All-in-One Arduino PCB Board Design

(This project is being managed here: Project Repository)

The All-in-One Arduino board is engineered to help users run multiple projects simultaneously and efficiently. Anyone who frequently builds with Arduino knows how challenging power management can be. When you connect numerous components to a standard Arduino, the internal 5V or 9V regulators often struggle to deliver enough power, forcing you to test parts one by one to avoid inaccurate results. In contrast, this robust board allows you to connect three or more high-load components—such as multiple stepper motors, fans, or light bulbs—at the exact same time without losing performance.

To support various power requirements, the board delivers a versatile voltage range from 5V up to 24V. It features dedicated headers and terminal blocks to keep your wiring clean and organized. Compatible with the Arduino Nano, this board enables you to connect:

1. 2 DC motors (operating from 9V to 24V)
2. 2 Servo motors (operating from 5V to 9V)
3. 2 Stepper motors
4. 2 Potentiometers
5. 1 Serial device (such as a Bluetooth tool or any RX/TX communication module)
6. 1 I2C device (such as display modules or SCL/SDA sensors)
7. 
   

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Working Description of the Board:

1. L298 IC

It is an IC that drives high-power motors. The high voltage and high current is responsible to drive loads like relays, solenoids, and different types of motors. It has an operating voltage range between +5V to +46V but its maximum supply voltage limit is 50V. The power dissipation of this IC is 25W.

1. A4988 Stepper Motor Driver

It is a micro-stepping motor driver that has a built-in translator. It usually operates those bipolar stepper motors that have an operation mode of full, half, eighth, sixteenth, and quarter. The output voltage limit of this driver is 35V.

1. LM7805 and LM7809 Voltage Regulator

These are both voltage regulator IC that is commonly used to regulate voltages. In the case of LM7805; for variable input voltages, it provides a constant 5V. While in the case of LM7809 provide voltages of 9V.

Schematic Diagram:

In the schematic diagram, there is an Arduino Nano at the leftmost side connected to the terminal. In the center, there is a motor driver IC that is L298. Then there are connectors, diodes, and capacitors attached to the circuitry. On the bottom left side, there are two A4988 Stepper motor drivers.