FT232 USB UART Board
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Introduction
USB TO UART solution with USB Type A connector
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Resources
- FT32 USB UART Board Schematic
- USB TO TTL Schematic
- Datasheets
- Software
- Android serial port assistant apk source code details
FAQ
The FT232RL can reach up to 3Mbps.
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The FT232 USB UART Board adopts the official FT232 original chip from FTDI, which can support a variety of operating systems. The drivers for different systems can be downloaded from the official website: www.ftdichip.com/FTDrivers.htm
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You can short-circuit TXD and RXD, and then send data in the serial port debugging assistant Windows to see if there is corresponding data returned, if there is, the function is normal; as shown below:
_FAQ.png)
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The label faces up, the upper row is VCC GND TXD RXD; the lower row is 5V GND CTS RTS, as shown in the figure:
_FAQ03.png)
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Temperature range: -15℃~70℃
Humidity range: 5%RH~95%RH
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Disconnect the power to the external TTL device. A USB serial device should appear. Open the FTDI programming tool, scan for devices, click to program the device, and upon successful programming, it indicates enabling a strengthened 3.3V supply current to the external device.
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1) Overvoltage and overcurrent, electrostatic reverse connection, harsh environment, electromagnetic interference, and other conditions may cause IC damage:
- Overvoltage and overcurrent: When the FT232 chip receives an excessive voltage shock, the connected circuit or peripherals consume more current than its specification range, and the current protection mechanism inside the chip may cause damage.
- Electrostatic reverse connection: When reverse voltage appears between the pins, or when subjected to electrostatic discharge, its internal circuit may be damaged.
- Harsh environment: Using FT232R under high, low, or humid temperature conditions, especially without proper heat dissipation measures, may lead to chip performance degradation, short circuits, or even damage.
- Electromagnetic Interference: A strong electromagnetic interference environment may affect the normal operation of the chip, causing performance problems or even damage.
2) To reduce the risk of chip damage, the following precautions are recommended:
- Use proper supply voltage and current, and avoid over-current and over-voltage conditions.
- Avoid electrostatic discharge, use anti-static measures, such as wearing electrostatic gloves.
- Provide sufficient heat dissipation and temperature control to avoid use under extreme temperature conditions.
- Using Industrial grade products, with the protection of shell, isolation, overcurrent, and overvoltage, it can resist electromagnetic to a certain extent interference.
- USB typically cannot be connected to a microcontroller.
- Unless the microcontroller runs Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7, etc. systems.
- Usually, UART is connected to the microcontroller, and USB is connected to computers, industrial control machines, and other devices.
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Please refer to the following steps to compare and debug:
- Install the driver.
- Replace the USB cable.
- Replace the USB port.
- Replace the computer.
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You can switch between 3.3V and 5V TTL levels with a jumper cap or switch.
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Clear the com port cache: run "regedit", navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\COM Name Arbiter and delete it.
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The 3.3V and 5V TTL levels can be switched through jumpers or switches
Beware of knock-offs
Please note that we've found some poor copies of this item in the market. They are usually made of inferior materials and shipped without any testing.
You might be wondering if the one you're watching or you've purchased in other non-official stores is original, feel free to contact us.
Support
If you require technical support, please go to the Support page and open a ticket.