 | | Re: Help! Hanyboard Assembly Testing problem!
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Hi! I'm still can't get the chip to go into bootstrap mode. I've double checked I've got all the components installed in the correct direction, and inspected the entire board for shorts, and have found none! What can I do?? I'll try resoldering the (...) (24 years ago, 13-Jan-02, to lugnet.robotics.handyboard)
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| | TechTV features Mindstorms robot
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All -- I was on TechTV demonstrating my Mindstorms-based Rubik's Cube solving robot last Novemeber. I just found out that there's streaming video of the event on the web. So, if you want to see CubeSolver in action, go to (URL) click the red "Video (...) (24 years ago, 13-Jan-02, to lugnet.mediawatch, lugnet.robotics.rcx, lugnet.robotics)
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| | Retry count too small for nqc linux usb driver
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Hi Thomas, I just found that the retry count for EAGAIN in RCX_USBTowerPipe_linux::Write() was too small (10) for handling the large packets used in firmware downloading. It ran out of retries middle way in sending the continue downloading command (...) (24 years ago, 13-Jan-02, to lugnet.robotics)
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| | Re: Measuring robot turn angle
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Wanted to thank everybody for replies. I ended up attaching an 80-tooth gear to the rear axle (wheels are on the front set) after extending the axle. The rotation sensor is mounted on the chassis outside with an 8-tooth gear meshing to the other (...) (24 years ago, 13-Jan-02, to lugnet.robotics.rcx.legos)
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| | Re: Dave Chen's Function List
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(...) Message 1001, in case anyone was wondering. Better yet: (URL) been looking for something like this as well, so thanks for pointing me in that direction. Is there a more recent version? -- David Schilling (24 years ago, 13-Jan-02, to lugnet.robotics.rcx.legos)
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| | 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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| | Re: New MindStorms SDK
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(...) However, LIB made in this way does not work well. The /DEF option may make import library from .def file. (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 have had no trouble sending "message()" messages to the RCX by simply sending the correct sequence of bytes directly to the COM port. Is there some reason you can't do this? JB (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Fwd: FW: The Ant & The Grasshopper
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(...) ___...___ MSN Photos is the easiest way to share and print your photos: (URL) (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: New MindStorms SDK
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(...) Thank you, Antonello. I got TOWERAPI.LIB by your command line. -- mac (24 years ago, 12-Jan-02, to lugnet.robotics)
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| | Re: Red Micromotors
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hi rich (...) i encountered something similiar lately: when the micromotor gets stalled and you want to run it in the opposite direction, it is blocked. probably due to the force that stalled it. i then had to either remove the stalling situation (...) (24 years ago, 12-Jan-02, to lugnet.robotics)
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