ماژول PWM ژنراتور دو کاناله به همراه نمایشگر

معرفی

توسط این ماژول می توان به طور همزمان 2 کانال PWM داشت همچنین این ماژول قابلییت اتصال به درگاه سریال را دارا بوده و توسط میکروکنترلر یا کامپیوتر می توان مقدار Duty Cycle و فرکانس و غیره را ست کرد.

مشخصات

• ولتاز کاری: 5 الی 12 ولت
• پشتیبانی از ولتاژ 5 ولت میکرو USB
• رنج فرکانس تولیدی: 1 هرتز الی 150 کیلو هرتز
• دقت فرکانس تولیدی:2 درصد
• قابلیت اتصال به بارهای 8 الی 39 میلی آمپر
• ابعاد:43×29(mm)

Introduction

Frequency is divided into three ranges:
XXX (no decimal point):the smallest unit is 1Hz,the range 1Hz-999Hz
XX.X (decimal point in ten): The minimum unit is 0.1Khz; the range of 0.1KHz-99.9KHz
X.X.X.(there are three decimal point): the smallest unit is 1Khz; the range 1KHz-150KHz
“100” indicates that the PWM output pulse of 100Hz
“54.1” indicates that the PWM output pulse of 54.1KHz
“1.2.4.” Indicates that the PWM pulse output 124KHz
Duty Cycle in the range:0 to 100
Three frequencies duty cycle is the same, all the parameters non-volatile

Specification

1. Two independent PWM outputs, which can set the frequency and duty cycle respectively;
2. Wide frequency range and high precision;
3. Serial communication
First, the module description
Two independent PWM outputs, which can set the frequency and duty cycle respectively;
It is divided into three frequency ranges :
1.  XXX ( no decimal point ) : The minimum unit is 1Hz , and the value range is 1Hz~999Hz ;
2.  XX.X ( decimal point is ten ) : The minimum unit is 0.1Khz ; the range is 0.1 K H z~99.9K H z
3.  XXX ( three digits have a decimal point ) : the minimum unit is 1Khz ; the value range is 1K H z~150K H z
Eg frequency display: 100 means PWM output 100Hz pulse;
54.1 represents the PWM output 54.1K H Z pulse;
1.2.4. Represents a PWM output 124K H Z pulse
The duty ratio ranges from 0 to 100 ;
The three frequency ranges share a duty cycle, and all setting parameters are saved after power down.

1. Working voltage: 5–12V supports micro USB 5.0V power supply;
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 8–30ma ;
5. Output amplitude: default 5V V-pp (can be changed by external power supply);
6. Ambient temperature: -30~+70 °C.

Instruction

The module has three buttons: Set , Up , Down ;
1. By briefly pressing the [ Set ] key , the display of four parameter values (FR1 : PWM1 frequency ; d U1 : PWM1 duty cycle ; FR2 : PWM2 frequency ; dU2 : PWM2 duty cycle ) , there will be a corresponding switch The parameter name flashes prompt.
2. Press [ Up ] and [ Down ] directly to modify the current parameter value ( long press can be added quickly or quickly).
3. The two PWMs are pre-configured with three kinds of frequency values. In the frequency display interface, the long-pressing [ SET ] key is used to switch, and the duty ratios of the three frequencies are the same . ( XXX: range 1Hz ~ 999Hz ; XX.X : the range of 0.1 Khz ~ 99.9Khz ; XXX : range 1Khz ~ 150 Khz , ) .

Five , serial port control
Communication standard : 9600 bps
Data bits : 8
Stop position : 1
Check digit : none
Flow control : none

1,  set the frequency of the PWM
“ S1FXXXT ” : Set the frequency of PWM1 to XXX HZ ( 00 1~999)
“ S1FXX.XT ” : Set the frequency of PWM1 to XX.X KHZ ( 00. 1~99 . 9)
“ S1F: XXXT ” : Set the frequency of PWM1 to XXX KHZ ( 0.0. 1 . ~1 . 5 . 0 . )
‘ S 1 ‘ : PWM1
‘ S 2 ‘ : PWM2
‘ F ‘  : frequency
‘ D ‘ : duty cycle
‘ T ‘  is the end flag
2,  set the duty cycle of the PWM
“ S1DXXXT ” : Set the duty ratio of PWM1 to XXX ; ( 00 1~100)
“ S2DXXXT ” : Set the duty ratio of PWM2 to XXX ; ( 00 1~100)
Set the success to return: DOWN ;
Setting failed to return: FALL .