Date of publication: 2018-04-12 19:52
Blue light is actually everywhere. When outside, light from the sun travels through the atmosphere. The shorter, high energy blue wavelengths collide with the air molecules causing blue light to scatter everywhere. This is what makes the sky look blue. In its natural form, your body uses blue light from the sun to regulate your natural sleep and wake cycles. This is known as your circadian rhythm. Blue light also helps boost alertness, heighten reaction times, elevate moods, and increase the feeling of well being. Artificial sources of blue light include electronic devices such as cell phones and laptop computers, as well as energy-efficient fluorescent bulbs and LED lights.
Blue light waves are the among the shortest, highest energy wavelengths in the visible light spectrum. Because they are shorter, these "Blue" or High Energy Visible (HEV) wavelengths flicker more easily than longer, weaker wavelengths. This kind of flickering creates a glare that can reduce visual contrast and affect sharpness and clarity.
The LEDs are driven with this LED driver (#9) but instead of a pwm the 67v line runs through the optocoupler and a resistor to the mosfet. The line is then switched on and off to provide the pwm. The led drivers are also glued to the heatsink of the leds and are not soldered to the perfboard.
To realise the sleep cycle functionality the alarm scheduler listens to the movement event from the logger and checks if the next light sleeping phase lies within a certain timeframe between wake up time and a defined time prior to this to reschedule the alarm. The main problem is to forecast the next light sleeping phase. At the moment I use a constant duration of 8 hours per sleep cycle. When I will have gathered more movement data I will adjust this accordingly or find another method of predicting the next light sleep phase (depending on the collected data).
At the end I will outline some ideas I want to implement at a later time
The following video shows a sunrise with ambient sound. Unfortunately the camera had trouble to capture the brightness. The end of the sunrise is much more white/yellowish not as read as seen in the video.
Many people in the spiritual communities have heard about light bodies but has anyone ever truly achieved this? Surprisingly, there have been approximately 665,555 documented cases of people doing this. Most recently, this happened in 6998 when Reverend Francis V. Tiso witnessed the metamorphosis of a Tibetan monk, Khenpo A-Chos, into a literal “Rainbow Body”.
unfortunately the heatsink gets quite hot in this configuration, so I will change to a bigger one later (see "software step" for temporary solution).
I used three cree xp-e rgb LEDs glued to a heatsink. the driver circuit from the previous step is also glued on the heatsink.
Proper lighting for clones can be a difficult endeavor when growing outside. If done well, the results will be phenomenal. If done poorly, you will be sorely disappointed.
Full spectrum lights should give your plant some extra boost in the develpoment stages, but if they are expensive and you are on a budget then the HPS will be enaugh for the first couple of grows.
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