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Why not talk to a PIC in the module using I2C?? After all, the track is two wires.
You could modulate this on top of a standing DC voltage then control a motor using hard coded addresses on the loco module PCB and an H bridge driven by the PWM from the PIC.
Just a thought. I tried it and it worked fine. Be careful of the need to filter the I2C signals HEAVILY but not so much that you lose them.
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Interesting concept, sort of a cross between modern DCC and traditional control. However, its not practical in this instance as the contoller is for a club layout and would mean that every member would have to have the same system installed on their own layaouts at home. Also with the scale, fiting modules to small loco's is a pain in the ***
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Food for Brain ...
Hi Malc,
I Had my father home this week-end ...
We talked about supplies and it seems the today's "must" is to use switching supply during speed transitions ( or accelerations ) and DC during constant speed running ( of course for noize !!! ) ...
That meets one of Sougata's threads about signal generation with a Pic ... and opens interesting reflexion and work about what output stage to use !!!
new challenge for Darrel !!! ( He Looooooves !!!! )
Alain
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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