rott Posted April 18, 2017 Share Posted April 18, 2017 Making the thing wasn't to hard but calibrating the optic and getting to sit just right in the little plastic bottle was a pain. There was was one guy on the OR bulbs by the end that was making them to sell Sent from my SAMSUNG-SM-G930A using Tapatalk Quote Link to comment Share on other sites More sharing options...
rott Posted April 18, 2017 Share Posted April 18, 2017 But by the time you you would buy one of the Sent from my SAMSUNG-SM-G930A using Tapatalk Quote Link to comment Share on other sites More sharing options...
rott Posted April 18, 2017 Share Posted April 18, 2017 (edited) To make a good one is not cheap and to make a cheap one isn't going to give good readings with out constant adjusting. Edited April 18, 2017 by rott Quote Link to comment Share on other sites More sharing options...
Muttley000 Posted June 29, 2017 Share Posted June 29, 2017 @cheap reefer did you ever move this forward? Quote Link to comment Share on other sites More sharing options...
rott Posted June 29, 2017 Share Posted June 29, 2017 I sent the unit I had to a friend to get it calibrated and on the return trip USPS machine tried to eat it for lunch it was totally destroyed get this with out a store type of receipt the poste office will not reimburse you the $50 ii was insured for the post master here in Toledo said I should of packed in a better box that is when I told him it was one of there box's I paid for his reply was I don't know what to tell you so I am just screwed Quote Link to comment Share on other sites More sharing options...
Muttley000 Posted June 29, 2017 Share Posted June 29, 2017 7 hours ago, rott said: I sent the unit I had to a friend to get it calibrated and on the return trip USPS machine tried to eat it for lunch it was totally destroyed get this with out a store type of receipt the poste office will not reimburse you the $50 ii was insured for the post master here in Toledo said I should of packed in a better box that is when I told him it was one of there box's I paid for his reply was I don't know what to tell you so I am just screwed That is BS! But typical for a government office I guess. Quote Link to comment Share on other sites More sharing options...
rott Posted June 29, 2017 Share Posted June 29, 2017 so it is gone and I am not rebuilding it again it was almost on par Quote Link to comment Share on other sites More sharing options...
cheap reefer Posted June 29, 2017 Author Share Posted June 29, 2017 The cost to diy versus the cost to buy one was not cost effective...and that sucks rott..what the hell is the purpose of insurance then!!...BS!! Quote Link to comment Share on other sites More sharing options...
ElleBlyth Posted January 13, 2021 Share Posted January 13, 2021 Hi...Essentially a "PAR" (Quantum meter) is only a photodiode and filters.When building one the hardest thing would adjust it. Need to coordinate it to a known "genuine" meter. Second hardest thing is getting a blue upgraded photodiode since most are frail on the blue end as to reaction. Tragically the exploration truly went into the "lux" photodiode bend shape. Muttley000 1 Quote Link to comment Share on other sites More sharing options...
Muttley000 Posted January 15, 2021 Share Posted January 15, 2021 On 1/13/2021 at 9:05 AM, ElleBlyth said: Hi...Essentially a "PAR" (Quantum meter) is only a photodiode and filters.When building one the hardest thing would adjust it. Need to coordinate it to a known "genuine" meter. Second hardest thing is getting a blue upgraded photodiode since most are frail on the blue end as to reaction. Tragically the exploration truly went into the "lux" photodiode bend shape. Welcome to the forum, sounds like you have some knowledge about this! Quote Link to comment Share on other sites More sharing options...
PeteR_1 Posted February 14, 2021 Share Posted February 14, 2021 The MultispeQ Beta PAR Sensor is calibrated to 1% accuracy with a LI-COR LI-190R Quantum Sensor. MultispeQ Beta's TCS34715 "PAR" sensor (w/ Hot Mirror)... https://www.scirp.org/journal/paperinformation.aspx?paperid=88576 MultispeQ Beta, PhotosynQ... https://royalsocietypublishing.org/doi/10.1098/rsos.160592 AMS Document... https://ams.com/documents/20143/36005/ColorSensors_AN000166_1-00.pdf/d1290c78-4ef1-5b88-bff0-8e80c2f92b6b This is a Simple I2C PAR Sensor (ubiquitous TCS34725 Color Sensor) for Arduino or RPi that requires; 1. White Acrylic Diffuser Lens(es) with at most 15% Transparency for 0 - 2225 umol/m2/s (PPFD) range. 2. Remote sensor housing is a 3/4" PVC slip coupling (Electrical) with a hole sized for the cable diameter (repurpose Keyboard cables?) 3. Wiring (4 - Conductor) per standard TCS34725 wiring to Arduinos, using 5V /Vin (for the remote cable sensors). 3. Require Lens, Lux and PPFD (PAR) coefficient factors and Bench "Calibration" with Lux meter or PAR meter, if available. 4. Set up using "Fixed" (same) Parameters... 1x - Gain, 700 ms - ATime, 2.4 ms WTIME for all sensors, no exception. These sensor still require calibration with an actual Calibrated PAR Meter for confirmation, appears to be relatively accurate, but are still a "Work in Progress". The sensors can be connected to any Arduino platform that supports the I2C bus and TCS34725 Color Sensor and works with standard Arduino displays. Design and Build are... https://ledgardener.com/forum/viewtopic.php?p=24962#p24962 Quote Link to comment Share on other sites More sharing options...
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