1Hz-150Khz 3-way Signal Generator Board PWM Module Pulse Frequency Load Cycle Adjustable LCD Display Module Upgraded VersionFeatures:Supports Serial OperationWide Frequency Range, High Precision LCD Display Can Display Frequency And Duty, Easy To OperateThree Channels PWM Output At The Same Time, Adjustable Frequency, 3-Channel Output Frequency Coherent, Duty Ratio Can Be Adjusted Independently, Suitable For Most OccasionsSpecifications:1. Operating voltage 3.3 - 30V;2. Frequency range1 Hz - 150KHz;3. Frequency accuracy: in each accuracy range, it is about 2%4. Signal carrying capacity: the output current can be about 5 - 30ma5. Output amplitude: PWM amplitude and supply voltage equal to 6. Ambient temperature: -20 - +70°C一. Module descriptionThree-channel PWM is output, wide frequency range and fill factor can be adjusted independentlyFrequency is divided into four areas, automatic switching:1.XXX (without decimal point): 1HZ step unit, range: 1Hz - 999Hz;2.X.XX (decimal is in hundreds): 0.01KHZ step unit, range: 1.00Khz - 9.99Khz;3.X.XX (decimal is in place of tens): 0.1KHZ step unit, range: 10.0Khz - 99.9Khz;4.X.X.X (decimal is here): step unit 1KHZ, range: 1Khz - 150Khz; For example, the display of frequency: 100 represents a 100Hz pulse; 1.01 represents a 1.01KHz pulse; 54.1 represents the pulse 54.1KHz1.2.4 represents the pulse 124HzThe range of dutyfactor values: 0 - , is represented by A0 %. All parameter settings can be automatically saved in the event of power cut.二. Parameter settingsThe module has 8 independent keys, used to set the frequency and fill rate, support short press (increase or decrease the unit) and long press (quickly increase or decrease), very simple, set the parameters automatically save, energy loss.3-Way duty button ratio can be pressed at the same time, real-time adjustment, liquid crystal display is the last button pressed Fill rate, real-time is very strong, can be used as a simple several road duty scanning ratio.三. Scope of application:1. Used as a square wave signal generator to generate a square wave signal for the development and use of experiments2. Used to generate square wave signal to control the motor controller;3. Generating adjustable pulses for MCU use;4. Generate adjustable pulse, control circuit (PWM dimming speed and other applications).四.UART of serial command Baud rate: 9600 bps data length: 8Stop bits: 1Control digit: none Flow control: none1. Set PWM Frequency"F101": set frequency 101HZ(001 - 999)"F1.05": set frequency 1.05KHZ(1.00 - 9.99)"F10.5": set frequency 10.5KHZ(10.0 - 99.9)"F1.0.5": set frequency 105KHZ(1.0.0 - 1.5.0)2. Set PWM Fill Factor"dx:YYY": Set PWM Fill Factor x: (1 - 3) PWM Serial Number, YYY: (000 - 100) Fill Factor; For example, d1:050, set the 1th PWM duty ratio to 50%3. Read configuration parametersSend "read" to read the setting parameters. Message Format: F156,D1:052,D2:059,D3:058,Set Successful Return: DownSet Not Returned: DropSize: 5.5x3.8cm/2.17x1.50inchNote:Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before you make a bid, due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:1x Module