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Old 08-11-2017, 07:16 AM #31
einsteinlady
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Motors no controller

Yuba,

I have the motors that you posted in eBay link.

How are you running them without a controller?
I don't understand how the motor knows how to roll up, stop, then roll down without relays involved.

Simplifying these without controller would be awesome.
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Old 11-13-2017, 10:48 PM #32
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nice info here, thanks
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Old 05-23-2018, 12:42 AM #33
Bjorn to farm.
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Quote:
Originally Posted by einsteinlady View Post
Yuba,

I have the motors that you posted in eBay link.

How are you running them without a controller?
I don't understand how the motor knows how to roll up, stop, then roll down without relays involved.

Simplifying these without controller would be awesome.
I've got the motors ordered and my 24v power supply has arrived already.
I'll let you know what it takes to get them working.
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Old 12-31-2018, 01:08 AM #34
Stellarpandaz
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Rock & a rope. Dont waste money on something that could fail & herm the crop.
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Old 12-31-2018, 03:18 AM #35
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You have to build a controller. But it can just bee a couple parts. A dpdt relay and a timer. Both can bee had for 7$ on Amazon.
You also need a power source. A transformer is about 15$ on Amazon. So You are looking at About 30$ total.


Pm me and I'll give you links to what you need to get and draw you a wiring diagram.

Stellarpandaz: there are a bunch of reasons to go auto but no reason i can think of not to. In a few years, i have never seen one malfunction. I have had things come up and not been able to manually pull my tarps back before automation. I have had workers pull tarps late and uncover late. Tarps not be secured properly and wind pulled it off. Also manually pulling tarps is hell on the tarp and they always get holes. Yet with auto systems, i have Yet to get even a pin hole years in. Better chance of herms and issues manually pulling. Also, who wants to be a slave to pulling.
Also with an auto, you can cover for an hour at night, uncover when it gets dark, and cover for an hour in the morning. Have it uncovered and getting full ventilation all night while still getting you 12 hrs of dark. Way less of a chance of mold issues.

Last edited by CrushnYuba; 12-31-2018 at 04:25 AM..
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Old 01-01-2019, 12:55 AM #36
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Call me old fashion lol i can think of so many times something mechanical has broken & being 2hours from town its not exactly a easy drive to the store. Agreed there are many pros but also some cons. Alot of folks have been pulling the tarp at night before the automations were big tho. Lived it. Slave to the7pm<9pm< 430 am<7am schedule on a few 50'ers just me & 1other guy. The reason i say no automation is b/c this makes someone look at the crop each day as things progress & u can really see problems & nip them in the bud. To each its own. If a crew isnt dependable then yeah get some automation lol but ive scene more than a few of those things broke out in the hills just for people to revert back to primitive ways..& lets say you leave for a few days..open when u leave open when u come back day light hours right..how would actually 110% know those things opened & closed..w/o failure..those are my only issues with automation..
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Old 01-03-2019, 07:53 AM #37
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If I were pulling a 5m sheet on my own, I would try a pole along the edge I'm pulling, like you would find on a window blind. A product called 'pvc weld' resembles glue, but actually melts surfaces together. It would fix pvc poles to pvc sheet, very permanently. Where I wanted ropes, I would gaffer tape the sheet before ripping through. Gaffer tape surfaces are very 'rip stop' but gaffer adhesive dries up eventually. This is not a permanent build. Just sheet kept flat with rocks, while a pipe painted with sticky is dropped on.

One would lift the pole towards head height perhaps, using a telescopic washing line prop to keep it there. Then hoist it over the last bit.

The pole could be substituted for bamboo canes and gaffer. I think keeping the edge straight, could reduce energy spent on getting things out of shape, then recovering. While maybe offering a little more wind resistance to flapping about.

With no hands on experience, I could be some way off the mark. Perhaps the 5 meter length could be indefinite, using the right pipe and multiple prop points. So I could gradually ease it up along the length of the house. Or maybe the pipe weld would harden off the sheet. causing early fatigue. It can deform plumbing fittings. It's not messing about. Use sparingly is no joke.


Motor control on the pram roofs, might benefit from tilt switches. Like filling tanks, you do it on timer, with a slight over-run. So the float switch really controls the stop point, and the timer is just a second stop, if the switch fails.
It's very easy to set a tilt switch in a milliput resin case. Which in turn is set to a bar clamp. Perhaps using it to disconnect power to a short range timer. So you would have your mains powered segment timer, powering a precision short range timer used for fine adjustment. Which switches the main with its relay output. But the short range clock side is powered via the tilt, to stop the count completely.
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