AVR-Chat

A series resistor was my first solution but it didnt work because of the the 49 Ohm pull up resistor at the other end of the line. when the uC pin set the line low, the output voltage will become a voltage divider and is quite high unless i will use a very low series resistance (compared to 49) which will defeat my purpose. I can not change the 49 Ohm pullup resistor at the other end because it is another system i just want to control.

regards
mago

David VanHorn <microbrix@gmail.com> wrote:                                  There's a lot of unsaid things here, even a series resistor might
 work, depending on what you're doing with the pin.
 
     
                       

       
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