Monitor the conditions like moisture, temperature and light for urban farming.
This is a project for my Applied Electronics module. I was task to design and build a Smart Urban Planter (SUP).
The requirements are as follows:
- LED 1 will light up when the device sense darkness.
- LED 2 will light up when the device sense higher temperature than normal.
- LED 3 will light when the water level indicator is abnormal.
- LCD will display Temperature Sensor’s reading
My own enhancements to the project:
- Toggle different readings in LCD.
- Display which LED is on in LCD.
Equipment & Materials:
| Meterials | Quantity |
|---|---|
| Arduino uno | 1 |
| LED | 3 (red, yellow, green) |
| Light Dependent Resistor (LDR) | 1 |
| Liquid Crystal Display (LCD) | 1 |
| Temperature Sensor (TMP36) | 1 |
| Resistor | 7 (4 220ohm, 2 10Kohm, 1 10Mohm) |
| Potentiometer | 1 |
| Capacitive Sensor (single exposed Wire) | 1 |
| Tactile Switch | 1 |
Schematic & Diagram:
LED and LCD uses 220ohm resistors. R1 is 10Mohm. R2 is 10Kohm. LDR uses 10Kohm to ground.
Block Diagram
I feel that I could have done batter on the block diagram. I felt that my personal enhancement was good enough to score me enough point to get a good grade, and as such i kind of slack off on the diagram.
https://create.arduino.cc/projecthub/rowan07/make-a-simple-led-circuit-ce8308
https://docs.arduino.cc/learn/electronics/lcd-displays
https://arduinogetstarted.com/tutorials/arduino-light-sensor
https://www.tutorialspoint.com/arduino/arduino_temperature_sensor.htm#:~:text=The%20Temperature%20Sensor%20LM35%20series,proportional%20to%20the%20Centigrade%20temperature.
https://www.arduino.cc/en/Tutorial/BuiltInExamples/Button