First of hopefully many DIY arduino projects. I will show you how to build an automatic watering system. It will water plants for you when you not there. Although project is based on Arduino Nano there is no problem to build it with Arduino UNO.
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Step 1: Watch the Video
Watch whole video. It will take you through nearly the whole project. You will find additional resources in the following steps.
Step 2: Complete Parts
These are necessary parts and sample links where to get them.
Arduino Nano v3.0 https://www.ebay.com/itm/201601613488?rmvSB=true
SoilWatch 10 - soil moisture sensor https://pino-tech.eu/sw10
1602 LCD with I2C interface https://www.ebay.com/itm/221439853893?rmvSB=true
12V Peristaltic pump https://www.ebay.com/itm/272166574249?rmvSB=true
1/8inch or 3mm internal diameter PVC tubing https://www.ebay.com/itm/231044249185?rmvSB=true
1/8inch or 3mm connector https://www.ebay.com/itm/391461040363?rmvSB=true
breadboard - optional
2x100nF ceramic capacitor
1x100uF electrolytic capacitor
3x100k ohm resistor
DC Socket 5.5mm/2.1mm https://www.ebay.com/itm/322340611476?rmvSB=true
2x tact switches https://www.ebay.com/itm/112173300502?rmvSB=true
female/female jump wires
straight pin headers
Terminal Block Screw Connector 2-way
Terminal Block Screw Connector 3-way
9V power supply - at least 1A
box 100x80x40mm cotton buds/swabs - check locally first. this may work but I can't guarantee https://www.ebay.com/itm/122848573824?rmvSB=true
Step 3: Assemble
See attached schematics and pictures of assembled boards. If you are not comfortable with soldering build just breadboard version of the project.
Step 4: Upload Code
Upload sketch plant_saver.ino to your Arduino board. Don't forget to install a LiquidCrystal_I2C library.
Schematics available in Fritzing format but breadboard part is not done.
SoilWatch 10 part for Fritzing.
Step 5: Enjoy Your Automatic Watering System
Play, modify and adapt to your needs. You can tweak Arduino sketch to suit your plant, soil type and pot size. Hope you enjoyed the project.
Check out my Youtube channel: http://www.youtube.com/user/pinolec