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john30 / ebusd-esp

Firmware for ESP8266 allowing eBUS communication for ebusd (https://github.com/john30/ebusd)
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no eBUS signal with Protherm Skat #49

Closed hryamzik closed 2 years ago

hryamzik commented 2 years ago

Hardware:

NodeMcu v1.0 Protherm Skat 9

Using all the defaults and RX/TX pins I get the following status:

Chip ID: 007a55a0
Hostname: ebus-7a55a0
Up time: 72
Free heap: 34736
ebusd connected: no
eBUS signal: no signal
eBUS initial signal: echo

And heater fails to f.49 error, according to manuals description is Short circuit on the eBus, overload on the eBus or on the eBus 2 of a voltage source with different polarity.

Any ideas how to debug this?

UPD: I've just found a note that voltage on EBUS should be 15-24 Volts, not sure how to properly archive this. UPD: Looks like I miss the ebus adapter, it wasn't clear for me that ESP can't drive the bus directly.

john30 commented 2 years ago

yes, you need an adapter like this to gain access to the bus signal

hryamzik commented 2 years ago

Thanks, I've already placed my order!