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upd readme & pcb

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Yurii
2023-09-21 23:09:47 +03:00
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README.md
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Housing for installation on DIN rail - D2MG. Occupies only 2 DIN modules.<br>
The 220V > 5V power supply is already on the board, so additional power supplies are not needed.<br>
To save money, 2 levels are ordered as one board. After manufacturing, the boards need to be divided into 2 parts - upper and lower. The boards are inexpensively ($2/5pcs) manufactured at JLCPCB.<br><br>
To save money, 2 levels are ordered as one board. After manufacturing, the boards need to be divided into 2 parts - upper and lower. The boards are inexpensively ($2/5pcs) manufactured at JLCPCB (Remove Order Number = Specify a location).<br><br>
Some components can be replaced with similar ones (for example use a fuse and led with legs). Some SMD components (for example optocouplers) can be replaced with similar SOT components.<br>Most of the components can be purchased inexpensively on Aliexpress, the rest in your local stores.<br><br>
The outdoor temperature sensor must be connected to the **TEMP1** connector, the indoor temperature sensor must be connected to the **TEMP2** connector. The power supply for the sensors must be connected to the **3.3V** connector, GND to **GND**.<br>
**The opentherm connection polarity does not matter.**