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

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

Feature: 1.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 2Lcd can display frequency and duty datio,Easy to oprate 3. Wide frequency range, high precision 4. Support Serial operation Descrtion: Three-channel PWM  is outputted,wide frequency range and the duty ratio can be adjusted independently Frequency is divided into four areas, automatic switching: XXX(No decimal point): 1HZ Sting Unit, Range: 1Hz~999Hz X.XX(The decimal is in the hundreds place): 0.01KHZ Sting Unit, Range: 1.00Khz~9.99Khz X.XX(The decimal is in the tens place): 0.1KHZ Sting Unit, Range: 10.0Khz~99.9Khz X.X.X(The decimal is in the ones place): 1KHZ Sting 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 The value range of dutyfactor: 0~100%,100% is represented by A0% All parameters set up can be automatically saved in case of power cut. Setting: Module has 8 independent keys, used to set the frequency and duty ratio, support short pre (increase or decrease a unit) and long pre (fast increase or decrease), very simple, set the parameters automatically save, power lo. 3-Way duty ratio on can be preed at the same time, real-time adjustment, liquid crystal display is the last preed on duty ratio, real-time is very strong, can be used as a simple several road duty ratio scan. Parameters: 1.Operating voltage: 3.3~30V 2. Frequency range: 1Hz~150KHz 3. Frequency accuracy: In each range of accuracy is about 2% 4. Signal load capacity: Output current can be around 5~30ma 5. Output amplitude: PWM amplitude and supply voltage equal 6. Ambient temperature: -20~+70 Celsius of application: 1. Used as square wave signal to generate square wave signal for experiment development and use 2. Used to generate a square wave signal to control the motor driver 3. Generating adjustable pulses for MCU use 4. 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

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)

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% Read Setup parameters Send a 'read' string to read the parameters of the setting. Meage format: F156, D1:052, D2:059, D3:058 Set succeful return: DOWN Set failed to return: FALL

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