Greenhouse Controls
Code and design for autonomous planter.
Fusion 360 link: http://a360.co/2gzSERa
Web code: https://thimbleprojects.org/makalotai/126697
IFTTT instructions on logging the sensor data from the particle chip: http://wiki.steamlabs.ca/wiki/index.php/Send_Data_to_IFTTT_to_Spreadsheet_Example
Particle Arduino Code:
// This #include statement was automatically added by the Particle IDE.
#include "neopixel/neopixel.h"
// This #include statement was automatically added by the Particle IDE.
#include "spark-dallas-temperature/spark-dallas-temperature.h"
// This #include statement was automatically added by the Particle IDE.
#include "OneWire/OneWire.h"
int servoPin = D0; // Servo pin location.
Servo servo;
int angle = 0; // Servo position in degrees.
OneWire ds = OneWire(A2); // 1-wire signal on pin A2 for temperature
unsigned long lastUpdate = 0;
float lastTemp;
int moisture = 0;
int temperature = 0;
int ambientlight = 0;
String LightMode = "Automatic";
String VentMode = "Automatic";
#define PIXEL_PIN D2 //Set LED pixel PIN.
#define PIXEL_COUNT 8 //Set LED pixel COUNT.
#define PIXEL_TYPE WS2812 //Set LED pixel TYPE.
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);
void setup() {
Serial.begin(9600);
servo.attach(servoPin);
Particle.function("LMode", LMode); //Register cloud functions for web light and vent buttons.
Particle.function("VMode", VMode);
Particle.variable("moisture", &moisture, INT); //For web readout
Particle.variable("temperature", &temperature, INT);
Particle.variable("ambientlight", &ambientlight, INT);
pinMode(A0, INPUT); //moisture
pinMode(A2, INPUT); //temperature readout on Arduino destop app serial monitor
pinMode(A4, INPUT); //ambient light
pinMode(D2, OUTPUT); //LED mini lightstrip
pinMode(D3, OUTPUT); //LED Grow lights
Time.zone(-5); //Time zone. Update this for DST changes.
}
void loop() {
/* Serial.print("Moisture level: "); //For IDE readouts
Serial.println(analogRead(A0));
delay(1000);
Serial.print ("Ambient Light: ");
Serial.println(analogRead(A4));
Serial.print("Temperature (Celcius): ");
Serial.println(temp);
delay(1000); */
moisture = analogRead(A0); //For web readout
ambientlight = analogRead(A4);
temperature = lastTemp;
delay(1000);
String moisture = String(analogRead(A0));
Particle.publish("moisture", moisture, PRIVATE);
delay(5000);
String ambientlight = String(analogRead(A4));
Particle.publish("ambientlight", ambientlight, PRIVATE);
delay(5000);
if (LightMode == "Automatic") {
if (Time.hour() >=6 && Time.hour() <20 ) { //Run LEDs from 06:00-20:00 (16hrs).
TurnOnLED("");
}
if (Time.hour() >=20 || Time.hour() <6) { //Turn off LEDs from 20:00-06:00 (8hrs).
TurnOffLED("");
}
}
else if (LightMode == "On") { //For manual selection of LEDs
TurnOnLED("");
}
else if (LightMode == "Off") {
TurnOffLED("");
}
byte i; //This is the start of the OneWire temperature code
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius, fahrenheit;
if ( !ds.search(addr)) { // The order is changed a bit in this example. First the returned address is printed
Serial.println("No more addresses.");
Serial.println();
ds.reset_search();
delay(250);
return;
}
Serial.print("ROM =");
for( i = 0; i < 8; i++) {
Serial.write(' ');
Serial.print(addr[i], HEX);
}
if (OneWire::crc8(addr, 7) != addr[7]) { // second the CRC is checked, on fail, print error and just return to try again
Serial.println("CRC is not valid!");
return;
}
Serial.println(); // we have a good address at this point. What kind of chip do we have? We will set a type_s value for known types or just return
switch (addr[0]) { // the first ROM byte indicates which chip
case 0x10:
Serial.println(" Chip = DS1820/DS18S20");
type_s = 1;
break;
case 0x28: //This is the correct chip: DS18B20
Serial.println(" Chip = DS18B20");
type_s = 0;
break;
case 0x22:
Serial.println(" Chip = DS1822");
type_s = 0;
break;
case 0x26:
Serial.println(" Chip = DS2438");
type_s = 2;
break;
default:
Serial.println("Unknown device type.");
return;
}
ds.reset(); // this device has temp so let's read it. First clear the 1-wire bus
ds.select(addr); // now select the device we just found
// ds.write(0x44, 1); // tell it to start a conversion, with parasite power on at the end
ds.write(0x44, 0); // or start conversion in powered mode (bus finishes low)
// just wait a second while the conversion takes place. Different chips have different conversion times, check the specs, 1 sec is worse case + 250ms.
