Pass through KNX-bus to Serial with H8C09 board

thelsing / knx

knx stack (TP, IP and RF) for arduino and linux, Can be configured with ETS

GNU General Public License v3.0

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Pass through KNX-bus to Serial with H8C09 board #239

Closed mrWheel closed 9 months ago

mrWheel commented 1 year ago

Hi,

Can I use a H8C09 board to simply pass through KNX to an ESP32-KNX device via Serial (Tx/Rx)?

Does anyone have experience with this board and/or this setup?

My ESP32 device now works via WiFi but that is not always reliable.

msfuture commented 9 months ago

The H8C09 has a STM32 processor on board, that is between the KNX and Serial connection. The easiest way without soldering would be to write a sketch, that echoes the KNX serial from the BCU to the Serial and the other way around. As the STM32 does not consume that much energy I think that would be okay...

mrWheel commented 9 months ago

Thanks!

Ing-Dom commented 9 months ago

why don't you use a NanoBCU ? It's smaller and less expensive ?

mrWheel commented 9 months ago

@Ing-Dom .. If only there was some documentation and a reseller ..

Ing-Dom commented 9 months ago

https://github.com/OpenKNX/OpenKNX/wiki/NanoBCU

I sell them. https://muster.ing-dom.de/ but currently DE only, you would have to use LogiX or a similar service.

msfuture commented 9 months ago

Was my first thought too. Best option in combination with ESPs and RP2040s... But I'm from Germany, so no shipping issues...