- LCD display frequency and duty cycle, very clear, PWM output can be set to the frequency and duty cycle;
- Wide frequency range, high precision;
- Serial communication, TTL level;
Module Feature:
- PWM output, you can set the frequency, duty cycle;
- Frequency is divided into four ranges, automatic switching:
- XXX (no decimal point): the smallest unit is 1Hz, the value range of 1Hz - 999Hz;
- X.XX (decimal point in the hundred) the smallest unit is 0.01Khz, the range of 1.00Khz - 9.99Khz;
- XX.X (decimal point in ten): the smallest unit is 0.1Khz; value range of 10.0KHz - 99.9KHz
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X.X.X (decimal point in ten and hundred): the smallest unit is 1Khz; value range 1KHz - 150KHz
Frequency display: 100 indicates PWM output 100Hz pulse;
- 1.01 indicates PWM output 1.01K pulse;
- 54.1 indicates that the PWM output has a pulse of 54.1 kHz;
- 1.2.4 indicates that the PWM output is 124 kHz pulse;
- Duty cycle range: 0 - 100%;
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All set parameters, power-down automatically saved.
Parameter Settings:
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The module has four independent keys, used to set the frequency and duty cycle, support touch (increase or decrease a unit) and long press (fast increase or decrease), set the parameters automatically save, power down Not lost.
Module Parameters:
- Working voltage: 3.3 - 30V;
- Frequency range: 1Hz - 150KHz;
- Frequency accuracy: the accuracy in each range is about 2%;
- Signal load capacity: the output current can be about 5 - 30ma;
- Output amplitude: PWM amplitude equal to the supply voltage;
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Ambient temperature: -20 - +70 degree
Application:
- Used as a square wave signal generator, generate square wave signal for experimental development and use;
- Used to generate a square wave signal that controls the motor driver;
- generate adjustable pulse for MCU use;
- generate adjustable pulse, control the relevant circuit (PWM dimming speed and other applications).
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Serial control (single-chip TTL level communication)
Communication Standard:
- 9600 bps Data bits: 8
- Stop bit: 1
- Check digit: none
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Flow control: none
1, set the frequency of the PWM
- "F101": Set the frequency to 101 HZ (001 to 999)
- "F1.05": set the frequency of 1.05 KHZ (1.00 - 9.99)
- "F10.5": Set the frequency to 10.5KHZ (10.0 - 99.9)
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"F1.0.5": set the frequency of 105KHZ (1.0.0 - 1.5.0)
2, set the PWM duty cycle
- "DXXX": set the PWM duty cycle to XXX; (001 - 100)
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Such as D050, set the PWM duty cycle is 50%
3, read the set parameters
- Send a "read" string to read the set parameters.
- Set successfully return: DOWN;
- Setup failed to return: FALL.
