3-Way PWM Board Module Pulse Frequency Duty Cycle Adjustable Module LCD Display 1Hz-150Khz Signal Generator

​Module highlights:1. Three-way PWM output, adjustable frequency, three-way frequency output, duty cycle can be adjusted independently, suitable for most occasions;2. LCD liquid crystal display frequency and duty cycle, very clear, very easy to adjust3. Wide frequency range and high accuracy;4. Serial communicationFirst, module description3-way PWM output, wide frequency range, duty cycle can be adjusted independently in real time;The frequency is divided into four ranges and is automatically switched:1. XXX (no decimal point): The minimum unit is 1Hz, the value range is 1Hz~999Hz;2. The minimum unit of X.XX (the decimal point in hundreds) is 0.01Khz, and the value range is 1.00Khz~9.99Khz.3. XX.X (decimal point in ten digits): the minimum unit is 0.1Khz; the value range is 10.0KHz~99.9KHz4. X.X.X (decimal point is in ten and one hundred place): The minimum unit is 1Khz; the value range is 1KHz~150KHzE.g. Frequency display: 100 represents the PWM output 100Hz pulse;                       1.01 represents the PWM output 1.01K pulse;                        54.1 indicates the PWM output 54.1KHz pulse;                        1.2.4 indicates PWM output pulse of 124KHz;Duty cycle values ​​range from 0 to 100%, where 100% is expressed in A%.All setting parameters are saved after power off.Second, the parameter settings     The module has 8 independent keys to set the frequency and duty cycle, support short press (increase or decrease a unit) and long press (fast increase or decrease), it is very simple, set parameters automatically save, power off is not Lost.     The 3-way duty-cycle button can be pressed at the same time, real-time adjustment, LCD display is the duty cycle of the last pressed button, real-time is very strong, can be used as a simple several-way duty cycle scan.Third, the module parameters:1. Working voltage: 3.3~30V;2. Frequency range: 1Hz~150KHz;3. Frequency accuracy: The accuracy in each range is about 2%;4. Signal load capacity: The output current can be around 5~30ma;5. Output amplitude: PWM amplitude and supply voltage are equal;6. Ambient temperature: -20~+70°C.Fourth, the scope of application:1. It is used as a square wave signal generator to generate square wave signals for experimental development and use;2. Used to generate a square wave signal to control the motor driver;3. Generate adjustable pulses for use by the MCU;4. Generate adjustable pulses, control the relevant circuit (PWM dimming and other applications).V. Serial Control (Single-chip TTL level communication)Communication standard: 9600 bps data bits: 8Stop bit :1Check digit :noneFlow control :none1, set the PWM frequency"F101": The setting frequency is 101 HZ (001~999)"F1.05": setting frequency is 1.05 KHZ (1.00~9.99)"F10.5": Setting frequency is 10.5KHZ (10.0~99.9)"F1.0.5": The setting frequency is 105KHZ (1.0.0~1.5.0)2, set the PWM duty cycle"Dx:yyy": Set the PWM duty cycle x: (1~3) PWM serial number, yyy: (000~100) duty cycle %;For example, D1:050, set the 1st PWM duty cycle to 50%.3, read the setting parametersSend "read" string to read the set parameters.The read data format is as follows: F156, D1: 052, D2: 059, D3: 058,Successfully set return: DOWN;Failed to set return: FALL.Package Contents:1pc x 3- Way PWM Module