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Topic: Arduino board DB9 socket (Read 1 time) previous topic - next topic

nightcrawler218

I want my homemade arduino to communicate with my PC. Do I need a max32 chip in this diagram??? Isn't there the chip missing for the RS232 communication..?
http://arduino.cc/en/Main/ArduinoBoardSerialSingleSided3
http://arduino.cc/en/uploads/Main/ArduinoSeverinoSchematic.png

Kindly explain how to connect this board to my pc..? Without the RS232 how is that possible in the diagram.? I am a bit confused.
"Imagination is more important than knowledge."
-Einstein

nightcrawler218

This arduino schematic has RS232 (max32) chip in the circuit

http://www.vintagecomputercables.com/img/freeduino_serial_v2_schematics_L.jpg

but the above schematic (1st post) dont have the RS232 chip, so its a bit confusing. kindly assist.

thanks.
"Imagination is more important than knowledge."
-Einstein

Graynomad

Current Arduinos do not have any RS-232 serial, they communicate to the PC using USB.

On the PC end it looks like a virtual serial port.

_____
Rob
Rob Gray aka the GRAYnomad www.robgray.com

nightcrawler218

yes I know that sir, but actually I have max232 chips & DB9 socket pair in my inventory. So I want to make some useful things out of it.
"Imagination is more important than knowledge."
-Einstein

Graynomad

Your question was

Quote
I want my homemade arduino to communicate with my PC. Do I need a max32 chip in this diagram?


The answer is no, you don't need a MAX232 chip, these days you would use an FTDI232 chip and talk using USB.

Quote
I have max232 chips & DB9 socket pair in my inventory. So I want to make some useful things out of it.

Now you are saying that you have these components and want to find a use for them, that's a different issue.

Yes you could connect them to an Arduino and talk to a PC, but do you actually have a computer with an RS-232 port?  They are few and far between these days.

If you don't and you really want to use the chip then you will have to find something that talks RS-232 and connect to that.

So what is the end goal, to talk to a PC, to use RS-232 with anything, or to talk to a PC using RS-232?

_____
Rob
Rob Gray aka the GRAYnomad www.robgray.com

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