Thinking of a new light ..
- Thread starter stardustsailor
- Start date
Mohican
Well-Known Member
The journey is amazing SDS! Your pictures bring me there with you!
My little Greek vacations
I was surprised to see the graph of photosynthesis rates had a substantial (yet lower) rate in the green spectrum. I was waiting for your comments. I am still trying to locate some recent plant physiology work from a leading university.
Cheers,
Mo
My little Greek vacations
I was surprised to see the graph of photosynthesis rates had a substantial (yet lower) rate in the green spectrum. I was waiting for your comments. I am still trying to locate some recent plant physiology work from a leading university.
Cheers,
Mo
stardustsailor
Well-Known Member
'The common bible ' ....The journey is amazing SDS! Your pictures bring me there with you!
My little Greek vacations
I was surprised to see the graph of photosynthesis rates had a substantial (yet lower) rate in the green spectrum. I was waiting for your comments. I am still trying to locate some recent plant physiology work from a leading university.
Cheers,
Mo
http://www.mcgoodwin.net/pages/plantphysuw425.pdf
stardustsailor
Well-Known Member
.......
Soon ....
....
Under the hood ,work is proceeding ...
Some parts left only unassembled ...
By Sunday night ,it might be ready for calibration ....
Soon ....
....
Under the hood ,work is proceeding ...
Some parts left only unassembled ...
By Sunday night ,it might be ready for calibration ....
medicinehuman
Well-Known Member
That is amazing! Let's see someone top this thing, primo job SDS.
Mohican
Well-Known Member
Thanks! I am trying to find 2014 data from Berkeley, Stanford, Germany, UK.... Amazing that there is not any published data for Cannabis grow rates and light reactions. I did find a report from the 1930s that showed Cannabis growth doubled with the introduction of certain levels of CO2. I need to go search some hardcopy sources. Harder to censor and better science than the pop science they perform today. I need to get new glasses - the eyes are getting worse all the time.
stardustsailor
Well-Known Member
Well ,that's just a-rough- idea of what I would like to see available on the market .....
On the 'shelves' ...
From some manufacturer ,at even higher quality standards ....
....
The total build cost is ~ $600...(for a private amauter builder )
Say hand-made ,by US-hands ....
Retail Price ,with taxes ,etc included , $900 -$1200.....
And the fixture has a shit-load of 'things' .....'goodies' ...
And build ,to last several nuclear winters ,producing fine herbs,vegetables and fruits ,even
under hundreds of meters below Earth's surface ....(Too heavy for NASA )
That's how things should have been in my (dream ) world ...
Since ,probably ,ain't exactly like that ....
I've all the power given by a person's mind and hands ,to change my world ,at least ...
The power to make my dreams ,come true ..
Do you get it ,Pet now,what I was meaning ?
People's power ..
One mind ,Pet ...
Thanx ,everybody for the priceless love,aid ,guidance and support ...
Special Thanx to Guod,SupraSPL and Salmone .
And my brother ,Pet .
To White .
Cheers .
On the 'shelves' ...
From some manufacturer ,at even higher quality standards ....
....
The total build cost is ~ $600...(for a private amauter builder )
Say hand-made ,by US-hands ....
Retail Price ,with taxes ,etc included , $900 -$1200.....
And the fixture has a shit-load of 'things' .....'goodies' ...
And build ,to last several nuclear winters ,producing fine herbs,vegetables and fruits ,even
under hundreds of meters below Earth's surface ....(Too heavy for NASA )
That's how things should have been in my (dream ) world ...
Since ,probably ,ain't exactly like that ....
I've all the power given by a person's mind and hands ,to change my world ,at least ...
The power to make my dreams ,come true ..
Do you get it ,Pet now,what I was meaning ?
People's power ..
One mind ,Pet ...
Thanx ,everybody for the priceless love,aid ,guidance and support ...
Special Thanx to Guod,SupraSPL and Salmone .
And my brother ,Pet .
To White .
Cheers .
Last edited:
stardustsailor
Well-Known Member
Finishing a thought ...
Led growers by now have developed a pretty high level of knowledge and 'awareness' ,
regarding LEDs and their utilisation in horticulture ...
Both regarding the ' biological ' and the 'mechanical ' part of the art and science ....
