Features:

1.Output of three-channel PWM at the same time, Adjustable frequency, 3-channel frequency output consistent, duty ratio can be independently adjusted, suitable for most occasions

2.Lcd can display frequency and duty ratio,Easy to oprate;

3.Wide frequency range, high precision;

4.Support Serial operation

Description

Three-channel PWM is outputted,wide frequency range and the duty ratio can be adjusted independently;

Frequency is divided into four areas, automatic switching:

1.XXX(No decimal point): 1HZ Stepping Unit, Range: 1Hz~999Hz;

2.X.XX(The decimal is in the hundreds place):0.01KHZ Stepping Unit, Range: 1.00Khz~9.99Khz;

3.X.XX(The decimal is in the tens place):0.1KHZ Stepping Unit, Range: 10.0Khz~99.9Khz;

4.X.X.X(The decimal is in the ones place): 1KHZ Stepping Unit, Range: 1Khz~150Khz;

e.g. ,frequency display:100 represent the pulse of 100Hz ;

1.01 represent the pulse of 1.01KHz;

54.1 represent the pulse of 54.1KHz

1.2.4 represent the pulse of 124Hz

•The value range of dutyfactor: 0~100%,100% is represented by A0%.

All parameters setted up can be automatically saved in case of power cut.

Parameter settings:

Module has 8 independent keys, used to set the frequency and duty ratio, support short press (increase or decrease a unit) and long press (fast increase or decrease), very simple, set the parameters automatically save, power loss.

3-Way duty ratio button can be pressed at the same time, real-time adjustment, liquid crystal display is the last pressed button duty ratio, real-time is very strong, can be used as a simple several road duty ratio scan.

Module Parameters:

1.Operating voltage：3.3~30V；

2. Frequency range：1Hz~150KHz；

3. Frequency accuracy: In each range of accuracy is about 2%

4. Signal load capacity: Output current can be around 5~30ma

5. Output amplitude: PWM amplitude and supply voltage equal

6. Ambient temperature：-20~+70℃

Scope of application:

1. Used as square wave signal generator to generate square wave signal for experiment development and use

2. Used to generate a square wave signal to control the motor driver;

3. Generating adjustable pulses for MCU use;

4. Generate adjustable pulse, control related circuit (PWM dimming speed and other applications).

UART Serial command

Baud rate:9600 bps Data length:8

Stop bits :1

Check digit:none

Flow control:none

1.set the frequency of the PWM

“F101”: Set frequency of 101 HZ (001~999)

“F1.05”: Set frequency of 1.05 KHZ (1.00~9.99)

“F10.5”: Set frequency of 10.5KHZ (10.0~99.9)

“F1.0.5”:Set frequency of 105KHZ (1.0.0~1.5.0)

2.set the duty ratio of PWM

"DX:YYY": Set PWM duty ratio x: (1~3) PWM serial number, YYY: (000~100) duty ratio;

For example d1:050, set 1th PWM duty ratio to 50%

3.Read Setup parameters

Send a "read" string to read the parameters of the setting.

Message format：F156,D1:052,D2:059,D3:058，

Set successful return:DOWN

Set failed to return:FALL

Package Includes:

1pc x Module