ArduinoPlantMonitor

A plant monitoring system based on Arduino.

Sensors

1. Arduino UNO
2. LCD
3. DHT11
4. LED-Matrix
5. moisture sensor
6. DC battery (9V)
7. photocell
8. RTC
9. SD card adapter

8. stepper motor (turns plant depending on sunlight direction, 24h)
9. bluetooth / WIFI / cable for data transmission, e.g. temp/moisture gradient/graph (eval. and displayed on mobile device/laptop/pc)
10. RPi + webcam for timelap
11. SD card for data storage/buffer + sound? 11.1 loudspeakers/amplifier + sound sensor
12. PIR Motion Sensor (generic)

Module/Hardware unit pinout

Soil Moisture Sensor for Arduino (ME110)

Moisture Sensor pin	Arduino pin
+	5V
-	GND
S	(any analog output pin)

03.0V when 5V power supply; 01.7V when 3.3V power supply

LCD 1602 Module

LCD pin	Arduino Mega pin
RS	D12
Enable	D11
D4	D5
D5	D4
D6	D3
D7	D2

Additionally, wire a 10k pot to +5V and GND, with it's wiper (output) to LCD screens VO pin (pin3). A 220 ohm resistor is used to power the backlight of the display, usually on pin 15 and 16 of the LCD connector

DHT11 (three pins)

DHT11 pin	Arduino Mega pin
Signal	D7
Vcc	5V
Ground	GND

MAX7219 Module (LED-Matrix)

MAX7219 pin	Arduino Mega pin
Vcc	5V
GND	GND
DIN	D51 (MOSI)
CS	D53 (SS/CS)
CLK	D52

Use library 'LedControl'!

Grove-BLE dual model v1.0

Grove BLE	Aduino Mega pin
GND	GND
VCC	5V (3.3V also possible?)
RX	D1 (TX)
TX	D0 (RX)

+3.3/+5.0VDC 50mA

Arduino Mega 2560 Pinout

Arduino pinout		Module pinout	Module/Hardware unit
Number	Name
0	RX	H	I
1	TX	H	I

MULTIPLEXER WITH ARDUINO

There are many different opportunity:

1. 8 channels multiplexer CD4051BE
2. 8 pin shift register 74HC595
3. 8-channel analog multiplexer/demultiplexer 74HC4051