Difference between revisions of "I2C connector pinout"

From BitWizard WIKI
Jump to: navigation, search
(Connecting the bitwizard boards to an Arduino)
(Connecting the bitwizard boards to an Arduino)
Line 19: Line 19:
  
  
== Connecting the bitwizard boards to an Arduino ==
+
== Connecting the BitWizard boards to an Arduino ==
  
 
{| border=1
 
{| border=1

Revision as of 14:57, 6 April 2012

For the interconnect between I2C masters and the I2C expansion boards BitWizard uses a 4-pin I2C cable.


pin function remark
1 GND Power Ground
2 SDA Serial I2C Data
3 SCK Serial I2C Clock
4 VCC Power 5V.

The connector is laid out as follows:


Connecting the BitWizard boards to an Arduino

pin function arduino pin Arduino Mega
1 GND GND GND
2 SDA A4 (Analog input 4) Digital 20
3 SCK A5 (analog input 5) Digital 21
4 VCC VCC VCC

You could use other pins, but then you have to make a software I2C implementation. This is not too difficult, but might be neccesary if something else is already on the I2C pins.