LDTR-WG0170 PWM Pulse Frequency / Square Wave / Rectangular Wave Signal Generator

Description

The module description
PWM output, you can set the frequency and duty cycle separately;
The frequency is divided into four ranges and is automatically switched:
1. XXX (no decimal point): The minimum unit is 1 Hz, and the value ranges from 1 Hz to 999 Hz.
2. X.XX (the decimal point is in the hundredth place) The minimum unit is 0.01Khz, and the value range is 1.00Khz~9.99Khz;
3. XX.X (decimal point is ten): the minimum unit is 0.1Khz; the value range is 10.0KHz~99.9KHz
4. X.X.X (decimal point in ten and hundred): the minimum unit is 1Khz; the value range is 1KHz~150KHz
5. Frequency display: 100 indicates that the PWM outputs a pulse of 100 Hz;
6. 1.01 indicates that the PWM outputs a pulse of 1.01K;
7. 54.1 indicates that the PWM outputs a pulse of 54.1 kHz;
8. 1.2.4 indicates that the PWM output is a pulse of 124KHz;
9. The duty ratio ranges from 0 to 100%.
10. All setting parameters are saved after power down.

The parameter settings
The module has 4 independent buttons for setting the frequency and duty cycle. It supports short press (increase or decrease one unit) and long press (fast increase or decrease). Simple, the parameters are automatically saved after setting, and the power is not lost. .

The module parameters
1. Working voltage: 3.3~30V;
2. Frequency range: 1Hz~150KHz;
3. Frequency accuracy: the accuracy in each range is about 2%;
4. Signal load capacity: the output current can be around 5~30ma;
5. Output amplitude: The PWM amplitude is equal to the supply voltage;
6. Ambient temperature: -20~+70°C.

The scope of application
1. Used as a square wave signal generator to generate a square wave signal for experimental development;
2. Used to generate a square wave signal that controls the motor driver;
3. Generate adjustable pulses for use by the MCU;
4. Generate adjustable pulses and control related circuits (applications such as PWM dimming speed regulation).
Serial port control (microcontroller TTL level communication)
1. Communication standard: 9600 bps data bits: 8
2. Stop position: 1
3. Check digit: none
4. Flow control: none
5. Set the frequency of the PWM
-“F101”: Set the frequency to 101 HZ (001~999)
-“F1.05”: Set the frequency to 1.05 KHZ (1.00~9.99)