Yes, I'll give it a shot. My PIC indeed has invertable USART ports so I'm going to hook it up just like that without transistors but just a few series resistors. The cable is only short. If it doesn't work (which I doubt), I can always use that $3 ebay interface that Dalibor was talking about. I read that most computers these days will already work with 2V signals on the RS232 port, so it's not very critical.
Michel On Aug 25, 1:38 pm, threeneurons <[email protected]> wrote: > I'm with John, if it for personal purposes, and the run is short > (<10ft/3m), you don't need to strictly adhere to the RS-232 spec. Just a > pair of transistor inverters, and label the connectors, "Mickey-Comm", and > you may just get away with 0-5V. Scope it, at your max intended baud rate, > just to make sure the signals aren't badly distorted. If tolerable, your > done, and on to the next project. > > > > > > > > On Friday, August 24, 2012 12:57:14 AM UTC-7, johnk wrote: > > > I thought that the 'dead' band for 232 was -3V to +3V. > > I have used 5V with printers and modems of the 1970s/80s. > > > Some 'cheap' RS232 drivers only used -5V and Gnd. eg the Microbee > > computer. > > > Over short distances all sorts of liberties can be taken - it works; just > > don't call it 232 ! > > > John K > > Australia -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
