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Характеристики

Dual Mode Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display 1Hz-150Khz 3.3V-30V PWM Board Module

 

Module Highlights:
1.LCD display frequency and duty cycle, very clear, PWM output can be set to the frequency and duty cycle;
2. Wide frequency range, high precision;
3. Serial communication, TTL level

 

First, the module description
PWM output, you can set the frequency, duty cycle;
Frequency is divided into four ranges, automatic switching:
1. XXX (no decimal point): the smallest unit is 1Hz, the value range of 1Hz ~ 999Hz;
2. X.XX (decimal point in the hundred) the smallest unit is 0.01Khz, the range of 1.00Khz ~ 9.99Khz;
3. XX.X (decimal point in ten): the smallest unit is 0.1Khz; value range of 10.0KHz ~ 99.9KHz
4. 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%;
All set parameters, power-down automatically saved.
Second, the parameter settings
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.
Third, 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 about 5 ~ 30ma;
5. Output amplitude: PWM amplitude equal to the supply voltage;
6. Ambient temperature: -20 ~ +70 ℃.
Fourth, the scope of application:
1. Used as a square wave signal generator, generate square wave signal for experimental development and use;
2. Used to generate a square wave signal that controls the motor driver;
3. generate adjustable pulse for MCU use;
4. generate adjustable pulse, control the relevant circuit (PWM dimming speed and other applications).
5, serial control (single-chip TTL level communication)

 

Communication standard:
9600 bps Data bits: 8

Stop bit: 1
Check digit: none
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)
"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)
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.

 

2 Channel PWM Signal Genenrator

Feature:

Two independent PWM generators can control the frequency, duty cycle

The wide frequency range, high accuracy

Can serial communication

First, the module description:

Frequency is divided into three series:

XXX (no comma): the smallest unit is 1Hz, the range 1Hz -999Hz

XX. X (comma in ten): The minimum unit is 0.1 Khz; the range of 0.1 KHz -99.9 KHz

X.X.X. (there are three commas): the smallest unit is 1 Khz; the range 1 KHz -150 KHz

Frequency display example:

"100" indicates that the PWM output pulse is 100Hz

"54.1" indicates the PWM output pulse of 54.1 KHz

"1.2.4." Indicates that the PWM pulse output is 124 KHz

Duty Cycle in the range: 0 to 100

Three frequency duty cycle is the same, all parameters non-volatile.

Parameter:

Working voltage: 5--30V, support micro USB 5.0 V power supply

Frequency range: 1Hz -150 KHz

The frequency accuracy: ± 2%

Output current: <30mA

Output amplitude: Standard 5Vp-p (adjustable)

Temperature: -30 -70 ° C

Third, the parameter settings:

Module has three buttons [Set], [Up], [Down]

Press [Set] key to display four parameters (FR1: PWM1 frequency; dU1: PWM1 duty cycle; FR2: frequency of PWM2; dU2: PWM2 duty cycle), before the transfer parameters, there will be corresponding parameter name flash.

Press [Up], [Down] keys to set the current parameter value (long press can quickly add or subtract fast).

Two PWM each have three preset frequency, the frequency display interface, long press [SET] key to switch between three types of frequencies, three types of frequency duty cycle is the same value. (XXX: range 1Hz -999Hz; XX.x: range 0.1 Khz -99.9 Khz; X.X.X .: range 1 Khz -150 Khz,).

Fourth, the scope:

As a square wave signal generator that generates a square wave signal;

To send a signal to the stepper motor driver;

Adjustable pulse generation for chip use;

Produce variable pulse signal, the control-related circuit (PWM dimming, speed).

Fifth, the serial

Baud rate: 9600 bps

Data bits: 8

Stop bits: 1

Parity bit: none

Flow control: none

1, set the PWM frequency

"S1FXXXT": setting PWM1 frequency of XXX HZ (001 -999)

"S1FXX. XT": the frequency of PWM1 XX. X KHZ (00.1 -99.9)

"S1F: X.X.X.T": PWM1 frequency setting of XXX KHZ (0.0.1 -1.5.0 ..)

"S1": PWM1

"S2": PWM2

"F": Frequency

'D': Duty Cycle

"T" is the end flag

Set the PWM duty cycle

"S1DXXXT": setting PWM1 duty cycle XXX; (001 -100)

"S2DXXXT": set PWM2 duty cycle XXX; (001 -100)

Successful return setting: DOWN;

Failback setting: FALL.