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no, the Z-uno2 version in "Boards Manager" ... https://z-uno.z-wave.me/arduino-install/

Which software version do you use? With larger v 3.0.7 an EEPROM problem was fixed.

I can only say what the developers have communicated. Actually they talked about a 1kByte EEPROM, but that doesn't fit exactly to the layout.
But my tests indicate that it can write up to 0x400, after that i only get 0 back.

An example looks like this, but is equal to the V1. Serial.println("Reading buffer from EEPROM..."); res = EEPROM.get(addr, &read_data, sizeof(read_data)); Serial.print("Read "); Serial.print(res); Serial.println(" Bytes"); // write data to a specific address res = ...

NO, the z-uno2 no longer has an external EEPROM. Thus less memory is available.

Hi Alex,
a first quick test worked. Thank you for the quick solution to the problem. Very good support.

compiler dumpNVM: I almost thought so. But it was only an attempt, there is no other information for the V2. I start at 0x0 and use 3.0.7. The code has always worked, from "one moment to the other" the EEPROM loses the content on reset/restart. (after experiment with factory reset, think) ...

Although it worked for a long time, I can no longer write to the EEPROM. The function is executed, after a reset all EEPROM memories are 0 again. Because of some include problems and tests the Z-Uno was provided with factory reset and bootloader updates..... Apparently after that the EEPROM write wa...

Why is z-uno2 not registered with https://products.z-wavealliance.org yet? This means that z-uno2 is not recognized with its "possibilities" in Smarthome systems. It is only marked as "unknown". Type ID: 0x0110 vs 0x0210

Thank you, I did not know that. In all (old) examples port 18 is used.