NE555 Pulse Frequency Adjustable Signal Generator

Power Connection: Apply 5V-15V DC to the VCC (+)* and GND (-) pins.
Output Signal: Connect the OUT pin to your target device (e.g., motor driver, microcontroller).
Adjust Frequency: Rotate the frequency pot to set the desired pulse rate (e.g., slow for fading effects, fast for motor control).
Adjust Duty Cycle: Rotate the duty cycle pot to change the pulse width (e.g., 50% for equal high/low time, 90% for mostly high).
Testing: Use an oscilloscope or multimeter to verify output characteristics.

NE555-Based Module: Utilizes the classic NE555 timer IC for generating square wave signals.
Adjustable Parameters: Allows precise control over frequency and duty cycle.
Wide Range: Supports a broad frequency range (e.g., 1Hz to 500kHz) and duty cycle (0-100%).
Easy Operation: Features potentiometers for simple adjustments without coding.
Multiple Applications: Ideal for PWM motor control, LED dimming, tone generation, and testing circuits.

Description
Review

This NE555 Pulse Frequency Duty Cycle Adjustable Module is a versatile signal generator built around the renowned NE555 timer IC. It provides a user-friendly platform for generating stable square wave signals with fully customizable frequency and duty cycle. The module includes two potentiometers: one for adjusting the frequency (Hz) of the output waveform and another for fine-tuning the duty cycle (the percentage of time the signal is “high” versus “low”). With a wide operating voltage range (typically 5V-15V DC), it integrates easily into various electronic projects, such as controlling the speed of DC motors via PWM, dimming LEDs, creating audio tones for buzzers, or serving as a clock source for digital circuits. Its compact design and straightforward interface make it an essential tool for hobbyists, educators, and engineers prototyping or testing systems requiring precise pulse signals.

Independent Controls: Separate knobs for frequency and duty cycle adjustment.
Visual Indicators: Often includes LEDs to show signal activity.
Stable Output: Provides a clean, stable square wave with minimal ripple.
Low Cost: Affordable solution for signal generation needs.
Solder-Free Setup: Pre-assembled module with header pins for breadboard or direct wiring.

Be the first to review “NE555 Pulse Frequency Adjustable Signal Generator”

Hassan Younas – October 16, 2025

⭐️⭐️⭐️⭐️⭐️ (5/5)
Excellent Signal Generator!
This NE555 module works flawlessly for PWM and frequency control. Compact, accurate, and great value for electronics projects.
Hassan Younas – October 16, 2025

⭐️⭐️⭐️⭐️ (4/5)
Reliable and Easy to Adjust
Very handy for testing circuits. Frequency and duty cycle adjustments are smooth and stable. Works perfectly for Arduino and motor control setups.
Hassan Younas – October 16, 2025

⭐️⭐️⭐️⭐️⭐️ (5/5)
Perfect for DIY Projects
Great little module for hobbyists. The signal output is clean and stable, and setup is straightforward. Highly recommend for electronic experiments.