Hot Sale XY-KPWM Pulse Frequency and Duty Cycle Adjustable Square Wave Rectangular Wave Signal Generator XY-PWM1

Module highlights:

1. Dual mode, fine mode duty cycle step 0.1%;
2. LCD liquid crystal display frequency and duty cycle are clear at a glance, and it is very convenient to adjust with coding potentiometer; PWM output can set frequency and duty cycle separately;
3. It has a locking function to prevent misuse;
5. The upper and lower limits of the duty cycle can be set; KPWM has a switch, which can turn on and off the PWM output with one key;
6. Wide frequency range and high precision;
7. Can communicate via serial port

1. Module Description
PWM output, frequency and duty cycle can be set independently;
Normal mode:
Frequency range 1HZ~150KHZ Duty cycle 000~100%, duty cycle step 1%
Fine Mode:
Frequency range 1HZ~15KHZ, duty cycle 00.0~100%, duty cycle step 0.1%
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 1Hz~999Hz;
2. The minimum unit of X.XX (the decimal point is in hundreds) is 0.01Khz, and the value range is 1.00Khz~9.99Khz;
3.XX.X (decimal point in tens): the smallest unit is 0.1Khz; the value range is 10.0KHz~99.9KHz
4. XXX (the decimal point is in tens and hundreds): the minimum unit is 1Khz; the value range is 1KHz~150KHz
For example frequency display: 100 means PWM output 100Hz pulse;
1.01 means PWM output 1.01K pulses;
54.1 means PWM output 54.1KHz pulse
1.2.4 means PWM output 124KHz pulse;

Duty cycle value range: 0~100%;

All set parameters are saved after power off.

2. Parameter setting

This product adjusts the frequency and duty cycle by rotating the potentiometer. Can be quickly adjusted according to the speed. The duty cycle is adjusted by default. Short press to adjust the frequency, long press for 2 seconds to lock, long press for 5 seconds to switch modes (normal mode/fine mode), easy to operate, the parameters are automatically saved after setting, and lost when power off.

3. Module parameters:
1. Working voltage: 3.3~30V;
2. Frequency range: normal mode 1Hz~150KHz; fine mode 1HZ~15KHZ;
3. Frequency accuracy: the accuracy of each range is about 2%;
4. Signal load 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℃.
7. Weight: 42g

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 to control related circuits (PWM dimming, speed regulation and other applications).

5. Serial port control (SCM TTL level communication)

Serial port control (MCU TTL level communication)

Communication standard: 9600 bps

Data bits: 8
stop bits: 1
Check digit: none
Flow Control: None

Serial command description

READ Read parameter settings

ON Turn on the PWM output

OFF Turn off PWM output

DNxxx Set the lower limit of the duty cycle
DNxxx: set normal mode
DNxx.x: Set fine mode

UPxxx sets the upper limit of the duty cycle
UPxxx: set normal mode
UPxx.x: Set fine mode

MODEx MODE0: normal mode
MODE1: fine mode

Fxxx "F101": set the frequency to 101HZ (001~999)
"F1.05": Set the frequency to 1.05KHZ (1.00~9.99)
"F10.5": Set the frequency to 10.5KHZ (10.0~99.9)
"F1.0.5": Set the frequency to 105KHZ (1.0.0~1.5.0)

Dxxx Normal mode: "DXXX":XXX(001~100) For example, D050, set the PWM duty cycle to 50%

Fine mode: "DXX.X": XX.X(00.1~100) such as D20.8, set the PWM duty cycle to 20.8%

Set successfully return: DOWN;

If the setting fails, return: FALL.