Circuit Documentation

Summary

The circuit in question is designed to interface a Raspberry Pi 4B with a variety of sensors and actuators, including a SparkFun Soil Moisture Sensor, an IR sensor, a GPS NEO 6M module, and a Servomotor SG90. The Raspberry Pi 4B serves as the central processing unit, controlling and communicating with the connected devices. The soil moisture sensor is used to measure the water content in the soil, the IR sensor for detecting objects or movements, the GPS module for obtaining geographical location, and the servomotor for actuating movements.

Component List

SparkFun Soil Moisture Sensor

• Pins: VCC, GND, SIG
• Description: A sensor that measures the volumetric content of water in the soil and outputs an analog signal to the SIG pin.

Raspberry Pi 4B

• Pins: 3V3, 5V, Multiple GPIOs, GND, and others
• Description: A powerful microcomputer capable of running a full Linux distribution and interfacing with various peripherals through its GPIO pins.

IR Sensor

• Pins: out, gnd, vcc
• Description: An infrared sensor used for object detection or distance measurement.

GPS NEO 6M

• Pins: VCC, RX, TX, GND
• Description: A GPS module capable of providing accurate geographical location data.

Servomotor SG90

• Pins: SIG, VCC, GND
• Description: A small and lightweight servo that is suitable for projects requiring simple motion.

Wiring Details

SparkFun Soil Moisture Sensor

• VCC: Connected to Raspberry Pi 4B 3V3
• GND: Connected to Raspberry Pi 4B GND
• SIG: Connected to Raspberry Pi 4B GPIO4

Raspberry Pi 4B

• GPIO4: Connected to SparkFun Soil Moisture Sensor SIG
• GPIO12: Connected to Servomotor SG90 SIG
• GPIO23: Connected to IR Sensor out
• GPIO14: Connected to GPS NEO 6M RX
• GPIO15: Connected to GPS NEO 6M TX
• 5V: Connected to Servomotor SG90 VCC, IR Sensor vcc, and GPS NEO 6M VCC
• GND: Connected to Servomotor SG90 GND, IR Sensor gnd, and GPS NEO 6M GND

IR Sensor

• out: Connected to Raspberry Pi 4B GPIO23
• gnd: Connected to Raspberry Pi 4B GND
• vcc: Connected to Raspberry Pi 4B 5V

GPS NEO 6M

• VCC: Connected to Raspberry Pi 4B 5V
• RX: Connected to Raspberry Pi 4B GPIO14
• TX: Connected to Raspberry Pi 4B GPIO15
• GND: Connected to Raspberry Pi 4B GND

Servomotor SG90

• SIG: Connected to Raspberry Pi 4B GPIO12
• VCC: Connected to Raspberry Pi 4B 5V
• GND: Connected to Raspberry Pi 4B GND

Documented Code

IR Sensor Microcontroller Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Note: The provided code for the IR sensor microcontroller is a template with empty setup and loop functions. This code needs to be populated with the logic for initializing the sensor and handling the data in the loop function.

Additional Documentation (documentation.txt)

No additional documentation was provided for the IR sensor microcontroller.

End of Documentation