Reading the spec sheet for the controller, the range for the speed goes from -100 to 100. 45H and 47H are power for each motor. So here is how I think I would write the code:
#include <Wire.h>
byte speed = 100;
void setup()
{
Wire.begin(); // join i2c bus
}
void loop()
{
Wire.beginTransmission(0x02); // transmit to device #44 (0x2c)
// device address is specified in datasheet
Wire.write(speed); // sends value byte
Wire.endTransmission(); // stop transmitting
delay(500);
}
That should send 100 to address 0x02 every half second, but how does it know to set motor one to 100? Do I have to send a string of data?