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I'm planning to wire a few Arduinos together via RS485, and have one of them act as a hub that collects information from the others and presents it via http on an Ethernet connection.

For instance an Aduino MKR with ETH shield and 485 shield. Can I expect these to work together? My worry is having 2 shields that potentially need lots of bandwidth, timing issues etc.

  • no problem for MKR – Juraj Jul 26 at 15:13
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Should be no problem.

The ETH shield uses SPI to communicate with a W5500 chip. That chip does most of the network processing for you.

The 485 shield just connects to the UART TX and RX pins. It's just serial communications with a couple of control pins from there on out.

Neither use any pins that the other one uses.

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