PWM signal generator with screen

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Displays

Internal Reference: MOD-129

PWM signal generator with screen

The PWM Signal Generator with screen is capable of generating a square wave signal for experimental development that involves PWM dimming and speed controlling (e.g. motor drivers) as well as other microcontroller use. It can be controlled via the Serial Protocol TTL (TXD & RXD pins). It is stable and reliable, and fairly simple to use.

PWM signal generator Quick Spec

  • Operating Voltage: 3.3 - 15 VDC
  • Frequency Range: 1Hz – 150 KHz
  • Frequency Accuracy: the accuracy in each range is about 2%
  • Signal Load Capacity: 5 - 30 mA
  • Output Amplitude: PWM Amplitude Equal to the Supply Voltage
  • Operating Temperature: -20 - +70 Celsius
  • Dimensions: 52 x 32 x 10 mm

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pulse generator diagram

Communication Standard

  • 9600 bps Data bits: 8
  • Stop bit: 1
  • Check digit: none
  • Flow control: none

Serial Communication

  1. Setting the frequency of the PWM:
    • Command "F101": Set the frequency to 101 HZ (001 to 999)
    • Command "F1.05": set the frequency of 1.05 KHZ (1.00 ~ 9.99)
    • Command "F10.5": Set the frequency to 10.5KHZ (10.0 ~ 99.9)
    • Command "F1.0.5": set the frequency of 105KHZ (1.0.0 ~ 1.5.0)
  2. Setting the PWM duty cycle:
    • DXXX": set the PWM duty cycle to XXX; (001 ~ 100)
    • Example: “D050”, sets the PWM duty cycle is 50%
  3. Read the set parameter
    • Send a "read" string to read the set parameters
    • Set successfully return: DOWN
    • Setup failed to return: FALL
  4. See https://www.youtube.com/watch?v=otZyCIYluFw