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dual real RS-232 port with netduino ( not TTL )

dual real RS-232

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#1 OneManDo


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Posted 01 January 2013 - 10:59 AM



I have a need to create a mini 'buffer for serial messages'  using the netduino, SD and COM1 & COM2

I need a dual RS-232 serial port shield.



it's look somthing like this:


COM1 -> SD micro -> COM2



Any one ever use 2 RS-232 port with netduino?



#2 Mario Vernari

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Posted 01 January 2013 - 11:20 AM

What should be the problem?

You need two TTL-to-RS232 shields and a Netduino Plus or Plus 2 (that's because you want the SD). Afterward you have to write the software application that manages the ports.

The only question you should ask yourself is about your messages: if they're are running very fast/frequently, maybe a Netduino won't be able to deal with them.

Also bear in mind that the MF does not manage the RS232 handshake signals: just TXD and RXD.


Biggest fault of Netduino? It runs by electricity.

#3 NooM


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Posted 01 January 2013 - 11:24 AM

_one_ max232 can do that conversation from 12v to 5 than do whatever you want with your data on the netduino than back to 12v

it has 2 ports

#4 OneManDo


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Posted 01 January 2013 - 11:37 AM


I know that by now.... but I am trying to a void wires and soldering of external components & PCB

when no other option I will use 2 TTL<->RS232 PCB...


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