NOTE: THIS PAGE IS INCOMPLETE AND UNDER CONSTRUCTION ( JAN 20 2025)
FTDI USB to Serial
A sampling of FTDI modules selling on ebay.
FTDI FT232RL USB to Serial Adapter Module USB to TTL RS232 Cable 6Pin
The ebay ad has a good description of this product
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Red wire： 5V Black wire： GND White wire： RXD Green wire： TXD Yellow wire： RTS Blue wire： CTS |
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GND |
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| https://www.ebay.com/itm/314750094499 | $1.17 | ||
https://www.ebay.com/itm/326276716709
WINDOWS 10
In the above example the FTDI USB to Serial interface cable is on COM3 and an Arduino UNO clone is on COM4
| Ports | Signal |
| COM3 | FTDI USB to Serial Interface Cable |
| COM4 | Arduino USB Cabale ( communicates and supplies power ) |
Port and Power Considerations
The Arduino needs to get power. It can get that from a USB cable to a computer port as above. But once the software is downloaded to the Arduino, it no longer needs to connected to a computer. It is also possible to power the Arduino from a USB power pack or from a 9VD power adapter.
FTDI BOARD ZXPS Serial Connector
GND -------------- GND*
CTS
VCC
TX ---------------- RX
RX ---------------- TX
DTR
NOTE: If the Arduino is powered with a USB cable to the same computer that the FTDI cable is connected to then the FTDI GND connection can be eliminated. (?)
OPEN dEVICE mANAGER