AutoGarden

General Purpose Transistor PNP

USB-A to Micro-USB Cable

Resistor 220 ohm

Male/Male Jumper Wires

LED (generic)

4xAA battery holder

Arduino MKR1000

SparkFun Soil Moisture Sensor (with Screw Terminals)

Pump

<h3 >Introduction</h3>Farming and food production is a major aspect of society and everyday life is impacted directly by it. We are looking to create a small scale model monitoring and pumping system to help maintain the water level in plants grown in homes. Future additions can be atmospheric water and temperature monitoring. The project is designed to be a solution for lost crops, at least on a small scale, by carefully balancing the water levels within plants to ensure no loss due to over or under watering.<h3 >Process/Steps</h3>Step 1: Create the CircuitFollowing the linked Fritzing Diagram or the Breadboard image to putting together the circuit.<div id="gallery"><img id="gallery" src=https://projects.arduinocontent.cc/b7da540f-28be-4819-ad58-b69f65c0db9e.png /><figcaption>Device Breadboard Wiring Schematic</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/8df386de-be89-44ab-ad38-6fb3ec990b18.png /><figcaption>Device Electrical Schematic</figcaption></div>Step 2: Cloud InteractionCreate things on IoT Cloud to setup the dashboard for the cloud connection<div id="gallery"><img id="gallery" src=https://projects.arduinocontent.cc/b3783c0a-e111-4de1-9530-78b6a0f2c3c7.PNG /><figcaption>List Of Variables</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/08b7fc40-dfc9-47ed-ad86-e624a5b1bfef.PNG /><figcaption>Dashboard Layout</figcaption></div>Start by creating the "thing" on the Arduino IoT Cloud. Then create your three variables; Information is given. View the dashboard image to see if the variable is "read only" or "read/write." Finally create the dashboard and link variables to the appropriate widgets.Step 3: Code [.ino]Copy the following code into the Arduino IDE...<pre ><code >/* Sketch generated by the Arduino IoT Cloud Thing "AutoGarden" https://create.arduino.cc/cloud/things/36881e31-0b15-4ae9-ad3d-c0bee1f0ea06 Arduino IoT Cloud Variables description The following variables are automatically generated and updated when changes are made to the Thing int moisture; bool RunPump; Variables which are marked as READ/WRITE in the Cloud Thing will also have functions which are called when their values are changed from the Dashboard. These functions are generated with the Thing and added at the end of this sketch. */ #include "thingProperties.h" #define PumpRunner 0 // set the pin for the pump int val = 0; // returned value from soil moisture sensor int soilPin = A0; // pin for reading from the soil moisture sensor int soilPower = 7; // pin for powering the the soil moisture sensor. int setMLevel; void setup() { // Initialize serial and wait for port to open: Serial.begin(9600); // This delay gives the chance to wait for a Serial Monitor without blocking if none is found delay(1500); // Defined in thingProperties.h initProperties(); // Connect to Arduino IoT Cloud ArduinoCloud.begin(ArduinoIoTPreferredConnection); /* The following function allows you to obtain more information related to the state of network and IoT Cloud connection and errors the higher number the more granular information you’ll get. The default is 0 (only errors). Maximum is 4 */ setDebugMessageLevel(2); ArduinoCloud.printDebugInfo(); pinMode(PumpRunner, OUTPUT); pinMode(soilPower, OUTPUT); digitalWrite(soilPower, LOW); } void loop() { ArduinoCloud.update(); // Your code here moisture = readSoil(); moisture = map(moisture, 0, 700, 0, 100); Serial.println(moisture); digitalWrite(PumpRunner, LOW); delay(1000); if(moisture <= setMLevel && moisture >= 10){ RunPump = true; } if(RunPump){ digitalWrite(PumpRunner, HIGH); delay(1000); // pump takes a second or two to start up digitalWrite(PumpRunner, LOW); delay(1000); // one second delay so water can settle RunPump = false; } delay(1000);// remaining delay, go to value minus 3010 } int readSoil(){ digitalWrite(soilPower, HIGH); delay(10); val = analogRead(soilPin); digitalWrite(soilPower, LOW); return val; } </code></pre>Step 4: Properties Code<pre ><code >// Code generated by Arduino IoT Cloud, DO NOT EDIT. #include <ArduinoIoTCloud.h> #include <Arduino_ConnectionHandler.h> const char THING_ID[] = "36881e31-0b15-4ae9-ad3d-c0bee1f0ea06"; const char SSID[] = SECRET_SSID; // Network SSID (name) const char PASS[] = SECRET_PASS; // Network password (use for WPA, or use as key for WEP) void onSetMLevelChange(); void onRunPumpChange(); int moisture; int setMLevel; bool RunPump; void initProperties(){ ArduinoCloud.setThingId(THING_ID); ArduinoCloud.addProperty(moisture, READ, ON_CHANGE, NULL); ArduinoCloud.addProperty(setMLevel, READWRITE, ON_CHANGE, onSetMLevelChange); ArduinoCloud.addProperty(RunPump, READWRITE, ON_CHANGE, onRunPumpChange); } WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS); </code></pre>Step 5: Set Up Internet ConnectionIn the "Secret" tab on the Arduino Editor, set your wireless network ID and password. Test and ensure that your device properly connects to the cloud.<h3 >Risks</h3>There are a couple risks that are associated with running this project.<ul ><li >The possibility of short circuiting: usage of water in this project poses a hazard and as such testing will likely be done as a “dry run.”</li></ul><ul ><li >The project results may not accurately work, as there is the potential to have inconsistent sensor readout or an inaccurate interpretation of the results.</li></ul>

AutoGarden_mar29a.zip

Breadboard Layout

Electronic Sketch

AutoGarden

Automatic garden watering system with the ability to read moisture levels in soil and pump water to the plants, with cloud monitoring