2 PWM Pulse Frequency Duty Cycle Adjustable Module Square Rectangular Wave Signal Generator Driven By Stepper MotorItem NO.: XY-LPWM2

2 PWM Pulse Frequency Duty Cycle Adjustable Module

Module Highlights:

1. Two independent PWM outputs, which can be set separately for frequency and duty cycle;

2. Wide frequency range and high accuracy;

3. Capable of serial communication

Module Description:

● Two independent PWM outputs, with the ability to set frequency and duty cycle separately;

● The frequency is divided into three ranges:

1. XXX (without Decimal separator): the small unit is 1Hz, and the value range is 1Hz~999Hz;

2. XX. X (the Decimal separator is in the tenth place): the small unit is 0.1Khz; Value range: 0.1KHz~99.9KHz

3. X.X.X. (three digits have Decimal separator): the small unit is 1 Khz; Value range: 1KHz~150KHz

e. G. Frequency display: 100 represents PWM output of 100Hz pulses;

54.1 represents a pulse with PWM output of 54.1KHz;

1.2.4. Represents a pulse with PWM output of 124KHz

● Duty cycle value range: 0-100;

● Three frequency ranges share a common duty cycle, all set parameters, and save after power failure.

Parameter Settings:

The module has three buttons: Set, Up, and Down;

1. By briefly pressing the [Set] key, switch to display four parameter values (FR1: frequency of PWM1; dU1: duty cycle of PWM1; FR2: frequency of PWM2; dU2: duty cycle of PWM2). Before switching, there will be a corresponding parameter name flashing prompt.

2. Directly press the [Up] and [Down] keys to modify the current parameter value (long press can quickly increase or decrease).

3. There are three preset frequency values for each of the two PWM channels. On the frequency display interface, by long pressing the [SET] button to switch, the duty cycle of the three frequencies is consistent. (XXX: range 1Hz~999Hz; XX. X: range 0.1Khz~99.9Khz; X.X.X.: range 1Khz~150Khz).

Module Parameters:

1. Working voltage: 5-30V supports micro USB 5.0V power supply;

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 8-30 ma;

5. Output amplitude: default 5V V-pp (can be changed through external power supply);

6. Environmental temperature: -30~+70 ℃.

Applicable Scope:

1. Used as a square wave signal generator to generate square wave signals for experimental development;

2. Used to generate square wave signals that drive stepper motor drivers;

3. Generate adjustable pulses for MCU use;

4. Generate adjustable pulses and control related circuits (such as PWM dimming speed control applications).

Serial Port Control:

● Communication standard: 9600 bps

● Data bits: 8

● Stop bit: 1

● Check digit: none

● Flow control: none