And plenty of other aspects ...
And keep rising their knowledge and awareness .
Along ,must rise their demands ...
'Oneways' are the true utopia ..
' Markets control people '....
Maybe ....
But then,if that's true , it goes both ways ...
If people's demands suddenly arise ...
Markets follow, sweating ...
Led growers by now have developed a pretty high level of knowledge and 'awareness' ,
regarding LEDs and their utilisation in horticulture ...
Both regarding the ' biological ' and the 'mechanical ' part of the art and science ....
And plenty of other aspects ...
And keep rising their knowledge and awareness .
Along ,must rise their demands ...
'Oneways' are the true utopia ..
' Markets control people '....
Maybe ....
But then,if that's true , it goes both ways ...
If people's demands suddenly arise ...
Markets follow, sweating ...
CaliWorthington
Well-Known Member
I swear, if you just built a microphone preamplifier or tube compressor into this thing, you'd have a whole new boutique industry going. Seriously though, impressed by your work, and love that rackmount chassis.
stardustsailor
Well-Known Member
And the .....'specs' of the Fixture ...
( Anybody ideas for 'name' ? )
Spec Sheet#1
Case : Standard 19' Rack Case .
Steel .8mm Top Lid / Bottom .
Aluminium Alloy 2 mm Front control panel / 1mm Rear panel(serves as heatsink for mounted SSR )
Light Engine : 4x Cree CXA3070-0000-000N00Z430H/F
Mounted with 4x Ideal Stainless Steel Array Holders part# 50-2234C and 8x M3 Stainless Steel Allen screws.
.75mm Wiring.
Cooling: Αrrays are mounted per two ,on 200 mm x 160 x 40 mm ,16 fin ,~4 lb heatsinks
made of the softest aluminium alloy of the 10xx series.
TIM used is Arctic Silver #5.
( >.1mm ~ <.2mm )
Heatsink surface contacting arrays has been wet-sanded at 2000 grit.Razor test checked ,passed with total flatness.
Each heatsink is individually active cooled by one Sunon MEC0251V1-0000-A99 120 mm Fan of 5.4 W ( 12 V / .451A )
Dustproof -Magnetic Bearing -Oil Free -Magnetic Levitation Technology.Vertical airflow over the heatsink fins is restricted,
and air is exausted inside the internal case compartment.
Every Power Supply involved is of bare pcb type.Enhanced convection ,no encasing.
Air of internal case compartment is exausted by another -perpendicularly placed- set of
2x Sunon MEC0251V1-0000-A99 120 mm Fan of 5.4 W ( 12 V / .451A ) in parallel operation between them ,but in series with those on the two heatsinks.
All fans are controlled commonly with Voltage regulation.Manually adjusted /selected via pot switch ,
in 12 steps from 6.8 VDC to 13.3 VDC.
Plenty of Aluminium mass and surface ( stiff-bars ,lids,etc ) was used ,to enhance futher the total convection .
Protection:
-AC socket EMI Filter.
-12A /240VAC Class I/II Resettable,latch-type Circuit Breaker ( > 1000 Cycles)
Swiss-made SCHURTER T11-211.
-All PSUs are fused ,AC input / Output EMI filtered,
RFI certificated ,HPF and all feature Short Circuit / Overvoltage Protection.
CXA CC drivers feature Overcurrent and OverTemperature Protection.
Fans & Microcontroller Unit ,CV PSU features OverLoad Protection.
- CXA Arrays are thermally protected via industrial mount Solid State Relay .
(Comus WG A5 6D 25A 240VAC ).
Fault condition Audio/Visual alarm Signaling.
( @ Tc=60°C Drivers Switch off ,Power recovers automatically if fault condition is removed)
Adjustable Tc limit.
Temperature Measuring :
ATMEGA328 (Arduino UNO Rev.3 ) Microcontroller Unit,
Extended Steinhart-Hart Equation based (A1-B1-C1-D1) Temperature calculation.
Refresh Rate : 2 Hz ( Adjustable)
Sensors are 3% NTC thermistors.
Series Resistors calibrated.Jitter Filtered sensor inputs.
Digital 'sample averaging' filter.(adjustable)
Triple regulated (linear) low ,sensor dedicated voltage reference,
(15.5VDC =>9VDC=>5VDC=> 3.3VDC),
ensuring Low self heat of sensors .
Custom Arduino Shield used.
( 9VDC & 3.3 VDC regulation,Buzzer,Thermistor inputs,SSR output,LCD interface )
Sensors attached To Tc measuring point at CXA case with Arctic Silver Epoxy .
( Anybody ideas for 'name' ? )
Spec Sheet#1
Case : Standard 19' Rack Case .
Steel .8mm Top Lid / Bottom .
Aluminium Alloy 2 mm Front control panel / 1mm Rear panel(serves as heatsink for mounted SSR )
Light Engine : 4x Cree CXA3070-0000-000N00Z430H/F
Mounted with 4x Ideal Stainless Steel Array Holders part# 50-2234C and 8x M3 Stainless Steel Allen screws.
.75mm Wiring.
Cooling: Αrrays are mounted per two ,on 200 mm x 160 x 40 mm ,16 fin ,~4 lb heatsinks
made of the softest aluminium alloy of the 10xx series.
TIM used is Arctic Silver #5.
( >.1mm ~ <.2mm )
Heatsink surface contacting arrays has been wet-sanded at 2000 grit.Razor test checked ,passed with total flatness.
Each heatsink is individually active cooled by one Sunon MEC0251V1-0000-A99 120 mm Fan of 5.4 W ( 12 V / .451A )
Dustproof -Magnetic Bearing -Oil Free -Magnetic Levitation Technology.Vertical airflow over the heatsink fins is restricted,
and air is exausted inside the internal case compartment.
Every Power Supply involved is of bare pcb type.Enhanced convection ,no encasing.
Air of internal case compartment is exausted by another -perpendicularly placed- set of
2x Sunon MEC0251V1-0000-A99 120 mm Fan of 5.4 W ( 12 V / .451A ) in parallel operation between them ,but in series with those on the two heatsinks.
All fans are controlled commonly with Voltage regulation.Manually adjusted /selected via pot switch ,
in 12 steps from 6.8 VDC to 13.3 VDC.
Plenty of Aluminium mass and surface ( stiff-bars ,lids,etc ) was used ,to enhance futher the total convection .
Protection:
-AC socket EMI Filter.
-12A /240VAC Class I/II Resettable,latch-type Circuit Breaker ( > 1000 Cycles)
Swiss-made SCHURTER T11-211.
-All PSUs are fused ,AC input / Output EMI filtered,
RFI certificated ,HPF and all feature Short Circuit / Overvoltage Protection.
CXA CC drivers feature Overcurrent and OverTemperature Protection.
Fans & Microcontroller Unit ,CV PSU features OverLoad Protection.
- CXA Arrays are thermally protected via industrial mount Solid State Relay .
(Comus WG A5 6D 25A 240VAC ).
Fault condition Audio/Visual alarm Signaling.
( @ Tc=60°C Drivers Switch off ,Power recovers automatically if fault condition is removed)
Adjustable Tc limit.
Temperature Measuring :
ATMEGA328 (Arduino UNO Rev.3 ) Microcontroller Unit,
Extended Steinhart-Hart Equation based (A1-B1-C1-D1) Temperature calculation.
Refresh Rate : 2 Hz ( Adjustable)
Sensors are 3% NTC thermistors.
Series Resistors calibrated.Jitter Filtered sensor inputs.
Digital 'sample averaging' filter.(adjustable)
Triple regulated (linear) low ,sensor dedicated voltage reference,
(15.5VDC =>9VDC=>5VDC=> 3.3VDC),
ensuring Low self heat of sensors .
Custom Arduino Shield used.
( 9VDC & 3.3 VDC regulation,Buzzer,Thermistor inputs,SSR output,LCD interface )
Sensors attached To Tc measuring point at CXA case with Arctic Silver Epoxy .
Last edited:
stardustsailor
Well-Known Member
I prefer having others building my 'audio' equip ...
Kindergarden stuff...
zangtumtum
Well-Known Member
Amazing Work! thanks a lot to share!
I want to test in my prototype lamp this type of COB.I have right now 2x meanwell LPF-60D-54(1.12A) and 2x LPF-40D-36(1.12A) dimmable with pot 100k.
The 60D at max make 68W, the 40D at max make 47W, both tested after 24 hours of continuous stay realy cool in a sistem with 32 luxeon rebel best bin in 2 separate chanel with 12" fan at 64cfm with little fischer 160x200x25.
The lamp at max power after 24 hours continuos stay stable at 30°C.
The heatsink simulator, in this case, make wrong result: it supposes 43°C.
Do you think it's possible to use this combination of cob and meanwell?
Which COB I can use for my meanwell?
I see the CXA3590-0000-000R0YZ40E7 1.2 A - 77 V - CRI 93...
I know the power it's undersized,but it is for idro-microgrow with little problem in water temp that right now it's not risolved, and I don't know how.
I want to test in my prototype lamp this type of COB.I have right now 2x meanwell LPF-60D-54(1.12A) and 2x LPF-40D-36(1.12A) dimmable with pot 100k.
The 60D at max make 68W, the 40D at max make 47W, both tested after 24 hours of continuous stay realy cool in a sistem with 32 luxeon rebel best bin in 2 separate chanel with 12" fan at 64cfm with little fischer 160x200x25.
The lamp at max power after 24 hours continuos stay stable at 30°C.
The heatsink simulator, in this case, make wrong result: it supposes 43°C.
Do you think it's possible to use this combination of cob and meanwell?
Which COB I can use for my meanwell?
I see the CXA3590-0000-000R0YZ40E7 1.2 A - 77 V - CRI 93...
I know the power it's undersized,but it is for idro-microgrow with little problem in water temp that right now it's not risolved, and I don't know how.
Last edited:
PetFlora
Well-Known Member
Back at school
I have a question Prf SDS..
It's about running engines/cobs soft v 'hard'
I see where lights like A51 suggest maintaining quite a distance between light and canopy, but not so with (the light that shall remain nameless) , which can be kept within inches
So hypothetically...
If driving at half power allows for the light to be twice as close, is there any net benefit to running them 'hard' when it means doubling the distance?
I have a question Prf SDS..
It's about running engines/cobs soft v 'hard'
I see where lights like A51 suggest maintaining quite a distance between light and canopy, but not so with (the light that shall remain nameless) , which can be kept within inches
So hypothetically...
If driving at half power allows for the light to be twice as close, is there any net benefit to running them 'hard' when it means doubling the distance?
PetFlora
Well-Known Member
Are you willing to move here as a consultant and to start production?
Well ,that's just a-rough- idea of what I would like to see available on the market .....
On the 'shelves' ...
From some manufacturer ,at even higher quality standards ....
....
The total build cost is ~ $600...(for a private amauter builder )
Say hand-made ,by US-hands ....
Retail Price ,with taxes ,etc included , $900 -$1200.....
And the fixture has a shit-load of 'things' .....'goodies' ...
And build ,to last several nuclear winters ,producing fine herbs,vegetables and fruits ,even
under hundreds of meters below Earth's surface ....(Too heavy for NASA )
That's how things should have been in my (dream ) world ...
Since ,probably ,ain't exactly like that ....
I've all the power given by a person's mind and hands ,to change my world ,at least ...
The power to make my dreams ,come true ..
Do you get it ,Pet now,what I was meaning ?
People's power ..
One mind ,Pet ...
Thanx ,everybody for the priceless love,aid ,guidance and support ...
Special Thanx to Guod,SupraSPL and Salmone .
And my brother ,Pet .
To White .
Cheers .
stardustsailor
Well-Known Member
Yes,by all means ...
stardustsailor
Well-Known Member
Well,my brother Pet,it is not as simple as you describe it ...
A51 uses lenses ...That's the basic reason of longer distance between fixture and plants ..
But,yes,driving lower the leds ,allows for closer placement to the leaf canopy.
Although ,that's not the reason for driving lower the leds,you know that ..
Efficiency ...As also ,driving leds lower ,it takes larger number of diodes to increase total output power ...
Driving hard the diodes ,is done mainly ,in order to use as less diodes as possible.
(Like on that current fixture,here ...I could have used 8x CXA 3070 ,with max Io = ~1000mA ,instead of ~2000mA..
But yes,you're right in your assumption...Lower driving,more diodes ,higher efficiency ,closer to canopy ,wider emission angles .......
But expensive / pricey ....