In our shop there are only china cubes. It has 58mm. Is it right? Aug 12, , PM. I just measured a brand new genuine cube with a digital micrometer for my model helicopters :- - 57mm. Aug 13, , PM. Hi again robot has troubles with color recognition.. I'm try compile your program. Setup Bricx Command Center. Please email on fedalal gmail. Aug 14, , AM.
I'm find how to fix it. Also add code to your program, when not all colors are corrected response, show me side info with ability to change. Your robot fantastic!!! Thank you. Aug 16, , PM.
We need help! My 10 year old son build the tilted twister 2. When we run it the sensor arm does not swing over the cube and it stops after it says "thank you". We know the sensor and motor work.
It also seems to go very slow even though we have new batteries in it. Any ideas out there? Mar 8, , AM. Gary said…. It mechanically works fine, but can't get it to solve the cube. Any suggestions? Jun 10, , AM. The gap of the grabber must not be too tight around the cube. Otherwise it will drag the cube back with it. If your cube is stiff, you could lubricate it with silicone spray. After lubrication you must work the cube for a few minutes. Make sure the turntable is aligned before starting the program.
Make sure the tilter arm is fully retracted before starting the program. Before you let the robot solve a scrambled cube you should calibrate it. The calibrate program calibrates the position of the scanner arm. Run the calibrate program and read the instructions on the NXT-display. When the program asks you to position the sensor above center of cube, you should turn it so that the emitting light hits the center piece of the top of the cube.
Tip: Dim the lights of the room to better see where the light from the sensor hits the cube. Run this program to check if the colors of a cube can be sorted out using the light sensor. Place an unscrambled cube on the turntable.
The robot scans the faces of the cube. It then displays the minimum and maximum light sensor values of the colors for each cube face and tells whether the cube is qualified or not. If the color ranges overlaps the program says the cube is not OK.
But if the overlap is small it might work anyway because of the color resolve algorithm of the tiltedtwister program. This program shows the current light sensor value. You don't need the source code unless you want to modify it. It can be viewed in notepad And here is the java application source code. First make sure you have followed the building instructions correctly. The robot performs the following steps: 1: Wait for a cube to solve.
The ultrasonic detector detects when you put the cube in the cradle. If the ultrasonic sensor by any reason does not detect the cube, you could press the orange center button to continue.
If this is the case it could be caused by incorrect position of the color sensor. Try to move the sensor a bit up or down.
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