![]() The I2C bus is commonly used by digital sensors. We also learned about using the wire library to communicate with the Inter-integrated circuit or I2C devices using Arduino boards. Wire.In the previous tutorial, we covered the I2C bus in Arduino. Wire.write(val++) // sends potentiometer value byte Wire.write(byte(0x55)) // sends instruction byte ![]() Wire.beginTransmission(44) // transmit to device #44 (0x2c) Wire.begin() // join i2c bus (address optional for master) If I reduce the transmission to just the step #2 instruction single data byte, the same result is shown. The 2 data bytes are not being transmitted. The only byte I can see in my oscilloscope is just the first one (please see picture below).
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