Check the listing for details. 1PCS PWM Pulse Frequency Duty Cycle Square Adjustable Wave Signal Generator. Condition: New. Listed at 4.88 USD. 1PCS PWM Pulse Frequency Duty Cycle Square Adjustable Wave Signal GeneratorProduct Image: Product Description: Module Highlights:1.LCD display frequency and duty cycle, very clear, PWM output can be set to the frequency and duty cycle;2. Wide frequency range, high precision;3. Serial communication, TTL levelFirst, the module descriptionPWM output, you can set the frequency, duty cycle;Frequency is divided into four ranges, automatic switching:1. XXX (no decimal point): the smallest unit is 1Hz, the value range of 1Hz ~ 999Hz;2. X.XX (decimal point in the hundred) the smallest unit is 0.01Khz, the range of 1.00Khz ~ 9.99Khz;3. XX.X (decimal point in ten): the smallest unit is 0.1Khz; value range of 10.0KHz ~ 99.9KHz4. X.X.X (decimal point in ten and hundred): the smallest unit is 1Khz; value range 1KHz ~ 150KHzfrequency display: 100 indicates PWM output 100Hz pulse;1.01 indicates PWM output 1.01K pulse;54.1 indicates that the PWM output has a pulse of 54.1 kHz;1.2.4 indicates that the PWM output is 124 kHz pulse;Duty cycle range: 0 ~ 100%;All set parameters, power-down automatically saved.Second, the parameter settingsThe module has four independent keys, used to set the frequency and duty cycle, support touch (increase or decrease a unit) and long press (fast increase or decrease), set the parameters automatically save, power down Not lost.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 about 5 ~ 30ma;5. Output amplitude: PWM amplitude equal to the supply voltage;6. Ambient temperature: -20 ~ +70 ℃.Fourth, the scope of application:1. Used as a square wave signal generator, generate square wave signal for experimental development and use;2. Used to generate a square wave signal that controls the motor driver;3. generate adjustable pulse for MCU use;4. generate adjustable pulse, control the relevant circuit (PWM dimming speed and other applications).5, serial control (single-chip TTL level communication)Communication standard: 9600 bps Data bits: 8Stop bit: 1Check digit: noneFlow control: none1, set the frequency of the PWM"F101": Set the frequency to 101 HZ (001 to 999)"F1.05": set the frequency of 1.05 KHZ (1.00 ~ 9.99)"F10.5": Set the frequency to 10.5KHZ (10.0 ~ 99.9)"F1.0.5": set the frequency of 105KHZ (1.0.0 ~ 1.5.0)2, set the PWM duty cycle"DXXX": set the PWM duty cycle to XXX; (001 ~ 100)Such as D050, set the PWM duty cycle is 50%3, read the set parametersSend a "read" string to read the set parameters.Set successfully return: DOWN;Setup failed to return: FALL.Package Includes: 1x PWM pulse frequency duty cycle adjustable moduleFeedbackWarrantyShipmentFeedbackWe appreciate your feedback very much. As it will motivate us do better. If you have any questions with our goods or service, Please kindly contact us firstly before leaving negative feedback. Thank you in advance Warranty1. All merchandise will be carefully test before shipping. We will try our best to avoid any quality problem. 2. We promise warranty for quality in one year and we will repair it free of charge. The returning shipping should be paid by customer. 3. If you are not satisfied with the product, Please contact us. We'll provide you a satisfying solution.Shipment1.Normmly we will send the goods within 1-3 working days after your payment is verified . 2.Please check if the goods are in good condition and sign before the delivery man leaves.If you find the product is lost or damaged on the way. Please take photo and let the delivery men confirm it. Then we will help you let the shipping company compensate you.On Aug-07-20 at 06:15:09 PDT, seller added the following information: