1Hz-150Khz 3.3V-30V PWM Pulse Frequency Duty Cycle LCD Display Signal Generator

SKU: 1941158

1.64 1.64 Piece 1.6400000000000001 USD

¥ 11.70

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  • Support Serial operation

  • Wide frequency range,high precision

  • LCD can display frequency and duty datio,Easy to oprate

  • Output of three-channel PWM at the same time, Adjustable frequency,3-channel frequency output consistent,duty ratio can be independently adjusted,suitable for most occasions


  • Operating voltage: 3.3~30V;

  • Frequency range: 1Hz~150KHz;

  • Frequency accuracy: In each range of accuracy is about 2%

  • Signal load capacity: Output current can be around 5~30ma

  • Output amplitude: PWM amplitude and supply voltage equal 

  • Ambient temperature: -20~+70°

Frequency is divided into four areas,automatic switching:

  • 1.XXX(No decimal point): 1HZ Stepping Unit,Range:1Hz~999Hz;

  • 2.X.XX(The decimal is in the hundreds place):0.01KHZ Stepping Unit,Range: 1.00Khz~9.99Khz;

  • 3.X.XX(The decimal is in the tens place):0.1KHZ Stepping Unit,Range: 10.0Khz~99.9Khz;

  • 4.X.X.X(The decimal is in the ones place):1KHZ Stepping Unit,Range: 1Khz~150Khz;

  • e.g. ,frequency display:100 represent the pulse of 100Hz ;

  • 1.01 represent the pulse of 1.01KHz; 

  • 54.1 represent the pulse of 54.1KHz

  • 1.2.4 represent the pulse of 124Hz


  • Used as square wave signal generator to generate square wave signal for experiment development and use

  • Used to generate a square wave signal to control the motor driver;

  • Generating adjustable pulses for MCU use;

  • Generate adjustable pulse, control related circuit (PWM dimming speed and other applications).

UART Serial command:

  • Baud rate: 9600 bps Data length:8

  • Stop bits:1

  • Check digit: none

  • Flow control: none

1.set the frequency of the PWM 

  • "F101": Set frequency of 101 HZ (001~999)

  • "F1.05": Set frequency of 1.05 KHZ(1.00~9.99)

  • "F10.5": Set frequency of 10.5KHZ(10.0~99.9)

  • "F1.0.5":Set frequency of 105KHZ(1.0.0~1.5.0)

2.set the duty ratio of PWM

  • "DX:YYY": Set PWM duty ratio x: (1~3) PWM serial number,YYY: (000~100) duty ratio;

  • For example d1:050,set 1th PWM duty ratio to 50%

  • 3.Read Setup parameters

  • Send a "read" string to read the parameters of the setting.

  • Message format:F156,D1:052,D2:059,D3:058,

  • Set successful return:DOWN

  • Set failed to return:FALL