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Welding Gloves That Live Forever
Brilliant! I'll have to remember to throw a 12V adapter in my pocket as well as a 9V—I get a lot of nearly-new batteries from tools I repair at work and always get brand new batteries even if the old ones are still good.
Yes ... exactly. The picture in step 7 sure made it look like the top loop was taut when it was actually more slack than the second, knotted row. I'm sure I could make my knots look tidier, but for now they're tied and release easy enough. Whew!
I feel like I'm either amazingly stupid or have been tricked ... I can't figure out how to make the final knot/bow stay in place. I'm using low canvas walking shoes, and once I get it all knotted, my foot flexes against the top part that pulls the top two eyelets apart and that loosens the knot. I finally gave up and just re-laced them how I always did ... :(
I have read that the sensors are corroded by electrolysis, so if you only apply power when doing a reading (e.g. using a free pin to turn on the moisture sensor) the sensor will last a long time. As a bonus, it'll save energy—important if you're electricity supply is fairly limited (e.g. batteries; remote solar-powered moisture sensor).
I went a different route and used a gravity-fed water bucket with valves to each individual plant since each one was different in different sized pots. I was in a bit of a rush and didn't add an option for moisture sensing. So yours has the advantage of moisture sensing but the disadvantage of collective watering, and mine's the opposite! :)I also looked into LED lights but thought the evidence wasn't conclusive, especially given the very specific wavelengths involved and the sheer amount of light power you need. So I went with long-life, high-efficiency T8 fluorescent bulbs: 2 cool white and 2 warm white for a total of 12,000 lumens and 128 watts.
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