Having some trouble getting the motor to operate. New to robotc and the FTC equipment
Based our hookup on the testbed1 sample program but the simplified to a single motor continuous run without the button
We have the HiTechnic DC motor controller and DC motors ( silver gearmotors, not LEGO)
Have. downloaded firmware to NXT
Have specified platform as Lego mindstorm nxt+ tetrix
Battery charged, power light on

Simple program

motor[motorD] = 25

Program compiles and uploads to NXT
program visible in NXT,
can run from computer console and from nXT keypad. Shows running

seems to be running but motor does not turn
Any suggestions

Please post your entire code including the #pragma's.

#pragma config(Hubs, S1, HTMotor, none, none, none)
#pragma config(Sensor, S2, touch, sensorTouch)
#pragma config(Motor, mtr_S1_C1_1, motorD, tmotorNormal, openLoop)
#pragma config(Motor, mtr_S1_C1_2, motorE, tmotorNormal, openLoop)
//*!!Code automatically generated by 'ROBOTC' configuration wizard !!*//

task main()
{



motor[motorD] = 25; //...spin Motor D at 25% power.


}

Several things to check:
- make sure the motor controller is indeed connected to sensor port 1 (S1).
- make sure the motor controller is powered (red light on).
- make sure the Tetrix motors are connected to "motor" terminals correctly and securely.
- change the motor power to higher values to at least 50 (or even 100). 25 is usually very weak and may not move the robot if your robot is heavy.
- add a line to turn on motorE as well, in case motorD is fried.
- make sure the program is indeed downloaded to the NXT and is running.

That's all I can think of at the moment.

try this:

Ah yes, forgot that the motor will turn off if your program ends. So the while loop will keep it powered.

Thank you for the insight. The students covered your suggestions and within 10 min were programming movement and within an hour, programming complex movement. BTW this is Woodward Academy in College Park GA. a Middle school team. FIRST FTC. and first year team.