The only thing that worries me is the possibility of reduced reliability due to the series resistors.
|
The only thing that worries me is the possibility of reduced reliability due to the series resistors.
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
|
74ls 425/426 ???
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
|
Cant seem to find any info on the 74LS425/426 chips.
But I think i'll pick up a 74LS139. The data sheet says its designed for high speed data, so it should be perfect.
I still have no idea why my circuit in my OP does not work tho. As far as I can tell, it should.
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
|
How outlandish is this idea?
I notice you only want to transmit, not receive.
So, how about sending the same data to *both* your recipients, with an extra starting character that acts as a qualifier that decides which of the recipients would accept the data as valid? Assuming, of course, that you are in a position to modify the code at the target units as well.
Regards,
Anand
|
Maybe because the 2 units can't be altered... my own and personal guess
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
|
Unfortunately I can't change the code of the targets.
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
|
How frequent would the changeover(s) be?
If not too often, how about using a small relay with its n/o, n/c contacts?
Anand
|
Any specific reason why you don't want to use any Software Serial command (DEBUG, SEROUT, SEROUT2) ?
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
|
Switching is likely to be once per second or so.
I would much prefer a solid state solution.
I'm thinking the 74LS138 multiplexer is the way to go.
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
Members who have read this thread : 0You do not have permission to view the list of names.
Posting Permissions
Bookmarks