I realize this could also go in the development section, but I have seen hundreds of posts related to RS-485 in this section over the last few months. Full disclosure: this is my own kickstarter project.
I have been working on an daisy-chain arduino variant with built-in RS-485 and PoE for several months now. If you are interested in connecting arduinos with RS-485, check it out. it will be open-hardware after the kickstarter.
Hmm..very usefull, and with the Mega2560 ,a new door was opened...Good job..Are all the parts involved in this design with industrial grade working temperature?
I was wondering, has anyone (including the developer) come up with a way of programming over the RS485 connection?
I mean usually that is one of the functions of a RS485 connection in industrial equipment. It would be golden to be able to connect to the network and upload a sketch to a remote unit from one access point. (Think hard to get to)
It would be a bear to go pull out chips or sit in a crawlspace/attic with a laptop trying to get to remote units.
One way: add some hardware to recognize some special data stream from the RS485 that would then Reset the board so the bootloader would start up and listen for RS485 data to load with.
Hardware would be different if the connection was full duplex vs half duplex (simplex) so the device could control when it transmits back as needed.
