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danielkucera / esp-arduino-ebus

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Power problem - Wolf #63

Open TFIPS opened 5 months ago

TFIPS commented 5 months ago

When I connect the adapter to my Wolf boiler, the voltage on the eBus collapses. According to Wolf, a participant should use a maximum of 18mA. The adapter exceeds this limit. According to my measurements, these are always only peaks, for example, when the Wi-Fi is connected. Could the problem be resolved by using larger capacitors? If so, which of the two would need to be increased?

danielkucera commented 5 months ago

Hello @TFIPS , there has been a similar issue in the past: https://github.com/danielkucera/ebus-adapter/issues/7 You can try adding a capacitor between 3V3 and GND on the pin header.

TFIPS commented 5 months ago

Hello @danielkucera, thank you very much for your prompt response. For now, I've added another 100 microfarad capacitor in parallel, and it's already working. Perhaps this issue could be addressed in the next hardware revision.

danielkucera commented 5 months ago

That's great to hear. I will consider replacing the original 100u/35V on 3V3 rail with 470u/6.3V . Please let me know in some time how well does it work over longer period. Thank you.

danielkucera commented 4 months ago

Hi @TFIPS , did the capacitor solve the issue long term?