 | | Two Servo motor Conteroler available !
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Two servo motor control for RCX available now. Mindsensors has developed a two servo motor control for the RCX. This interface works on IR message Sent from RCX. It can control tow servo motors with ~2 degree resolution, and can move from 0 to 180 (...) (24 years ago, 11-Jan-02, to lugnet.robotics.rcx)
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| | Re: Precise turns of any angle!
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(...) drops counts. However, that only impacts the wall following application only to the extent that it would require periodically going through the initialization function which calculates the distance the robot currently is from the wall. The (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) By "Six degrees of freedom" I mean: 1) Translation to Left/Right 2) Translation Forwards/Backwards 3) Translation Up/Down 4) Rotation left/right 5) Rotation fore/aft 6) Roll left/right. These are often called (respectively) by the names: Sway, (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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I am developing a two axis acceleration sensor that is RCX compatible. Unfortunately, that by itself is not sufficient for inertial navigation in a fixed plane. (i.e. a robot that stays on the floor) A fully inertial system would need a rotational (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) Ah, I see. Thanks for your explanation. How would one make inertial sensors for the RCX anyway? I suppose you could rig a plumb bob to a rotation sensor - but as you had already pointed out, rotation sensors are inaccurate at low rotation (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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(...) I don't think you can with only Spirit.OCX. I think you need the capability of the new SDK. Have you been able to send bytecodes using Spirit, or are you using another tool? --Ian (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) Actually, i think you could use TWO rotation sensors because the rotation sensors work in both directions, and Lego generally doesnt go up and down (but it might if you had some sort of maze with ramps). (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Precise turns of any angle! -- Rotation Sensor Information
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(...) I ran my rotation sensor in an experiment at nominal motor speeds of 300 rpm and didn't lose a single count in over 10 minutes of testing. I believe the 1250 RPM figure...although you may be right about it being worse with the RIS 2.0 (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Inertial guidance
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(...) The term "inertial guidance" refers to a navigational technique that involves carefully measuring the rotational and translational accelleration of the vehicle, then integrating that to derive the velocity and integrating *that* to get the (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: send message from ir-tower to rcx
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My replacement for spirit.ocx does not yet support sending messages to the RCX, but it would only take 10 min to add it. (It is planned, but first I am working on cloning spirit.ocx). As for receiving, the IR tower shuts down to fast to reliably (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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