| Official I2C Specification |
| I²C - Wikipedia |
| i2c-bus.org |
| Search Adafruit for I2C |
| Search Sparkfun for I2C |
| Search Amazon.com for I2C |
| I2C Pullup Resistor Calculations |
| I2C Pull-Up Resistors Calculation & Where to Place Them |
| Texas Instruments: I2C Bus Pullup Resistor Calculation |