This document provides a detailed overview of a circuit designed to interface various components with an Arduino Nano microcontroller. The circuit includes communication interfaces, solid-state relays (SSRs) for controlling power loads, a gas sensor, a Hall effect sensor for current measurement, a CAN bus interface for automotive communication, and a Nextion touch LCD for user interaction. The circuit is powered by an AC-to-DC converter module and a step-down voltage regulator. The Arduino Nano serves as the central processing unit, managing input/output operations and communication protocols.
D0/RX
connected to Nextion LCD RX.D1/TX
connected to Nextion LCD TX.D2-D7
connected to SSR-10A relays for control signals.D8-D13
used for interfacing with 74HC405L and CAN BUS module.A0-A3
connected to various sensors and modules.A4 (SDA)
and A5 (SCL)
used for I2C communication with Adafruit MCP9600.A6
connected to MQ-5 Gas Sensor analog output.5V
and GND
used for powering components and establishing common ground.SDA
and SCL
connected to Arduino Nano for I2C communication.VIN
connected to 5V supply.GND
connected to common ground.+
and -
pins likely used for thermocouple connections.VCC
connected to 5V supply.GND
connected to common ground.Analog out
connected to Arduino Nano A6.+
connected to 5V supply.-
connected to common ground.S
connected to Arduino Nano A2.TX
connected to Arduino Nano D1/TX.RX
connected to Arduino Nano D0/RX.VCC
connected to 5V supply.GND
connected to common ground.+
control pins connected to Arduino Nano D2-D5.-
control pins connected to common ground.IN
connected to Arduino Nano D7.VCC
connected to 5V supply.GND
connected to common ground.IN+
and IN-
connected to actodc 12V output and ground.OUT+
and OUT-
providing regulated voltage to components.CS
, SI
, SO
, SCK
connected to Arduino Nano for SPI communication.VCC
connected to 5V supply.GND
connected to common ground.H
and L
connected to CAN bus network.void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
No additional documentation provided in the code file.
Note: The provided information is based on the input data. Some components, such as the 74HC405L, were listed without pin details, and their connections could not be documented. The actual circuit functionality and additional code details are not provided and would be necessary for a complete understanding of the circuit's operation.