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Versions of OTGW
tjfsteele edited this page Jan 18, 2022
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The original hardware design was by Schelte Bron back in 2009. More details: https://otgw.tclcode.com/index.html#intro
This firmware runs on an ESP8266 attached to the OTGW serial port. We recommend the Nodo Shop kit which is designed to accept a WeMos D1 Mini. https://www.nodo-shop.nl/nl/48-opentherm-
There have been several different versions of the OTGW made by Nodo Shop:
| PCB version | Features | Documentation |
|---|---|---|
| <2.0 | 24V |
Dutch English |
| 2.0 | 24V | English |
| 2.3 | 5V | English/Dutch |
On versions older than 2.3 there are jumpers that need to be set correctly. If not, the firmware will be unable to communicate with the OTGW.