//You could also communicate with other devices if you like but you would need to already know their address to select them.
delay(1000); // maybe 750ms is enough, maybe not, wait 1 sec for conversion. We might do a ds.depower() (parasite) here, but the reset will take care of it.
present = ds.reset(); // first make sure current values are in the scratch pad
ds.select(addr);
ds.write(0xB8,0); // Recall Memory 0
ds.write(0x00,0); // Recall Memory 0
present = ds.reset(); // now read the scratch pad
ds.select(addr);
ds.write(0xBE,0); // Read Scratchpad
if (type_s == 2) {
ds.write(0x00,0); // The DS2438 needs a page# to read
}
Serial.print(" Data = "); // transfer and print the values
Serial.print(present, HEX);
Serial.print(" ");
for ( i = 0; i < 9; i++) { // we need 9 bytes
data[i] = ds.read();
Serial.print(data[i], HEX);
Serial.print(" ");
}
Serial.print(" CRC=");
Serial.print(OneWire::crc8(data, 8), HEX);
Serial.println();
int16_t raw = (data[1] << 8) | data[0]; // Convert the data to actual temperature because the result is a 16 bit signed integer, it should
if (type_s == 2) raw = (data[2] << 8) | data[1]; // be stored to an "int16_t" type, which is always 16 bits even when compiled on a 32 bit processor.
byte cfg = (data[4] & 0x60);
switch (type_s) {
case 1:
raw = raw << 3; // 9 bit resolution default
if (data[7] == 0x10) {
raw = (raw & 0xFFF0) + 12 - data[6]; // "count remain" gives full 12 bit resolution
}
celsius = (float)raw * 0.0625;
break;
case 0: // at lower res, the low bits are undefined, so let's zero them
if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms
if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
celsius = (float)raw * 0.0625; // default is 12 bit resolution, 750 ms conversion time
break;
case 2:
data[1] = (data[1] >> 3) & 0x1f;
if (data[2] > 127) {
celsius = (float)data[2] - ((float)data[1] * .03125);
}else{
celsius = (float)data[2] + ((float)data[1] * .03125);
}
}
if((((celsius <= 0 && celsius > -1) && lastTemp > 5)) || celsius > 125) { // remove random errors
celsius = lastTemp;
}
fahrenheit = celsius * 1.8 + 32.0;
lastTemp = celsius;
Serial.print(" Temperature = ");
Serial.print(celsius);
Serial.print(" Celsius, ");
Serial.print(fahrenheit);
Serial.println(" Fahrenheit");
String temperature = String(celsius); // Now that we have the readings, we can publish them to the cloud. Store temp in "temperature" string
Particle.publish("temperature", temperature, PRIVATE); // publish to cloud
delay(5000); // 5 second delay. This is the end of the OneWire temperature code.
if (VentMode == "Automatic") {
if (celsius <=27) { //Goldilocks Zone.
CloseVent("");
}
else if (celsius >27) { //Temperature is too hot, open Vent.
OpenVent("");
}
}
else if (VentMode == "Closed") { //For manual selection of Vent.
CloseVent("");
}
else if (VentMode == "Open") {
OpenVent("");
}
}
int OpenVent (String command) {
if (angle == 0) {
for (angle = 0; angle < 90; angle += 1) { //sweep from 0 to 90 degrees and hold OPEN
servo.write(angle); //angle of hold
delay(50); //Time (take .05 seconds for each degree)
}
}
}
int CloseVent (String command) {
if (angle==90) {
for (angle = 90; angle > 0; angle -= 1) { //sweep from 90 to 0 degrees and hold CLOSED
servo.write(angle);
delay(50);
}
}
}
int TurnOnLED (String command) { //Grow Light LED strip is turned ON.
digitalWrite(D3, HIGH);
strip.setPixelColor(0, 0,0,0); //Turn off mini LED strip.
strip.setPixelColor(1, 0,0,0);
strip.setPixelColor(2, 0,0,0);
strip.setPixelColor(3, 0,0,0);
strip.setPixelColor(4, 0,0,0);
strip.setPixelColor(5, 0,0,0);
strip.setPixelColor(6, 0,0,0);
strip.setPixelColor(7, 0,0,0);
strip.show();
}
/*int TurnOffLED (String command) { //Grow Light LED strip is turned OFF.
digitalWrite(D3, LOW);
strip.setPixelColor(0, 0,10,0); //Turn on mini LED strip as a night light. Each pixel is a different muted colour (0-255).
strip.setPixelColor(1, 15,10,0);
strip.setPixelColor(2, 15,0,0);
strip.setPixelColor(3, 0,10,20);
strip.setPixelColor(4, 15,15,20);
strip.setPixelColor(5, 0,0,25);
strip.setPixelColor(6, 0,25,0);
strip.setPixelColor(7, 15,0,15);
strip.show();
*/
int TurnOffLED (String command) { //Grow Light LED strip is turned OFF.
digitalWrite(D3, LOW);
strip.setPixelColor(0, 255,255,255); //Turn on mini LED strip as a night light. Each pixel is a brightest white(255).
strip.setPixelColor(1, 255,255,255);
strip.setPixelColor(2, 255,255,255);
strip.setPixelColor(3, 255,255,255);
strip.setPixelColor(4, 255,255,255);
strip.setPixelColor(5, 255,255,255);
strip.setPixelColor(6, 255,255,255);
strip.setPixelColor(7, 255,255,255);
strip.show();
}
int LMode (String command) {
LightMode = command;
}
int VMode (String command) {
VentMode = command;
}
