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6 Pack NE555 Pulse Generator Frequency Duty Cycle Adjustable Module Square Wave Stepper Motor Driver DC5V-12V Signal Generator for Arduino DIY

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$8.95

$ 4 .99 $4.99

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  • 【Scope of application of this module】 Used as a square wave signal generator to produce square wave signals for experimental development. Used to generate square wave signals to drive the stepper motor driver. Generate adjustable pulses for MCU use. Generate adjustable pulses to control related circuits.
  • Size: 3.1CM*2.2CM; Main chip:NE555; input voltage:5V-15VDC. 5V power supply, the output current can be about 15MA; 12V power supply, the output current can be about 35MA; Input current:≥100MA Output amplitude: 4.2V V-PP to 11.4V V-PP.(According to different input voltage, the output amplitude will be different) output current: ≥ 15MA or less (5V power supply, V-PP greater than 50%), ≥ 35MA (12V power supply, V-PP greater than 50%)
  • 【Advantageous features】 1, the output with LED indication, there is no output directly clear (low level LED amount, high level LED extinguished, the frequency is relatively low when the LED flashes); 2, the output frequency range gear selectable, so that the output frequency is more continuously adjustable; Low frequency gear: 1Hz ~ 50Hz. Medium frequency gear: 50Hz ~ 1kHz. Medium and high frequency: 1KHz ~ 10kHz. High frequency: 10kHz～200kHz.
  • Output duty cycle can be fine-tuned, duty cycle and frequency are not separately adjustable, adjust the duty cycle will change the frequency; the output frequency is adjustable; Period T=0.7(RA+2RB)C
  • RA, RB is 0-10K adjustable; C=0.001UF at low frequency; C=0.1UF at medium frequency gear; C=1UF for middle and high frequency gear; C = 100UF at high frequency, so the frequency of the waveform can be calculated;


1. Versatile Signal Generation: Ideal for experimental development, our heat shrink tubing kit functions as a square wave signal generator.
It efficiently drives stepper motor drivers and generates adjustable pulses for microcontroller applications, providing a broad utility across various circuit controls.
2. Compact and Powerful Design: Measuring 3.1CM by 2.2CM, this module features the NE555 main chip.
It operates effectively between 5V-15V DC, offering output currents of approximately 15MA at 5V and 35MA at 12V.
The output amplitude varies from 4.2V to 11.4V, adapting to different input voltages for optimal performance.
3. Enhanced Functionality with LED Indicators: The module includes LED indicators that clearly display output status—illuminating at low levels and extinguishing at high levels.
It covers a wide frequency range with selectable gears, allowing continuous adjustment from low (1Hz) to high frequency (up to 200kHz).
4. Adjustable Output for Precise Control: Fine-tune the output duty cycle for precise control, keeping in mind that changes in duty cycle will affect frequency.
The module's output frequency is adjustable, calculated using the formula T=0.7(RA+2RB)C, ensuring tailored application use.
5. Customizable Frequency Components: Adjust RA and RB resistances from 0-10K to modify the frequency.
With capacitance values ranging from 0.001UF to 100UF, users can calculate waveform frequency to suit specific needs,
enhancing the module's adaptability for diverse applications.