DIY Arduino Programmable On/Off Timer Switch for Automation Hydroponics

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Simple and Easy timer module for automatic switching on and off for any device. easily available components. uses arduino nano microcontroller relay module, and 5V AC to DC power supply module.

change value RelayPin to whichever digital pin you use on the arduino.
change digitalWrite(relayPin,LOW) value for OFF time
change digitalWrite(relayPin,HIGH) value for ON time

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Great video, Thank You!! Make sure you have little-to-none, copper wire showing, at the screw terminals, it looks cleaner and less chance of arcing/shorting, due to lint or dust.

m.sawmill
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You can just use Blink code for ON/OFF timer.

jameelsheik
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Hi. Why i can't write thic code? I have problem "'relayPin' was not declared in this scope"

eskadron
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HI this is a very nice and simple video. Wonderful. If you can lower the initially recorded music that would be awesome for my headphone hearing!

srinivaschetlapalli
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I love your work. It inspired me in many ways! As for the topic I am writing about, do any ideas for a school auto alarm system as my graduating project? Useful video links would be awesome! Just power on/off at specific time with web support maybe. Thanks in advance!

energy
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Please show us the schematic!! You said it will be in the description

mxrkb
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Hi, could you put here alternative source or download link for the code ? I can´t download it for some reason..

janouroda
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Would anyone happen to have a schematic diagram, also ive got completed working code if anyone needs.

lucaspino
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1 second time period is too fast for a relay. It will wear out the contacts.

isotropicantenna
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Hello sir.
Can we set ondelay to 1min and off delay to 1 hour .... Will it work for large timings ???

adithyams
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Where can I get the schematic please???

DrZipZwan
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Can anyone tell me where is the schematic of the connection?

shirjanasaud
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Sir please can i get its schemetic diagram..

RachanaAlva
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Dear Sir I kindly requesting you to post another video on DIY Arduino Programmable On/Off Timer Switch for Automation Hydroponics with addition to manual setting of on/of option with LED Display.

mominumar
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Just use a 555 ic for this. You don't need to waste an Arduino for this

gahasitha