title: Arduino, MAX232, how to control RTS
body: <p>I'm trying to send some data to a device which is connected to my arduino using a db-9 connector. I created the following setup:
  <a href="http://arduino.cc/en/Tutorial/ArduinoSoftwareRS232" rel="nofollow">http://arduino.cc/en/Tutorial/ArduinoSoftwareRS232</a></p>
  
  <p>It seems that the other device is expecting RTS to go from -5V to +5V and have RTS +5V while sending. Is it possible to adjust my setup to control RTS this way? Do I need some addition components on my board to do this?</p>
  
  <pre><code>default: RTS = -5V
  start sending data: RTS = +5V
  sending data: RTS = +5V
  finished sending data: RTS = -5V
  </code></pre>
  
  <p>I tried to connect RTS and CTS but that did not do the trick because I have to change RTS  on my side first.</p>
  
  <p>Any suggestions?</p>