VOKTTA PWM xung tần số nhiệm vụ chu kỳ điều chỉnh Module Square Wave Rectangular Wave Signal Generator

一. Module description

PWM output, frequency and duty cycle can be set separately;

The frequency is divided into four ranges, which are automatically switched:

1.XXX (without decimal point): the minimum unit is 1Hz, the value range is 1Hz~999Hz;

2. The minimum unit of X.XX (the decimal point is in the hundreds) is 0.01Khz, and the value range is 1.00Khz~9.99Khz;

3.XX.X (the decimal point is in ten places): the minimum unit is 0.1Khz; the value range is 10.0KHz~99.9KHz

4.X.X.X (the decimal point is in the tens and hundreds): the minimum unit is 1Khz; the value range is 1KHz~150KHz

e.g. Frequency display:

100 means PWM outputs 100Hz pulse;

1.01 means PWM output 1.01K pulse;

54.1 means PWM output pulse of 54.1KHz;

1.2.4 means PWM output 124KHz pulse;

Duty cycle value range: 0~100%;

All setting parameters are saved when power off.

二.Parameter setting

The module has 4 independent buttons, which are used to set the frequency and duty cycle. It supports short press (increase or decrease one unit) and long press (rapid increase or decrease). It is very simple. lost.

三. 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℃.

四.Scope of application:

1. Used as a square wave signal generator to generate square wave signals for experimental development;

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

3. Generate adjustable pulses for MCU use;

4. Generate adjustable pulses to control related circuits (applications such as PWM dimming and speed regulation).

五. serial port control (MCU TTL level communication)

Communication standard: 9600 bps Data bits: 8

stop bit: 1

Check Digit :none

flow control :none

1. Set the frequency of PWM

"F101": set the frequency to 101 Hz (001~999)

"F1.05": set the frequency to 1.05 KHZ (1.00~9.99)

"F10.5": set the frequency to 10.5KHZ (10.0~99.9)

"F1.0.5": set the frequency to 105KHZ (1.0.0~1.5.0)

2. Set the duty cycle of PWM

"DXXX": Set the duty cycle of PWM to XXX; (001~100)

For example, D050, set the PWM duty cycle to 50%

3. Read the setting parameters

Send the "read" string to read the set parameters.

Set successfully and return: DOWN;

Setting failure returns: FALL.

list：

1*PWM Adjustable Pulse Frequency Duty Cycle Square Wave Square Wave Signal Generator Module