Difference between revisions of "I2C connector pinout"
From BitWizard WIKI
(Created page with " For the interconnect between I2C masters and the I2C expansion boards BitWizard uses a 4-pin I2C cable. {| border=1 ! pin !! function !! remark |- | 1 || GND || Power Grou...") |
(→Connecting the bitwizard boards to an Arduino) |
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| Line 22: | Line 22: | ||
{| border=1 | {| border=1 | ||
| − | ! pin !! function !! arduino pin | + | ! pin !! function !! arduino pin !! Arduino Mega |
|- | |- | ||
| − | | 1 || GND || GND | + | | 1 || GND || GND || GND |
|- | |- | ||
| − | | 2 || SDA || A4 (Analog input 4) | + | | 2 || SDA || A4 (Analog input 4) || Digital 20 |
|- | |- | ||
| − | | 3 || SCK || A5 (analog input 5) | + | | 3 || SCK || A5 (analog input 5) || Digital 21 |
|- | |- | ||
| − | | 4 || VCC || VCC | + | | 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. | 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. | ||
Revision as of 15:57, 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.
