RS232 Board

RS232 Board RS232 communication board, SP3232 on board, 3V-5.5V, ESD enhanced, hardware flow control supported

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Primary Attribute Category: Modules, RS232/RS485/CAN {{{userDefinedInfo}}}: {{{userdefinedvalue}}} Brand: Waveshare

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Onboard Interfaces UART

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Introduction

RS232 communication board, SP3232 on board, 3V-5.5V, ESD enhanced, hardware flow control supported.

More

Resources

• Schematic
• Datasheets
• Software
• 3D Drawing

FAQ

Question:Using the RS232 Board, the sending and receiving ends are short-circuited, and there is no way to perform a loopback test using serial port debugging?

 Answer:

VCC, GND needs an external power supply, 3V-5.5V.

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Question:Using the RS232 Board, can the loopback test be performed but no data is received when connected to the MCU?

 Answer:

Note the following connections:

RxOUT: connect to MCU.RX (signal flow: MCU.RX << SP3232 << PC.TX )
TxIN: connect to MCU.TX (signal flow: MCU.TX >> SP3232 >> PC.RX)
Simply put, if the traditional RxOUT is connected to the TXD, and the TxIN is connected to the RXD and cannot be used, try switching it. That is, RxOUT is connected to RXD, and TxIN is connected to TXD.

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Question:Does the voltage of the supply affect the level range of ttl tx and rx?

 Answer:

If the power supply is 3.3V, then the corresponding TTL level is also 3.3V level.

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Question:What is the RS232 Board pin pitch?

 Answer:

2.54mm.

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Question:How to connect it to the Raspberry Pi?

 Answer:

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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.

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