กลับไปหน้ารวมไฟล์
using-external-power-suppplies-with-arduino-explained-8a1536-en.md

So, I'm back to another tutorial! Well, today I'll show how to correctly use external power supply with Arduino!

Is Really simple, You will see:

Power supplies

Well, power supplies are used for every projects with Arduinos, like controlling Leds, Servo motors, Relays and more!

But sometimes, The Arduino can't be a power supply because of the project, like controlling more than 1 servo motor with the only 5v of the Arduino.

This example shows:

the example

So, this example shows that isn't possible to control 5 servo motors with Arduino as power supply, so what's our solution?

Think a bit more

The Solution

Yes! The solution is very simple, but you need to take care to not doing anything wrong.

So, our solution is using Batteries as external power supply!

Some external power supply examples images:

Computer power supply

Table Power Supply

Batteries

Well, there are some examples, but, how to use correctly them?

Check the Schematics!

EXPANDED TECHNICAL DETAILS

Professional Power Architecture

This project serves as a comprehensive guide to powering high-draw peripherals (Servos, Motors, LED strips) safely without destroying the Arduino.

  • Current Limitation Explained: Discusses why the Arduino's onboard 5V regulator can only handle ~500mA and how a 12-servo project can pull over 5 Amps, leading to heat damage or "Brown-outs."
  • Common Ground Requirement: Highlights the CRITICAL step of linking the Negative (-) terminal of the external power supply to the Arduino's GND pin, ensuring a shared reference voltage for control signals.

Hardware Implementation

  • Regulated vs. Unregulated: Explains the use of Buck Converters (LM2596) and LDO regulators to provide stable voltages for diverse hardware components while maintaining a safe environment for the MCU.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Using External power suppplies with Arduino explained!"
description: "Hey you, welcome to another tutorial! I'm Back to show how to use correctly any external power supply with Arduino! Enjoy!"
author: "bruno_opaiva"
category: ""
tags:
  - "remote control"
views: 8905
likes: 0
price: 699
difficulty: "Intermediate"
components:
  - "1x Arduino UNO"
  - "1x AA Batteries"
  - "1x Arduino Nano R3"
  - "1x Breadboard (generic)"
  - "1x Arduino Mega 2560"
  - "1x 10 Pc. Jumper Wire Kit, 5 cm Long"
  - "1x 9V battery (generic)"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles: []
documentationLinks: []
passwordHash: "87a11ad84ea7712ea9bd32b54d8b03acbfa3b73e9925ed7f6b83eeafbb159b8f"
encryptedPayload: "U2FsdGVkX1/Y4eqXkei0a+8sL4vZ0B5lwaRJ/yukcQJ30/0N12g/V8I1WmKnfzvJAWItg1MB6FfLi8z9D62BaUlZ6Fa5iD6UFYcwbZBjs6g="
seoDescription: "Learn how to correctly use an External power supply with Arduino. Safe wiring tips and power management for your DIY projects."
videoLinks: []
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/using-external-power-suppplies-with-arduino-explained-8a1536_cover.jpg"
lang: "en"