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4 votes
Accepted

How to read from and write to rs232 device from/to Arduino

You didn't show how you connected the MAX3232, so I cannot say anything about that. But I can write something about your code and how the data gets received on the PC. On the PC: Here it is important ...
chrisl's user avatar
  • 16.5k
3 votes
Accepted

MAX232 chip fails to initialize properly with arduino

Datasheet for MAX232 Section 7.3 Recommended Operating Conditions VCC Supply voltage MIN=4.5, NOM=5, MAX=5.5 (V) The MAX232 has a minimum supply voltage of 4.5V, typically expecting 5V. ...
jose can u c's user avatar
  • 6,974
2 votes

How to read from and write to rs232 device from/to Arduino

Hi and welcome to the wonderful world of Arduino. It appears that you have picked-up Arduino with ease. Your program is almost there. Your wiring connection diagram looks to be correct. When I am ...
sa_leinad's user avatar
  • 3,198

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