 | | Homebrew sensor question
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I have been given a "broken" multi-function office machine (i.e. FAX, printer, scanner). I am wondering if there are any worthwhile bits in this type of machine that can be used to make homebrew sensors for the RCX? If anyone has ideas or experience (...) (22 years ago, 23-Jan-04, to lugnet.robotics)
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| | Re: BricxCC release 3.3.7.7
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(...) Unfortunately, BricxCC is still not downloading the brickOS firmware correctly. I will look into this problem and try to fix it. In the mean time, you can use firmdl3 which works correctly. John Hansen (22 years ago, 23-Jan-04, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Re: Balancing robots
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Steve (...) motors. Presumably also if you're driving one way but falling the other then slow down. It looks too easy! I'd expect your code to differentiate the LIGHT_1 value: d_LIGHT_1 = LIGHT_1 - prev_LIGHT_1 prev_LIGHT_1 = LIGHT_1 CenterPoint1 (...) (22 years ago, 23-Jan-04, to lugnet.robotics)
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| | Re: How Many Mindstorms Have Been Sold? Or What's the Highest RCX Product Serial Number?
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(...) Your page should get linked on the main Robotics page. There aren't a lot of entries. I'll post mine as soon as I find the receipt to get the purchase date. (22 years ago, 23-Jan-04, to lugnet.robotics)
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| | Re: Balancing robots
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(...) Um, the back-EMF of the motore isn't related to the motor load per se but rather the relaxation of the current in the coil when it moves off the stators. It's also very fast (ie E=Bc) so the RCX isn't likely to get good readings for this. It's (...) (22 years ago, 22-Jan-04, to lugnet.robotics)
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| | Re: How Many Mindstorms Have Been Sold? Or What's the Highest RCX Product Serial Number?
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(...) If it's of any help, I have may have the lowest number: 000560 (a version 1.0). It will download firmware from Mindstorms, Robolab, LeJos (and I suppose others though I don't have them so I can't test that) BUT it gives an error message on the (...) (22 years ago, 23-Jan-04, to lugnet.robotics)
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| | Re: How Many Mindstorms Have Been Sold? Or What's the Highest RCX Product Serial Number?
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Guess I only have the second highest: #756734, bought via LEGO Shop At Home in mid-December 2003, as part of the RIS Kit (2.0 plus a few bags of extra parts, a remote, a capacitor for some reason, etc.) Love the product, would love it more if it (...) (22 years ago, 22-Jan-04, to lugnet.robotics)
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| | BricxCC release 3.3.7.7
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I've released version 3.3.7.7 of BricxCC today. It adds a Spybot EEPROM tool window. It adds a new configurable watch tool window. It adds a new generic set source value tool window. It adds a hot key (F2) for the pbForth console. The position of (...) (22 years ago, 22-Jan-04, to lugnet.robotics, lugnet.robotics.rcx, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Re: brickOS & Cygwin with BricxCC
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(...) Thanks again for testing this for me! (...) The Send Messages tool window can send any IR message from 0 to 255 to a brick. John Hansen (22 years ago, 22-Jan-04, to lugnet.robotics.rcx.legos)
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| | Re: brickOS & Cygwin with BricxCC
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(...) Its true, Before John "fixed" the older OS issues, I was at my whit's end and was prepared to do damage to myself with a fork -- after unsuccessfully trying to install BrickOS.... but now, thanks to John and Bricxcc my cutlery is safely (...) (22 years ago, 22-Jan-04, to lugnet.robotics.rcx.legos)
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| | brickOS & Cygwin with BricxCC
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Yesterday, I replaced the two installers I have up on my bricxcc.sourceforge.net site with slightly modified versions. The new installers contain a new cross compiler which I built from 2.95.2 myself (rather than the one Hitachi provided some time (...) (22 years ago, 22-Jan-04, to lugnet.robotics.rcx.legos)
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| | Re: Balancing robots
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(...) When trying to balance, there are really just two questions to ask. 1) Is the current angle/tilt/distance-to-floor changing? 2) Are the wheels turning? If you answer no to both, you are balanced. It really doesn't matter what the (...) (22 years ago, 22-Jan-04, to lugnet.robotics)
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| | Re: Balancing robots
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Allen / Steve (...) using an offset. (...) Steve: From reading your code, it seems that you "recalibrates" the "zero" point very so often by assuming that the bot is vertical. So slow changes in reflectivity shouldn't matter. I've only been working (...) (22 years ago, 22-Jan-04, to lugnet.robotics)
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| | Re: Balancing robots
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(...) I don't think there's a good source for this data (motor back-emf) using an RCX. Yes, Legway just used the motor commands to simulate the wheel velocity. It would have greatly increased the complexity of the wheel assembly to add rotation (...) (22 years ago, 22-Jan-04, to lugnet.robotics)
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| | Has anybody successfully added an RCX to 7471 Mars Rover?
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Ever since I picked up the 7471 Mars Rover a few months ago, I thought it screamed out for an RCX modification. I saw a lot of discussion about the possibility, but didn't find where anybody had actually successfully done it. Now that BrickFest PDX (...) (22 years ago, 22-Jan-04, to lugnet.space, lugnet.robotics, lugnet.org.ca.rtltoronto, lugnet.robotics.rcx.legos, lugnet.org.us.smart, lugnet.org.scibrick)
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| | Re: Re[2]: Balancing robots
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(...) Thanks a lot ! I'm not in a hurry ;o) Philo (22 years ago, 22-Jan-04, to lugnet.robotics)
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| | [hangar18-general] Hangar 18 - Feb. Newsletter (fwd)
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Hangar 18 - Open Source Distributed Technology A global informal co-operative of amateur and professional computer and technology users focused on using Open Source technology for our problem solutions. In particular we use Linux, Plan 9, & Inferno (...) (22 years ago, 21-Jan-04, to lugnet.robotics)
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| | Re[2]: Balancing robots
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Hello Philippe, (...) PH> Hi Allen, PH> Could you post the actual code and perhaps a photograph of your robot, I want to PH> try that for a while and it would eliminate some fiddling! PH> TIA, PH> Philo Hi, I'll try and find the code and grab a (...) (22 years ago, 21-Jan-04, to lugnet.robotics)
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| | Re: Balancing robots
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(...) Hi Allen, Could you post the actual code and perhaps a photograph of your robot, I want to try that for a while and it would eliminate some fiddling! TIA, Philo (22 years ago, 21-Jan-04, to lugnet.robotics)
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| | Re: NEWBIE question : installing BrickOS
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(...) Or you can just skip the make strip step entirely. All it does is reduce the size of your executables but that has no bearing whatsoever on whether they function. Try opening a DOS box, change directory (without entering the BASH shell) into (...) (22 years ago, 21-Jan-04, to lugnet.robotics.rcx.legos)
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