use a Samsung Galaxy S21 as an example) to have the same sensor throughout production. In the past certain changes have happened on smaller components due to stock and availability but in the bigger scheme this does not really matter or affect the end user much but in the case of trying to use your phone to work out the PPFD from your light - different story. 2 Quote Link to comment Share on other sites More sharing options...
Prom Posted May 20, 2021 Share Posted May 20, 2021 I checked 3 LUX apps with different light configuarations and different diodes. Over 500 micromol PAR the readings were up to 20% off. If you are in CT, can check to come by and we measure your app with your own lights and a sq500... those numbers make more sense to trust. ts3000 and a 600 watt bar lamp had very different readings for flower distance. 1 2 1 Quote Link to comment Share on other sites More sharing options...
MrE Posted May 22, 2021 Author Share Posted May 22, 2021 Fyi, located a second hand one on the cheap. Yay. 1 Quote Link to comment Share on other sites More sharing options...
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