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How do you prevent cold air from leaking in at night?
Did some testing. This uses 2 watts when the fan isn't switched on and 6 watts when it is. I will be working on setting this up to a solar panel!
Yeah if you wait to get it from China they only cost about 2 bucks. Even cheaper than you could make an arduino
S.P.R.E.E. (Solar Photovoltaic Renewable Electron Encapsulator), a Compact, Durable, and Portable Solar Energy Generator
Micro Solar Power System
I am starting all of my early crops like onions, broccoli, cabbage, peppers, etc. This is my starting solution, by the time that the plants are big enough I move them out into a cold frame, which is essentially a poormans greenhouse. Eventually I will have a full greenhouse outside that I can hopefully do some year round growing in.
The normal black flats you get a the greenhouse store I can fit 3-4 on each shelf, so you could start a lot of plants this way, especially if you go more vertical. The shelf unit I got was 5 racks high and I'm only using 3 of them.
https://www.instructables.com/id/Temperature-Controlled-Fan-2Here's a link to the fan that I made to regulate the temperature inside my grow tent. It prevents overheating and creates airflow.
Temperature Controlled FanView Instructable »
Seed Starting Reflective Gr...View Instructable »
Could you run this off a coin cell battery? For example, I'd like to put this in my fridge to log temp and alert me if it drops below a certain point. So running a 5V power cord into the fridge would be a pain.
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Is the planer bolted to the bottom shelf? If not could you add it somewhere on top flipped upside down like the miter saw? Then just flip it over when you want to use it?
Mobile Workbench With Built-in Table & Miter Saws
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If you were to have this run on an external battery, how long would it last? Does it have a big draw? Is there a way you could tap into the fridges electricity so it will always have power?
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