Posted: Wed Apr 22, 2015 11:24 am Post subject: Schematics and firmware source available?
Are the schematics, and perhaps even the firmware sources available anywhere?
I've been looking to build my own isolated multiplexer, but it seems that I'll end up simply buying one (cheaper if I count my own time). This one seems like a great product, but I'm wondering how the galvanic isolation is implemented (partly because I'm curious, partly because I wonder if it was done right - there's a lot of schematics out there that simply connect the NMEA wires to an optocoupler which, AFAICS, does not constitue a proper balanced RS422 receiver). Having a schematic available would be great.
As for the firmware - It would be great to have the option for my own customizations, especially now I noticed that it uses an AVR chip (which I'm very familiar with). I don't have any particular customizations in mind, but some might pop up at some point.
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