Circuit Documentation
Summary
The circuit in question is designed to interface multiple PIR (Passive Infrared) sensors and IR (Infrared) sensors with a Raspberry Pi 4B microcontroller. The purpose of this circuit is likely to detect motion and/or presence in different zones, which can be used for security systems, automation, or environmental monitoring. The Raspberry Pi 4B serves as the central processing unit, collecting signals from the sensors and potentially triggering a buzzer based on certain conditions.
Component List
PIR Sensors
- Component Name: PIR sensor
- Description: A sensor that detects motion by measuring changes in the infrared levels emitted by surrounding objects.
- Pins: VDD, SIG, GND
Buzzer
- Component Name: buzzer
- Description: An electromechanical component that emits sound when an electrical signal is applied.
- Pins: PIN, GND
Raspberry Pi 4B
- Component Name: Raspberry Pi 4B
- Description: A small single-board computer with a broad range of input/output options.
- Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN, ETH, HDMI 0, HDMI 1, CAMERA, AV
IR Sensors
- Component Name: ir sensor
- Description: A sensor that detects infrared light radiating from objects in its field of view.
- Pins: out, gnd, vcc
Wiring Details
PIR Sensors
- VDD: Connected to Raspberry Pi 4B 5V
- SIG: Connected to individual GPIO pins on Raspberry Pi 4B (GPIO23, GPIO17, GPIO27, GPIO22)
- GND: Connected to Raspberry Pi 4B GND
Buzzer
- PIN: Connected to Raspberry Pi 4B GPIO24
- GND: Connected to Raspberry Pi 4B GND
Raspberry Pi 4B
- 5V: Provides power to all PIR and IR sensors
- GND: Common ground for all components
- GPIO Pins: Used to receive signals from PIR sensors (GPIO23, GPIO17, GPIO27, GPIO22) and to control the buzzer (GPIO24). Also, GPIO pins (GPIO5, GPIO6, GPIO26) are used to receive signals from IR sensors.
IR Sensors
- vcc: Connected to Raspberry Pi 4B 5V
- out: Connected to individual GPIO pins on Raspberry Pi 4B (GPIO5, GPIO6, GPIO26)
- gnd: Connected to Raspberry Pi 4B GND
Documented Code
Raspberry Pi 4B Code (sketch.ino)
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
import RPi.GPIO
Note: The provided code snippet is incomplete and does not include any specific functionality. It appears to be a template with placeholders for setup and loop functions, which are typical in Arduino sketches. However, the import RPi.GPIO statement suggests that the intended code should be written in Python for the Raspberry Pi, as RPi.GPIO is a Python library for GPIO interface with Raspberry Pi. The code needs to be developed further to implement the desired behavior based on the input from the PIR and IR sensors.
Additional Documentation (documentation.txt)
No additional documentation code was provided.