[Music] i2c or II is a flexible communication protocol which allows certain modules from manufacturers like Whimsical wraps and monom to send commands to each other digitally which opens up possibilities that 3 and2 mm patch cables can't facilitate this digital network is described as a bus and setting up an i2c bus is pretty straightforward it requires the connection of three matching headers across each module using jumper wires wires most commonly used are linked in the video's description to reduce the risk of drop data just be sure to get ones that are around 6 to 8 in in length most modules have two vertical Columns of pins but we only need to use one column per connection this allows us to daisy chain one module to the next we always want to connect the pins in vertical order from the ground pin which is often marked with a white line on the circuit board two modules may have the same orientation like Crow and wi where ground is the topmost PIN some modules may go bottom up either way to ensure successful connection we'll pay close attention to connecting in order from ground so we'll go ground to ground middle pin to Middle pin and the last remaining pin to the last remaining pin and that's it be sure to check this video's description for additional written documentation and a buy link for jumper wires