I am wanting to use the joystick control for two NXT motors. I currently have them set up so they run speed on Y1 and directon on Y2; but the speed is too quick. I used the sample joystick tank drive program and modified it. I don't understand the logic behind...so I am just not getting it to work like I want it too. I tried making the motors just run at 25% speed, but then they didn't have joystick control anymore and were always on.

Here is my current code for that function:

//trying to use tank drive to work claw

nClawPower = joystick.joy2_y1;
nClawDirection = joystick.joy2_y2;
if (nClawDirection < 0)
{
// Turn claw open

motor[TopClaw] = nClawPower; // use power settings from Y-axis
motor[BotClaw] = nClawPower * (64 + nClawDirection) / 64;
}
else
{
// Turn claw shut

motor[TopClaw] = nClawPower; // use power settings from Y-axis
motor[BotClaw] = nClawPower * (64 - nClawDirection) / 64;


Any suggestions would be greatly appreciated!

Take the joystick value and multiply it by a fraction such as *33/100. That way is is stll variable but slower.