Editing esp (section)

===I2C (Wire library)===
Wire library currently supports master mode up to approximately 450KHz.<br>
Before using I2C, pins for SDA and SCL need to be set by calling '''Wire.begin(int sda, int scl)''', i.e. Wire.begin(0, 2) on ESP-01, else they default to pins 4(SDA) and 5(SCL).<br>

if you have a problems with conflicting I2C addresses use an [[https://learn.adafruit.com/adafruit-tca9548a-1-to-8-i2c-multiplexer-breakout/overview I2C multiplexor]]. You can run 8 devices with the same address of a single hardware I2C interface rather than using software I2C
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