Product Description: new high quality Made of high quality material, Module highlights: 1. LCD display frequency and duty cycle, clear at a glance, PWM output can set frequency and duty cycle; 2. Wide frequency range and high precision; 3. Serial communication, TTL level 1. Module Description PWM output, frequency and duty cycle can be set; The frequency is divided into four ranges with automatic switching: 1. XXX (no decimal point): the minimum unit is 1Hz, and the value range is 1Hz999Hz; 2. The minimum unit of X.XX (hundreds decimal point) is 0.01Khz, and the range is 1.00Khz9.99Khz; 3. XX.X (ten decimal places): the minimum unit is 0.1Khz; the value range is 10.0KHz99.9KHz 4. X.X.X (decimal point for tens and hundreds): the minimum unit is 1Khz; the value range is 1KHz150KHz Frequency display: 100 means PWM output 100Hz pulse; 1.01 means PWM output 1.01K pulse; 54.1 means that the PWM output has a 54.1kHz pulse; 1.2.4 means that the PWM output is 124kHz pulse; Duty cycle range: 0~100%; All setting parameters are automatically saved when power off. 2. Parameter setting The module has four indep endent buttons for setting the frequency and duty cycle. It supports touch (increase or decrease by o ne unit) and long press (fast increase or decrease). The set parameters are automatically saved and will not be lost when power is off. 3. Module parameters: 1. Working voltage: 3.3~30V; 2. Frequency range: 1Hz150KHz; 3. Frequency accuracy: the accuracy of each range is about 2%; 4. Signal carrying capacity: the output current can be around 5-30ma; 5. Output amplitude: PWM amplitude is equal to the power supply voltage; 6. Ambient temperature: -20+70. 4. Scope of application: 1. Used as a square wave signal generator to generate square wave signals for experimental development; 2. Used to generate a square wave signal to control the motor driver; 3. Generate adjustable pulses for MCU use; 4. Generate adjustable pulses and control related circuits (PWM dimming speed and other applications). 5. Serial port control (SCM TTL level communication) Communication standard: 9600 bps Data bits: 8 stop bits: 1 Check digit: none Control: None 1. Set the frequency of PWM "F101": Set the frequency to 101 HZ (001 to 999) "F1.05": set frequency 1.05KHZ (1.009.99) "F10.5": Set the frequency to 10.5KHZ (10.099.9) "F1.0.5": Set the frequency to 105KHZ (1.0.01.5.0) 2. Set the PWM duty cycle "DXXX": set the PWM duty cycle to XXX; (001 ~ 100) Such as D050, set the PWM duty cycle to 50% 3. Read setting parameters Send a "read" string to read the set parameters. Set successfully return: DOWN; Installation failure returns: FALL Package Included: 1 * module Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data. _x000D_ _x000D_