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printing-a-servo-position-on-the-lcd-921a09-en.md

The movement(position) of the servo is displayed on the LCD. The servo position was hard to know. So monitoring the position of the servo would be very useful while playing around with it and makes it more interesting.

While playing around with the servo, the position was hard to track through the physical eye hence attached an LCD and displayed the position on it.

The servo is coded to move one step at a time and display each step on the LCD screen.

EXPANDED TECHNICAL DETAILS

Real-Time Hardware Telemetry

This project creates a closed-loop visual feedback system for monitoring the exact angular position of a servo motor.

  • Variable Mapping Interface: The Arduino reads an analog signal from a potentiometer (0-1023) and maps it to a servo angle (0-180 degrees). Simultaneously, this exact integer value is printed to a high-visibility 16x2 I2C LCD.
  • Display Refresh Logic: To prevent the LCD from flickering during movement, the firmware only updates the display every 100ms, providing a stable and readable readout while keeping the servo's response time instantaneous.

Accuracy

  • Calibration Routine: Includes a software offset adjustment to account for the physical variance in budget servo motors, ensuring the displayed angle matches the real-world shaft position.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Printing a servo position on the lcd"
description: "The LCD shows the position of the servo rotations"
author: "gamer06"
category: ""
tags:
  - "tracking"
  - "kids"
  - "monitoring"
views: 693
likes: 0
price: 699
difficulty: "Easy"
components:
  - "1x SG90 Micro-servo motor"
  - "1x Breadboard (generic)"
  - "1x Jumper wires (generic)"
  - "1x Arduino UNO"
  - "1x Alphanumeric LCD, 16 x 2"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles: []
documentationLinks: []
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seoDescription: "Display the servo rotation position on an lcd screen using Arduino. A simple project for beginners learning to monitor hardware components."
videoLinks: []
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/printing-a-servo-position-on-the-lcd-921a09_cover.jpg"
lang: "en"