I have optimized the design of the RS485 piggyback for the Sunny Boy inverter. An isolated RS485 driver with integrated DC/DC converter is used and replace the external expensive 5V DC/DC converter of the first version.

If there are some people interested in an assembled PCB than I can order a batch of PCBs and start a small production. The price will be around 30 Euros.

RS485 piggyback

 

One Response to New version Sunny Boy RS485 piggyback

  1. Dirk Heiss says:

    Hi,
    I guess you’re using a ADM2587E. Where did you find the pinout for the Sunny Boy piggyback connectors?

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