Regarding to the MAX232 board

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SINDHURI

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Good Morning one and all,

Is it possible to connect a DB9 Connector at the output of the MAX232 Board. Please any one can help me quickly.

Thanks in Advance.
 

For first circuit shard by tpetar, if you want to communicate between your PC and ucontroller you should use null modem connection, google it , its construction is simple.
 

tpetar,


Unless be powered by negative supply instead GND, 2nd circuit will not work due to RS232 standard voltage level requirements.
[-12,-3] <--> [+3,+12]


+++
 


I tried perform mentally a circuit working simulation and did not understand how this capacitor could be reversely polarized.




+++
 

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