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https://horticulturelightinggroup.com/pages/international-distributors

1gpw is doable both with blurple and hps. I got 0.9gpw with a marshydro 300 (130w) and I was happy with it and I am still suggesting people to get that 70usd panel as a start. But that's cause it costs 70usd or less! Paying more than a hps setup for a light that gives me the same result is a no...

http://ledgardener.com/diy-guides/ its not late

I actually find that the bme280 is the best option in the 0-3$ price range. I red a whole test about different temp&rh sensors, I will post ghe link if I am able to find it once more https://www.dfrobot.com/blog-45.html https://www.intorobotics.com/pick-best-temperature-sensor-arduino-project/...

Everything arrived but got no time to put it together. 16 strips at 400-500mA each in a 2x3x3ft tent. I suppose I can keep plants close enough

I have 90cm/3ft height for pots, plants, light fixture, carbon filter, fans. I went with Eb2s to be able to keep plants close to lights

Im from EU too. I have a Mars light, I used it, I wouldnt get anything else of that kind of light. If you don't want to pay for a QB get a HPS setup instead of that crap Mars, Vipar, etc. From inside EU you can buy Citizen 1212 (gen6) for 10eur/pc

DHT11 or 22 are cheap but there are better options! May I ask you how do you measure the VPD? I already faced it in another user's post. I am also interested to implement a Voltage and Current meter, how did you do yours?

Are you from US or EU? Total 42sqft*30w=1200w You can divide your space in 4 squares, 1200/4=300w 4x http://timbergrowlights.com/model-25ts/ 4x https://horticulturelightinggroup.com/collections/diy/products/260w-qb-led-kit for example

Guys will come don't worry. Going easy: you have a 6x6ft tent? so it is 36sqft. 30w/sqft 30*36=1080w total Is your tent a 6x6?

Guys he is just asking for a plug and play setup, diy is fun but not for everyone. Someone enjoy diy even more than growing probably. A link with a simple description to help him decide and understand could be helpful

Is there a way to use sonoff switches without wifi? I have to build a led fixture for a friend who doesnt have a wifi network

135w kit should be a 288pcs board

https://hackaday.com/2018/03/03/thermal-camera-diagnoses-thermal-issue-on-a-sonoff-switch/

where can you find REAL uvb leds at a reasonable price?

Thank you! You did drill holes and then used self tapping screws, right? Aren't you afraid of the stranded wire breaking inside the connector?

Oh well I was not talking specifically for that. Just something like a smart outlet for many devices. Even a pwm controller

I thought about a simple relay board, arduino (with sensors) and a raspberry pi with a server. Controlling everything through a web interface from pc or spartphone suits me. Atm I have no time to get into libraries to code and php interface. I lost a grow cause my mechanical timer failed and...

by going diy do you mean using arduino and shit like that?

Can someone explain me wtf is "light penetration"? Is it related to the overall "power" of the light? How can we measure it? Multiple light sources seem to emit light from different angles reaching deeper canopy