Signal Generator Module 1Hz-150Khz 3.3V~30V with Display LCD

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*Disclaimer: The images are merely illustrative.

Features:

• Support Serial operation
• Wide frequency range, high precision
• LCD can display frequency and duty datio, Easy to oprate
• Adjustable frequency, frequency output consistent
• Duty ratio can be adjusted, suitable for most occasions

Specifications:

1. Operating voltage 3.3~30Vdc;
2. Frequency range1Hz~150KHz;
3. Frequency accuracy: 2%
4. Signal load capacity: Output current can be around 5~30mA
5. Output amplitude: PWM amplitude and supply voltage are equal 
6. Ambient temperature: -20~+70°
7. Size: 5.5x3.8cm / 2.17x1.50inch

Module description

One-channel PWM output, wide frequency range and the duty ratio can be adjusted.
Frequency is divided into four areas, automatic switching:

• XXX(No decimal point): 1HZ Stepping Unit,Range:1Hz~999Hz;
• X.XX(The decimal is in the hundreds place):0.01KHZ Stepping Unit,Range: 1.00Khz~9.99Khz;
• X.XX(The decimal is in the tens place):0.1KHZ Stepping Unit,Range: 10.0Khz~99.9Khz;
• 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
• 124 represent the pulse of 124Hz

The value range of dutyfactor: 0~100%,100% is represented by A0%.
All parameters setted up can be automatically saved in case of power cut.

Parameter settings

The module has 4 independent keys with double function, used to set the frequency and duty ratio, a short press (increase or decrease a unit) and long press (fast increase or decrease), very simple, set the parameters automatically and save on power loss.

Scope of application:

1. Used as square wave signal generator to generate square wave signal for experiment and development aplications
2. Used to generate a square wave signal to control a motor driver;
3. Generating adjustable pulses for MCU use;
4. Generate adjustable pulse, control related circuit (PWM dimming speed and other applications).

UART Serial commands and settings:

• 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