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I believe it was John Adams that once said, "every problem is an opportunity in disguise."  This, as it turns out, is great advice for those wanting to come up with a new Arduino project.  When I first started to look for project ideas, I was just trying to make use of what I have and create something that looked cool.  But now that I am looking for problems to solve, well, the possibilities are endless!  Take my job for starters.  I am a logger.  If there is one in ...
sasquatch84

New Project

Posted by sasquatch84 Sep 2, 2017
Well, although there is a small bug to figure out with my last project, I'm going to go ahead and chalk that one up as a win.  Now I have some momentum, I just want to keep going as that project took forever to get started on!  I don't have a specific project in mind.  I just want to keep learning and pushing my limits.  I have always been a bit of a hoarder and so I thought I would post a list of old electronics on here and see if anyone can suggest a project that woul ...
So here's a schematic of the build.  I'm not sure I made the schematic very accurate when it came to the relay since on the schematic I was confused as to the purpose of each connection.  In real life, I have the relay powered off of the 5 volt converter, and pin 8 on the Nano controlling it.  I have the ground for the solenoid running through the relay.  Any questions/ideas why the arduino is acting funny (see last post)? ...
sasquatch84

One Last Thing

Posted by sasquatch84 Aug 31, 2017
Ok so the unit is working great.  There's just one small thing.  When I was testing different sketches out, I noticed that when the code said "HIGH" it would make the relay pin "LOW" and vice versa.  I tried a few different sketches and uploaded and re-uploaded and it just kept on doing this.  To add More confusion, I tried the classic "Blink" sketch and connected the relay to pin13, but when I did, the LED would light up at the appropriate time, but then when it went low, th ...
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sasquatch84

Tada!

Posted by sasquatch84 Aug 31, 2017
Well, it works!  I glued everything into an old soldering iron container and added a little extra heatsink onto the 7805.  I may be a terrible gardener, but at least those strawberries will be well watered! Thanks to everyone who helped me out on here.  I'm brand new to the site and I have enjoyed the experience and the community.  Here's to many more projects! ...
sasquatch84

Let's try this again

Posted by sasquatch84 Aug 30, 2017
Ok, so I grabbed another Nano and got it all wired up like the last one.  I soldered a diode directly onto the solenoid valve contacts.  Maybe I should have just put it on the circuit board?  Anyone think I should?  Let me know.  Also, I tried my hand at making a schematic.  Let me know if this makes sense. I'm not plugging anything in until I get at least a little feedback on here. (gulp!) ...
sasquatch84

Aaaaaargh! 

Posted by sasquatch84 Aug 29, 2017
So I got everything hooked up/soldered together and it was all working great.  The relay was clicking on when I wanted it to.  The power supply had everything going without any smoke or flames.  And then I hooked up the solenoid valve to the relay.  It clicked on once and then the relay stopped working.  The light on the Nano is still on and yet the relay light is no longer blinking.  I guess I should see if there is any voltage coming from pin 8 (the one hooked up ...
sasquatch84

Power Supply for Nano

Posted by sasquatch84 Aug 29, 2017
So I am planning on using the Arduino nano for the brains of my garden watering project.  I have a 12 volt power converter I kept from an old set of boot dryers that fell apart years ago.  I know that the Nano can handle the volts but seeing as it's at the higher end of the acceptable range and I want to leave this thing plugged in 24/7, I think I'll use one of my 7805's.  And since they lower voltage to 5 volts, I assume I can just run the power straight into the 5v pin.  ...
sasquatch84

Et Voila

Posted by sasquatch84 Aug 28, 2017
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Few things make me more upset than losing something.  I had ordered an adafruit 12volt solenoid valve for my automatic garden watering project but was so busy for the first part of the summer with work that I just put it on the shelf.  Now I have time to work on the project and I cannot, for the life of me, find the darn thing anywhere.  And it really could be anywhere between having a wife that is constantly (although unintentionally) hiding things on me and four sons under the a ...
Ok so I finally got some time to myself (difficult because I have 4 kids going on 5 under 7) to play around with this project.  I got my Uno out and my ebay-special 4 relay module.  I figured out how it works and what the little picture on the relay meant as far as which one is normally open and which one is normally closed.  I have been reading up on different ways to get the Arduino to keep track of time and turn/off for long periods of time.  While doing this reading I a ...
This is the first entry of my first project since joining here.  I work a lot and would like to have my garden watered by my Arduino.  I want the water to turn on every morning at the same time for the same duration.  As far as parts go, I have an adafruit water valve, 4 module relay, Arduino Uno for prototyping and a nano for the finished product.  It appears my first job is to figure out how to make the Arduino activate the solenoid at the same time.  I could ise a ...

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