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Old 01-12-2019, 07:13 AM
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Default Cheap options for telemetry



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I am looking for cheap options to gather and transmit information that DO NOT REQUIRE wifi. I do not have passion to connect hundreds or thousands of feet of cable but I am concerned that wifi can be scrambled easily. I want to build a greenhouse. It will require temperature sensors, humidity sensors, lighting sensors, the ability to turn pumps, lights and CO2 tanks on and off...as well as the typical video cam and sound stuff. Is there any way that this can be done with network hubs/routers? Maybe connected to a raspberry pi or arduino, the micro pc's gather and processing data. Am interested in opinions here, with a bend towards low cost and flexible.
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Old 01-12-2019, 07:32 AM
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With a 433hz Arduino module you could go out to 300 meters line of sight.
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Old 01-12-2019, 07:57 PM
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For that particular situation, a greenhouse monitor and control system, a wireless agricultural weather station feeding data to a single board computer which controls smart home type valves and switches I believe would work well and not too expensively

Might also go the DIY route with computer control hobby RC system components to activate relay valves and switches. It would require an investment in batteries and battery charger to power the solenoid valves if they are separated by much distance from one another. If the valves and switches can be grouped fairly closely together they can be wired to a solar power system.

And there are a few medium and small scale systems available, but they are pretty expensive. I think DIY would be the way to go, possibly with professional software.

Some resource links:
https://www.electronicproducts.com/S...roduction.aspx
https://www.ambientweather.com/agwest.html
https://ameridroid.com/
https://www.smarthome.com/
https://www.amazon.com/s/ref=nb_sb_n...olenoid+valves
https://www.rcplanet.com/rc-radio-system/

Just my opinion.
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Old 01-13-2019, 02:59 PM
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As a sidebar, I couldn't help but notice that CO₂ is our friend and grows food rather than leaving a carbon footprint (my apology for the intrusion).
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Old 01-19-2019, 04:01 AM
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Quote:
Originally Posted by Eddie_T View Post
As a sidebar, I couldn't help but notice that CO₂ is our friend and grows food rather than leaving a carbon footprint (my apology for the intrusion).
Intrusion welcome and apology accepted!
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Old 01-19-2019, 04:29 AM
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I'm sure the pot grower people have really good control systems. Look in the trade journals. Is High Times still in print?
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Old 01-20-2019, 02:00 AM
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If you want to go the DIY route then I would recommend Random Nerd Tutorials.

https://randomnerdtutorials.com/projects/
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Old 03-30-2019, 01:54 AM
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You might want to look into home automation, like the smarthome site.

Otherwise what you are describing would normally be industrial automation or SCADA. There are surplus controllers that can be obtained on eBay and programmed to not only provide remote control, but operate as timers and temperature controllers wth PID feedback.


These controllers can also be used with various 900 Mhz ISM radios so that you can link data for a mile or more.

Video would require a 5 GHz link with dish antennas.

Sent from my SM-T350 using Tapatalk
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Old 03-30-2019, 07:22 PM
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start at the Arduino Project Hub.

connect multiple sensors with LoRa, which is way off topic here.
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