Raspberry Pi-Controlled Weight Measurement and Object Detection System with Actuation and Motion Control

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Circuit Documentation

Summary

The circuit in question appears to be a complex system involving various sensors, actuators, a microcontroller (Arduino Uno R3), a single-board computer (Raspberry Pi 4B), power management components, and motor drivers. The system is designed to interface with a load cell using an HX711 bridge sensor interface, control servos and DC motors, and manage power through a combination of a solar panel, charge controller, and battery. The circuit also includes safety and control elements such as a rocker switch, breakers, and an ATS (Automatic Transfer Switch).

Component List

HX711 - Bridge Sensor Interface

A precision 24-bit analog-to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor.

Load Cell - Red/white/black/green

A type of transducer that is used to create an electrical signal whose magnitude is directly proportional to the force being measured.

LJ18A3-H-ZBX Inductive Proximity Sensor

A non-contact sensor used to detect the presence of metal objects.

Inductive Sensor

Another type of non-contact sensor that detects metallic objects without requiring physical contact.

Arduino Uno R3

A microcontroller board based on the ATmega328P, with digital input/output pins, analog inputs, and various other features for building electronic projects.

Servo (2 instances)

A rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity, and acceleration.

Raspberry Pi 4B

A small single-board computer with a broad set of GPIO pins, capable of performing various computing tasks.

Rocker Switch

An on-off electrical switch that rocks (rather than trips) when pressed.

DC Motor (2 instances)

An electric motor that runs on direct current electricity.

POWER SUPPLY 12V 5AMP

A power supply unit that provides 12V and up to 5A of current, suitable for powering various components in the circuit.

power 220v

Represents the main AC power source, typically at 220V.

Terminal Block

A modular, insulated block that secures two or more wires together.

USB-C to Laptop

A cable used to connect USB-C devices to a laptop, likely for programming or power.

L298N DC motor driver

A high-power motor driver capable of driving up to two DC motors.

ld1117v33 voltage regulator (2 instances)

A low-dropout voltage regulator that provides a fixed output voltage with a low dropout voltage and output current up to 800mA.

Raspberry pi power supply

A dedicated power supply for the Raspberry Pi, providing the necessary voltage and current for stable operation.

Transmission Tower

Likely a representation of a communication tower in the system, possibly for wireless data transmission.

Inverter

A power electronic device or circuitry that changes direct current (DC) to alternating current (AC).

breaker (2 instances)

An automatic electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

solar panel

A panel designed to absorb the sun's rays as a source of energy for generating electricity.

ATS (Automatic Transfer Switch)

An electrical switch that switches a load between two sources, such as between mains power and emergency power.

Charge Controller

A device that regulates the voltage and current coming from the solar panels going to the battery.

12V 200Ah Battery

A rechargeable battery with a voltage of 12V and a capacity of 200Ah, used for energy storage.

Extension

Likely a representation of an extension of the circuit or additional functionality.

Wiring Details