1Hz-150Khz Signal Generator PWM Board Module Pulse Frequency Duty Cycle Adjustable Module LCD Display 3.3V-30V 1Hz - 150Khz Module 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 datio,Easy to oprate;
3.Wide frequency range, high precision;
4.Support Serial operation
Module 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£º
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 duty factor: 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£º 1.Operating voltage£º3.3~30V£»
2. Frequency range£º1Hz~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£º-20~+70¡É¡£
Scope of application£º 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£ºF156,D1:052,D2:059,D3:058£¬
Set successful return£ºDOWN
Set failed to return£ºFALL