โมดูล USB TTL CP2104 Serial Converter USB 2.0 To TTL UART 6 Pins Module พร้อมสายไฟ

โมดูล USB TTL CP2104 Serial Converter USB 2.0 To TTL UART 6PINS Module

โมดูล USB TTL CP2104 Serial Converter USB 2.0 To TTL UART 6PIN Module
สำหรับใช้เบิร์นโปรแกรมลง Arduino ที่ไม่มีพอร์ท USB เช่น Arduino Pro Mini
หรือใช้ติดต่อสื่อสารกับอุปกร์ทาง USB to Serial ผ่านทาง Serial Port 

ตัวนี้ใช้ชิฟ CP2104 เป็นชิฟรุ่นใหม่ที่ดีกว่ารุ่น CP2102 ซึ่งสามารถใช้แทนกันได้เลย มี 6 ขา รองรับ Auto Reset ของ Arduino Pro mini ไม่ต้องกดปุ่ม reset เอง ใช้ได้กับ Arduino Pro Mini ทุกรุ่น
บทความของร้าน Arduitronics.com เรื่องการใช้งาน USB to UART กับ Arduino Pro Mini 

https://www.arduitronics.com/article/arduino-pro-mini-how-to-upload-sketch

Tips (very important):  USB TTL ตัวนี้มี 6 Pin

• TXD: the sender, the general said the sending end, the normal communication must be connected to another device RXD.
• RXD: the receiving end, generally expressed as the receiving end, the normal communication for must be connected to another device TXD.
• Normal communication itself TXD is always connected to the RXD!
• Collected spontaneously: normal communication, the TXD RXD take other equipment, so if you want to receive their data sent the name

• suggests, is receiving the data sent, that own directly connected to the RXD TXD is used to send and receive test itself is normal, is the quickestand simplest test method, first do the test to determine whether the failure of the product when problems arise. Also known as the loopback test.

Level logic:

TTL level: usually binary, requiring +5 V equivalent to the logic "1", 0 V is equivalent to a logic "0", referred to as TTL signal system is the positive logic
The RS232 level:-12V to-3V, which is equivalent to logic "0", +3 V to +12 V, the logic level is equivalent to logic "1" is negative logic,

Product Description:

1, the main chip CP2102, install the driver generates virtual serial port
2, USB to take power, and interface 3.3V (<40mA) 5V, GND, TX, RX, the signal pin level is 3.3V, positive logic
Board status indicators, transceiver LED status indicator lit, install the correct drivers, transceiver indicator flashes when communication baud rate the higher the lower the brightness
4, support the baud rate from 300bps to 1Mbps
Communication format support: 1) 5, 6, 7, 8 data bits; 2) support for 1, 1.5, 2 stop bits; 3) odd, even, mark, space, none parity
6, support for the operating system: Windows Vista / xp / Server 2003/200 Mac OS-X/OS-9, Linux
USB head is male, can be directly connected to the computer USB port
Chip components for SMT process production, quality and stability

Note:

The USB to serial STC old version of the microcontroller with STC-ISPV3.94 above (LE) Series (new version STC89C (LE) and stc12c chip may not be able to download, users of the software on the maximum and minimum Potter rate is set to the same can be downloaded, we do not have to do to ensure your own discretion) (STC-ISP Download : http://www.mcu-memory.com/datasheet/stc/STC -ISP-V4.83/STC-ISP-V4.83-NOT-SETUP-CHINESE.EXE, after downloading unzip to) see, this is not the driver!      

Download the STC microcontroller steps: TXD received MCU RXD RXD connected microcontroller TXD, GND connected to GND, 5V connected to VCC, point to download the software, and then say four feet above the plug into the microcontroller. (Note: the MCU must have a basic working conditions, including the power, reset and clock! The microcontroller TXD RXD not followed other peripheral devices, including MAX232 do not answer, otherwise it will cause the download fails!! During this period, please Do not disconnect the connection of the module to the computer!)

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