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 | | RE: r/c servos and firmware
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| Ok, Here's my 2 cents on servos...read to the bottom if you are interested in helping to develop the code for this. The servo takes a 60Hz (approx) pulse width signal between 1 and 2 msec The pulses are fed into a little circuit that generates an (...) (25 years ago, 20-Aug-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.567)
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| | RE: r/c servos and firmware
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| (...) There are multiturn servos for winches in RC sailboats, but they are REALLY expensive. (...) Well don't give up too fast. They ARE useful for steering, or lifting, or grabbing because we can set the limits of motion. This makes things like (...) (25 years ago, 20-Aug-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.567)
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| | RE: r/c servos and firmware
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| (...) OhOh, I've piqued my own interest. I've looked at the H8 hardware manual and the RCX internals. The OC1A triggers every msec, except the stupid routine clears the Free Running Timer every time!!!! So much for using the OC1B, maybe. The minimal (...) (25 years ago, 20-Aug-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.567)
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| | RE: Ideas for a RIS 2.0
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| Ok, I just have to jump in here. This thread is a really good idea, and I hope that TLG monitors it...but I get the feeling that I'm hearing folks bemoan why they can't build something because of shortcomings in the RCX, and that's like not building (...) (25 years ago, 17-Aug-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.566)
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| | New robotics sets spotted at Zany Brainy
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| This may be old news to those who follow the robotics news groups (I gave up - too much to follow). The Zany Brainy in Raleigh NC (and presumably most others) has the new Droid Developers kit ($99.99) and the new Scout set ($149.99). The Scout will (...) (25 years ago, 22-Aug-99, to lugnet.market.shopping)
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mindstorms, firmware
(score: 2.564)
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| | RE: What´s the memory for the RCX?
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| (...) Whoops, almost... There is a 32K ROM which is "masked" into the micro. It is not erasable, or rewritable. This is the core firmware with all of the hooks to handle timer interrupts, read sensors, drive the motors and display, and to upload new (...) (25 years ago, 12-Sep-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.562)
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mindstorms, firmware
(score: 2.560)
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| | RCX 1.5 kit still ships RCX 1.0 - no hardware changes
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| Recently I asked LEGO Mindstorms Technical Support if I there was an upgrade kit from 1.0 to 1.5, and they said there was ($25, available Oct 15/99) However, I was still uncertain if there were any physical or hardware changes in the RCX itself. (...) (25 years ago, 14-Sep-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.559)
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| | RE: fast firmware downloader - and compilers
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| I'll have to try fastdl at some point. My pbFORTH image is assembled to live at 0x8000 and be loaded just like "real" firmware. If I use fastdl, how do I have to change my firmware assembly output to accomodate it? On the subject of configurable (...) (25 years ago, 3-Oct-99, to lugnet.robotics.rcx.legos)
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mindstorms, firmware
(score: 2.558)
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| | RE: fast firmware downloader
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| (...) Is this the movie where there are guys competing in unassisted (except by a huge weight) deep dives? Those guys are mental... Cheers, Ralph Hempel - P.Eng ---...--- Check out pbFORTH for LEGO Mindstorms at: (URL) ---...--- Reply to: rhempel at (...) (25 years ago, 4-Oct-99, to lugnet.robotics.rcx.legos)
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mindstorms, firmware
(score: 2.556)
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| | RE: 8450 Mission / Cybermaster expansion
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| (...) No, the OPCODES are interpreted by the firmware, not the ROM code. The only thing hat was decoded (AFAIK) was the MindStorms firmware. And it was only decoded because incidentally it was in a separate file in the MindStorms CD, perfectly (...) (25 years ago, 5-Nov-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.556)
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mindstorms, firmware
(score: 2.556)
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| | Re: Mindstorms/reinforcement learning
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| I don't think that NQC by itself will handle your needs. I am not an AI expert (pretty much skipped all AI classes in college), but I expect that would need a decent amount of memory to remember which behaviors have been reinforced. NQC works on top (...) (25 years ago, 12-Oct-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.553)
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mindstorms, firmware
(score: 2.553)
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| | Re: !!! Laser attachments for Mindstorms !!!
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| (...) I was actually working on something like this using one of those cheap little $8 laser pointers. The idea is to use a pair of mirrors that can be rotated to specific angular locations to build an X-Y Laser Plotter. One mirror rotates (...) (25 years ago, 9-Oct-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.553)
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| | RE: RCX Firmware and SP
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| (...) Unfortunately, yes. The current version of pbFORTH allocates a 256 byte stack, but it's JUST above a 256 byte boundary. When you run the test code, everything works, but if your stack depth is around 12 and you run SENSOR_READ, it allocates (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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mindstorms, firmware
(score: 2.551)
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| | Rotaion Sensor Sampling Speed?
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| Hi all, I'm putting together a mazebot for Mindfest, and ran into a bit of a funny with the rotation sensor. I THINK it has to do with the sample speed, but I'm not positive. I'm using pbFORTH and sampling the rotation sensor in a tight loop. The (...) (25 years ago, 14-Oct-99, to lugnet.robotics)
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mindstorms, firmware
(score: 2.551)
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mindstorms, firmware
(score: 2.550)
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| | RE: Best selection of parts to mess around with
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| (...) Ummm, Matt. Here's my advice - free and worth every penny. Back when I was at the University of Waterloo, I was totally obsessed with reverse engineering my HP41 calculator. The PPC user's group had even created a special firmware port that (...) (25 years ago, 12-Oct-99, to lugnet.build)
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mindstorms, firmware
(score: 2.550)
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| | Re: Firmware behaviour
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| Markus L. Noga wrote in message <3818325F.AAF6DDFD@noga.de>... (...) You may find it reassuring to know that the Stop button on the Mindstorms remote is outlined in red, not green. It stops all programs and motors, but does not turn off the RCX. (...) (25 years ago, 29-Oct-99, to lugnet.robotics.rcx)
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mindstorms, firmware
(score: 2.549)
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