Connecting a RS232 converter to an ATTOpilot?

Hi Guys,

I've just tried to connect one of these to my ATTOpilot V3.

I hooked it up like this......

ATTO                                               TTL to RS232

Telm IN -------------------------------------------TX-O

Telm Out------------------------------------------RX-I


                                                       VCC (3.3V input)

The 3.3V is scaled down from 5V like this.

I can't seem to get it to work?

Am I missing something?

Should I connect is differently?

It works great with a FTDI (USB) but I need it to work from a DB9 RS232.

(I want to try it over IP as I have a great little IP to serial converter that I use allot at work)

Thanks in advance!


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  • Hi Scott!

    Do the Tx or Rx LEDs come on?

    Can you check that your 3.3V is in fact 3.3V when it is all powered up - I am worried that using a voltage divider to power a device will not give very good results.


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