Automating a Greenhouse with LoRa! (Part 2) Motorized Window Opener
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Date: 2020-09-05
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Comments and reviews: 9
GreatScott!
I feel like I need to explain some things a bit more after reading through the comments:
- I did not directly use the McMaster-Carr component library gear and rack. You are not allowed to 3D print them. I only used them as a rough reference in order to create my own.
- I did not include limit switches because I thought it would be an overkill for such a simple system. Instead my rack holder is open at one end. So if the window is fully closed and the motor wants to keep going, the rack can be pushed out without destroying anything. The opening and closing time is done by a delay and was measured by myself. The opening time is a bit longer than the closing time. Thus after a month or two the rack will slightly get pushed out of the holder due to misalignments. But you can easily fix that by hand.
I hope that answers some of your questions and I hope that you still enjoyed the video even without me mentioning those information: -)
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I feel like I need to explain some things a bit more after reading through the comments:
- I did not directly use the McMaster-Carr component library gear and rack. You are not allowed to 3D print them. I only used them as a rough reference in order to create my own.
- I did not include limit switches because I thought it would be an overkill for such a simple system. Instead my rack holder is open at one end. So if the window is fully closed and the motor wants to keep going, the rack can be pushed out without destroying anything. The opening and closing time is done by a delay and was measured by myself. The opening time is a bit longer than the closing time. Thus after a month or two the rack will slightly get pushed out of the holder due to misalignments. But you can easily fix that by hand.
I hope that answers some of your questions and I hope that you still enjoyed the video even without me mentioning those information: -)
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Sierra
I had an idea for a future project have you ever thought of making a video of using two Arduino's to make a secure encrypted wireless transceiver to be able to talk using a microphone or as well as a morse code configuration like the older military radios back in the day? :) It's still offered on some newer types of military transceivers! _ Thanks for sharing a new video and a new idea!
PS: You would have to look up your wireless communication laws in Germany but here in Canada using your own private transmissions that are encrypted without a licence is illegal on certain frequency s. :/
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I had an idea for a future project have you ever thought of making a video of using two Arduino's to make a secure encrypted wireless transceiver to be able to talk using a microphone or as well as a morse code configuration like the older military radios back in the day? :) It's still offered on some newer types of military transceivers! _ Thanks for sharing a new video and a new idea!
PS: You would have to look up your wireless communication laws in Germany but here in Canada using your own private transmissions that are encrypted without a licence is illegal on certain frequency s. :/
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Gergely
I'm just wondering, that the poor little linear regulator will have a bad time supplying couple of 100 mA to open the window.
Let's say, that during the opening the motor takes double its no-load current. The input voltage of the regulator is 12V, the output is 5V, and the current is 140 mA. This means, that the regulator have to dissipate (12 - 5) 0. 14 = 1W.
If I were You, I would take a look at the current consumption and the temperature of the regulator of the motor during opening, and I would use at least a heatsink on the regulator, or a buck converter.
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I'm just wondering, that the poor little linear regulator will have a bad time supplying couple of 100 mA to open the window.
Let's say, that during the opening the motor takes double its no-load current. The input voltage of the regulator is 12V, the output is 5V, and the current is 140 mA. This means, that the regulator have to dissipate (12 - 5) 0. 14 = 1W.
If I were You, I would take a look at the current consumption and the temperature of the regulator of the motor during opening, and I would use at least a heatsink on the regulator, or a buck converter.
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Calvin
The controls engineer in me desperately wants you to create a control system to manage open angle of the window. You could probably get away with something as simple as a bang bang controller that measures the humidity and opens or closes the window depending on what values you give it. You could even go further by including a fan and also controlling the angle at which the window is open. Either way though, great project, thanks for sharing!
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The controls engineer in me desperately wants you to create a control system to manage open angle of the window. You could probably get away with something as simple as a bang bang controller that measures the humidity and opens or closes the window depending on what values you give it. You could even go further by including a fan and also controlling the angle at which the window is open. Either way though, great project, thanks for sharing!
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thien
Why don't you make a FULLY automated garden system so that if you are ever on vacation, you can have remote monitor security cameras, automated watering system, and even a robot to assist with harvesting the vegetables. Also, make the windows a little more durable and add some limit and reed switches so that nothing goes wrong.
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Why don't you make a FULLY automated garden system so that if you are ever on vacation, you can have remote monitor security cameras, automated watering system, and even a robot to assist with harvesting the vegetables. Also, make the windows a little more durable and add some limit and reed switches so that nothing goes wrong.
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education
I'm sure you know but there are mechanical spring activated lifts hat can be set to open and shut windows by temperature. No need for power. I've been working on sustainable farms for 20 years. Lots of people use them and they are cheap like 30 for the smaller one. Anyways thanks for sharing.
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I'm sure you know but there are mechanical spring activated lifts hat can be set to open and shut windows by temperature. No need for power. I've been working on sustainable farms for 20 years. Lots of people use them and they are cheap like 30 for the smaller one. Anyways thanks for sharing.
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Dr
This problem was solved back in the days of relay logic. But always good to see someone try something different some people even use a container that thermally expands and pushes open the vent, then close the vent whew the container thermally contraction.
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This problem was solved back in the days of relay logic. But always good to see someone try something different some people even use a container that thermally expands and pushes open the vent, then close the vent whew the container thermally contraction.
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sad
what's the point of an automatic greenhouse if you don't have an automatic watering system which is the easiest part of the whole project and the most essential, also the windows should be controlled by the humidity sensor not by sending bytes manually
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what's the point of an automatic greenhouse if you don't have an automatic watering system which is the easiest part of the whole project and the most essential, also the windows should be controlled by the humidity sensor not by sending bytes manually
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Emerson
An automated watering system is nice because it keeps the water off the leaves (where it encourages fungal problems. I still visit my greenhouse multiple times a day, but I don't have to spend five minutes filling up watering cans before I do.
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An automated watering system is nice because it keeps the water off the leaves (where it encourages fungal problems. I still visit my greenhouse multiple times a day, but I don't have to spend five minutes filling up watering cans before I do.
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