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Is it possible to add Arduino to OpenEVSE v4?

Good day! I have OpenEVSE v4. Is it possible to additionally connect Arduino (UNO) and arrange data exchange between them? The garage where I charge the car is outside the WiFI network, so I want to connect the GSM module to the Arduino UNO and control the charging process via mobile communication. Is it possible? I need to know exactly the possibility of connecting OpenEVSE and Arduino. Thank you in advance for your cooperation!

Yes, OpenEVSE uses the same microprocessor as the Arduino UNO the Atmel 328p. So it basically the same as connecting two UNOs together.

The easiest way to connect is with serial, but you could also use SPI or I2C.

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Thank you!

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