Go Down

Topic: FTDI and MAX232 (Read 1 time) previous topic - next topic

What is the main use of the MAX232? If a FTDI chip us used with a USB connector, will I need to use the MAX232?
arduino-freelancer.blogspot.com

johnwasser

The MAX232 make a 0v=LOW 5V=HIGH TTL serial signal compatible with an +12V=LOW -12V=HIGH RS232 serial port.  Generally you would use the FTDI chip if your PC has a USB port and the MAX232 chip if your PC has a 9-pin (or 25-pin) D connector serial port.
Send Bitcoin tips to: 1L3CTDoTgrXNA5WyF77uWqt4gUdye9mezN
Send Litecoin tips to : LVtpaq6JgJAZwvnVq3ftVeHafWkcpmuR1e

cyclegadget


  Can anyone tell me if a MAX232 can make a 0v=LOW 5V=HIGH TTL serial signal compatible with an +12V=LOW 0V=HIGH RS232 serial port?

  I know I can do it with an LM393 and some resistors but, it seems that the MAX232 might be a more simple arrangement if it could be made to work.

Thanks,
Mark
Good links: Eagle tutorial= http://www.youtube.com/playlist?list=PLDE1858BD83D19C70
General Arduion tutorials = http://tronixstuff.wordpress.com
http://www.gammon.com.au/forum/bbshowpost.php?bbtopic_id=123

Grumpy_Mike

Quote
compatible with an +12V=LOW 0V=HIGH RS232 serial port?


Well that is not an RS232 serial port. What do you have?

If you want the signals at the voltage level then just a single transistors.

cyclegadget


It is a motorcycle obd2 port basically. Thanks for input Grumpy Mike.
Good links: Eagle tutorial= http://www.youtube.com/playlist?list=PLDE1858BD83D19C70
General Arduion tutorials = http://tronixstuff.wordpress.com
http://www.gammon.com.au/forum/bbshowpost.php?bbtopic_id=123

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy