Subject:
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Re: Light Sensors
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 7 May 2000 22:13:45 GMT
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Original-From:
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Michael Cooper <MCOOPER@UVICavoidspam.CA>
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Viewed:
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821 times
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Hey Grant,
I found a few problems in your code. Change the #ifdef block to be
#ifdef __RCX
SetSensor(SENSOR_1, SENSOR_LIGHT); // SENSOR_TYPE_LIGHT isnt a
valid type for SetSensor you need to USE SENSOR_LIGHT ( check the NQC
documentation for types)
SetSensor(SENSOR_3, SENSOR_LIGHT);
SetSensorMode(SENSOR_1, SENSOR_MODE_RAW); // samething here
SENSOR_MODE_XXXXX is only valid as an argument to SetSensorMode
SetSensorMode(SENSOR_3, SENSOR_MODE_RAW);
SetSensorMode(SENSOR_2, SENSOR_ROTATION);
#endif
and your sensors should work properly. (I use NQC v3.1 and LegoFirmware Ver
0322)
~Mike
----- Original Message -----
From: "Grant Elliott" <Keysdezes@hotmail.com>
To: <lego-robotics@crynwr.com>
Sent: Sunday, May 07, 2000 8:05 AM
Subject: Light Sensors
> I've just started using NQC, and I seem to have developed a bit of an • unusual
> problem. The little red LED's on my light sensors no longer turn on when
> connected to the RCX. They still work if I plug them into my Control Lab • (The
> computer linked interface box that came out years before Mindstorms.), yet • I
> can't get them to even turn on with the RCX. Obviously, this has • prevented me
> from... doing much of anything. Help would be appreciated.
>
> Here's the code I'm using. There are two light sensors mounted on the • front,
> and an angle sensor linked to the rack and pinion steering. One motor
> controls the drive wheels. The other drives the steering. Somehow, I • doubt
> this explains why the sensors won't turn on, but it might...
>
>
> #define L_EYE SENSOR_1
> #define R_EYE SENSOR_3
> #define DIR SENSOR_2
> #define DRIVE OUT_A
> #define STEER OUT_B
>
> int L_Norm;
> int R_Norm;
>
> task main()
> {
> #ifdef __RCX
> SetSensor(SENSOR_1, SENSOR_TYPE_LIGHT);
> SetSensor(SENSOR_3, SENSOR_TYPE_LIGHT);
> SetSensor(SENSOR_1, SENSOR_MODE_RAW);
> SetSensor(SENSOR_3, SENSOR_MODE_RAW);
> SetSensor(SENSOR_2, SENSOR_ROTATION);
> #endif
> L_Norm = L_EYE;
> R_Norm = R_EYE;
> SetPower(STEER,3);
> SetPower(DRIVE,8);
> ClearSensor(DIR);
> On(DRIVE);
> while(true)
> {
> if ((L_EYE - L_Norm) > 20)
> {
> Rev(DRIVE);
> OnFor(DRIVE,100);
> Fwd(STEER);
> while(DIR<5)
> {
> On(STEER);
> }
> Off(STEER);
> Fwd(DRIVE);
> OnFor(DRIVE,200);
> Rev(STEER);
> while(DIR!=0)
> {
> On(STEER);
> }
> On(DRIVE);
> }
> if ((R_EYE - R_Norm) > 20)
> {
> Rev(DRIVE);
> OnFor(DRIVE,100);
> Rev(STEER);
> while(DIR > (0 - 5))
> {
> On(STEER);
> }
> Off(STEER);
> Fwd(DRIVE);
> OnFor(DRIVE,200);
> Fwd(STEER);
> while(DIR!=0)
> {
> On(STEER);
> }
> On(DRIVE);
> }
> }
> }
>
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Message is in Reply To:
 | | Light Sensors
|
| I've just started using NQC, and I seem to have developed a bit of an unusual problem. The little red LED's on my light sensors no longer turn on when connected to the RCX. They still work if I plug them into my Control Lab (The computer linked (...) (24 years ago, 7-May-00, to lugnet.robotics)
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