The document outlines the development of a smart garden system that utilizes weather data and wireless communication for efficient irrigation and monitoring. It discusses the architecture, components like Arduino and various sensors, and protocols for data transmission. Additionally, it includes details on configuration, cost analysis, and simulation for different plant watering needs.

1. Smart Garden
 Coratti Stefano coratti.s86@gmail.com
 Perri Massimo massimo.perri@yahoo.it
 https://github.com/mp-76/Smart-Garden
 https://github.com/CorattiS86/Smart-Garden
 http://www.slideshare.net/StefanoCoratti/smart-garden-62115754

2. Overview
1. What is Smart Garden ?
2. How to realize it ?
3. Building Costs and Consumption Costs
4. Configuration
5. Problems
6. Simulation

3. Functionalities
 Use of weather data as humidity,
temperature and pressure
 All wireless connections for communications
 Data are sent on the WEB
 Intelligent
watering

4. Technologies
 Wi-Fi module
ESP8266
 Arduino Mega
 ATMega328p
standalone
 Wireless 2.4GHz
Transmitter & Receiver
nRF24L01

5. Sensors & Attuators
 DHT11
Temperature & Humidity
 Hygrometer
Soil Moisture
 BMP180 GY68
Barometric Pressure
 Pump Water
capacity: 30 liter/hour

6. Plant Configuration
ET° x Crop coeff. x Density x Exposure x Planted Area x 2,36
Irrigation Efficency

7. Architecture
 Plant station #3 Plant station #2
 Plant station #1
 Master Control Unit

8. Master schema
3,3V
GND
GND
GND
GND
GND
3,3V
5V
12V
20k 10k
3,3V
PC

9. Plant Station schema
3,3V
GND
GND
GND
5V
12V

10. Master schema

11. Plant Station schema

12. Communication
 Plant station #3 Plant station #2
 Plant station #1
 Master Control Unit
 Radio modules

13. Protocols
Master
Control
Unit
Plant
Station
#1
Plant
Station
#2
Plant
Station
#3
Idle
1 s1 s 1 s 15 s1 s
 MCU sends packet in broadcast to each PSs
 PS#1 receives packet, wait 1 seconds then response to MCU
sending packet with own data
 PS#2 receives packet, wait 2 seconds then response to MCU
sending packet with own data
 PS#3 receives packet, wait 3 seconds then response to MCU
sending packet with own data
 Idle time where each station compute own calculus
loop

14. Protocols
Preamble Network
Address
Packet
Control
To From ID Flags Payload CRC
1
byte
3 to 5
byte
9
bit
1
byte
1
byte
1
byte
1
byte
0 to 28
byte
2
Byte
 RadioHead library
 Reliable Datagram
 Approximately 40 bytes packet

15. Protocols
Preamble Network
Address
Packet
Control
To From ID Flags Payload CRC
1
byte
3 to 5
byte
9
bit
1
byte
1
byte
1
byte
1
byte
0 to 28
byte
2
Byte
 RadioHead library
 Reliable Datagram
 Approximately 40 bytes packet
 Broadcast packet payload

16. Protocols
Preamble Network
Address
Packet
Control
To From ID Flags Payload CRC
1
byte
3 to 5
byte
9
bit
1
byte
1
byte
1
byte
1
byte
0 to 28
byte
2
Byte
 RadioHead library
 Reliable Datagram
 Approximately 40 bytes packet
Timestamp Data
Soil humidity
4
Byte
2
Byte
 Response packet payload

17. Internet of Things
 Wi-Fi
 Monitoring
by BLYNK
 Monitoring
by ThingSpeak

18. ThingSpeak  channels

19. ThingSpeak and Pushing box

20. BLYNK Setup
 BLYNK app for Android and iOS devices
 User interface easily to configure
 Timer for
timestamping  Gauge widgets for
weather data
 Indicator of
Soil humidity
for each plant

21. BLYNK Setup  Pin connection
 Initialization
 Library
 Authentication

22. Code
gathered data:
• pressure
• temperature
• humidity
• light

23. Code
 When is the right case to water ?

24. Code
 When is the right case to water ?

25. Code
 When is the right case to water ?

26. Code
 When is the right case to water ?

27. Code
 When is the right case to water ?

28. Code
 formula to predict whether it rains
 Compute how much water to use for watering

29. Simulation
 Simulation conditions: Temperature = 46° Humidity = 10%
Under such conditions each plant has a different need for water
 cactus
plant
 rosemary
plant
 tomato
plant

30. Any questions ???