Sensor probe LED change

I believe that you may very well need some level of amplification for the signal from the probes. An op-amp comes to mind. A given level of moisture might not provide a resistance low enough to pull in the relay. An op-amp could provide a wide range of gain, such that you would be able to calibrate the instrument, by using a variable trimpot to make the gain adjustment.

Thank you... op-amp reading just moved to the top of my list

"Start with somethin simple", I had that very same idea. But I'm sure you're finding out just as I did that with electronics, Nothing is as simple as it would first appear! Then, that's half the fun. " I wanna make a (awesome thing), and I need to use a (crazy gizmo that I haven't studied yet) to get it to work right. Oh crap I have to drive the (crazy gizmo) with a (nifty component I've read a lot about but haven't tried cramming it into a breadboard yet)! And what the.... how is a current supposed to sink?! I'm not gonna.. even babies know you don't put electronics in WATER! What the heck does that mean?" And so on and so forth in a continuous pattern as such. But the great thing is, you learn A LOT like, all the time so it's worth it.. x^)

Many plants the leaves droop when they want more water.

Yes, im not trying to keep plants properly watered, i just needed some "thing" to aim for.. i found in light computer programming the best way for me to personally learn is decide on a thing, then make it happen .. keep in mind i only decided to learn electronics roughly 7 days ago.. pretty wet behind the esrs

*ears

Wow! Just 7 days?? Well then you're doin pretty good lol! Hey I was looking into some stuff to help you out with this circuit- if this is a starter project you wanna try you've got lots of options! I posted a similar kind of op-amp circuit today and wrote a decent report on it. Check it out if you like. I'd like to help you out wherever I can, just lemme know..

Excellent, i will be sure to check it out.. thank you.. to be clear my 7 days is probably more than the average person. I have a very boring job. Roughly 36 hours a week to read and 4 hours of actual work lol

Pfff- where do I sign up? Lol! So do you have real components and stuff to mess around with at home?..

Yup.. bought a bread board and an "assortment" of pie e

*pieces.. damn phone .. i have many hobbys and im a jump in with both feet kind of guy.. actually it was my RC hobby that brought me here. I bought a new transmitter and oddly it didnt have a LED that comes on when you power up the unit. I ordered an LED to remedy the problem. That lead me to resistors. From there is was all over except the waiting for my breadboard and components to arrive.. a wait that lead me to this program.

Good, good. Simulators are great for many reasons, I find this app invaluable- but physical experimentation is tops imo! Learning on your own is tough I know, it's challenging but absolutely rewarding. Even in my short time of study, looking back on myself only a year ago it's pretty funny how little I knew! But then look at the flipside- it's crazy how much is learned in that same time. And not just on any one subject- now I know more about electronics, mathematics, physics- studying things just kinda starts to take over, and happen naturally. I mean, I find myself reading up on particle physics "for fun"! God, why?! Because electrons are particles - obviously! Ugh..

I know it.. just wish i looked at things this way 14 years ago when i dropped out of school. Programming computer games for fun has actually helped with this. That and the playstation game Little Big Planet. Little Big Planet gives you a large empty space to fill it with whatever you want. Some of which are electronic components. You want to add LED's to your level you can. Want to hook them up to timers? Go ahead. Switches with and gates, or gates, etc. It covers alot of circuit, but it doesnt cover power sources, resisters, transformers, capacitors, or any of that. There was alot of things that when i arrived at electronics didnt seem as foreign as they probably did for alot of other people when they first got into electronics.. it is interesting how inter woven my hobbys seem to be. Except the odd ones of course, such as beekeeping.. really nothing thats similar to that one lol