Descriptions: Signal Generator 3 Channel PWM Board Module Pulse Frequency Duty Cycle Adjustable 

3-Channels XY-LPWM Signal Generator PWM Pulse Wave Frequency Digital Signal Generator Square Wave Duty Cycle Adjustable Module With LCD Display 3.3V-30V PWM Integrated 8Pcs Switches

Module Features:

• Output of three-channel PWM at the same time, Adjustable frequency, 3-channel frequency output consistent, duty ratio can be adjusted independently, suitable for most occasions
• LCD can control frequency and duty ratio, easy to operate;
• Wide frequency range, high precision;
• Support serial operation

Module description

• Three-channel PWM is outputted, wide frequency range and the duty ratio can be set independently;
• Frequency is divided into four areas, automatic switching:
• 1.XXX (no comma): 1HZ step unit, range: 1Hz ~ 999Hz;
• 2.X.XX (The decimal place is in the hundreds of places): 0.01 KHZ Stepping Unit, Range: 1.00 Khz ~ 9.99 Khz;
• 3.X.XX (The decimal place is in the ten places): 0.1 KHZ stepping unit, range: 10.0 Khz ~ 99.9 Khz;
• 4.XXX (The decimal place 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 54.1 KHz
• 1.2.4 set the pulse of 124Hz
• The value range of duty factor: 0 ~ 100%, 100% is represented by A0%.
• All parameters setted can be saved automatically in case of power cut.

Parameter Settings

• Module has 8 independent buttons, used to set the frequency and duty ratio, support short press (increase or decrease a unit) and long press (quick increase or decrease), very simple, set the parameters automatically save, power loss.
• 3-way duty ratio button can be pressed simultaneously, real-time setting, liquid crystal display is the last button pressed duty ratio, real-time is very strong, can be used as a simple multiple road duty ratio scan.

Module parameters:

• Operating voltage: 3.3 ~ 30V;
• Frequency range: 1Hz ~ 150KHz;
• Frequency accuracy: In every range of accuracy is over 2%
• Signal load capacity: Output current can be around 5 ~ 30ma
• Output amplitude: PWM amplitude and supply voltage equal
• Ambient temperature: -20 ~ + 70 ℃。

Scope of application:

• As a square wave signal generator to generate square wave signal for experiment development and use
• Used to generate a square wave signal to the motor driver;
• Generating adjustable pulses for MCU use;
• Generate adjustable pulse, control related circuit (PWM dimming speed and other uses).

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 10.5 KHZ (10.0 ~ 99.9)
• “F 1.0.5”: 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 returns: BELOW
• Set failed to return: AUTUMN

Package include:

• 1 × Signal Generator 3 Channel PWM Board Module Pulse Frequency Duty Cycle Adjustable