 | | Cunning idea
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For anyone annoyed by the lack of motor outputs on the RCX who has some electronic engineering experience, a device can be built using a 4017B decade counter, some relays and a few other parts that will give a total of 1 original motor connection (...) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Re: Message transmission speeds.
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(...) That sounds believable. I send 6 one-byte messages in each comms cycle. That's gotta be a good 150ms - which is probably about what I'm seeing. How depressing. :-( (...) So, the first major speedup would be to send a 3-byte message containing (...) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Re: Error in grabber arm instructions?
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I just recently built the grabber arm with my new RIS 1.5 set, and I didnt have any problems with not having enough pieces. If i get time later ill see how many 6-length bars my set has, but I had plenty to build the grabber arm as far as i can (...) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Re: how long can i keep the rcx on
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(...) I have recently used my RCX with a Train Transformer and ran it for 10 days. No worries. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Re: Error in grabber arm instructions?
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I too Had this problem. I had 8 w/ a length of six. I had to substitute these parts. I wonder why?? I have the 1.5 RCX also. (...) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Error in grabber arm instructions?
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I've got an RIS 1.5 set, and I'm building the grabber arm from the instructions on the Lego website. The instructions call for a total of 10 beams of length 6 (is there a standard terminology for these things?), and my set only has 8. I'm (...) (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Re: how long can i keep the rcx on
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patel <lego-robotics@crynwr.com> wrote in message news:003301c073b1$63...default... Dear Group Can i keep it on for many hours?? There is an automatic time out that you need to set to 0. After that it should run forever on AC. (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Motor Drivers
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Hi, Currently I'm using an L298 to drive a couple of DC motors. Unfortunately the only way I can intorduce any sort of speed control is to PWM the enable line since PWM'ing the inputs for speed control does not work. Does anyone else know of any (...) (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Re: Message transmission speeds.
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In the RCX and the tower, the IR receiver is located close to the transmitter. When the transmitter is running, the adjacent receiver's Automatic Gain Control cirucit (AGC) becomes saturated, and sets the receiver sensitivity to it's lowest possible (...) (25 years ago, 30-Dec-00, to lugnet.robotics)
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| | (canceled)
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| | (canceled)
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| | how long can i keep the rcx on
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Dear Group One question For how many hours can i keep the rcx connected to the mains .. and kept running ,, Can i keep it on for many hours?? Dr Patel (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Wish All of you A Very HAPPY NEW YEAR
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Hi Group Wish All of u a Happy New Year to you .. From Dr Patel (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Re: Message transmission speeds.
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(...) Oops. Two mistakes there. (5 + 1 + 1)*4 = 28 not 24, which is moot because "messages" apparently have a prefix of hex F7 as part of the data payload, so a message is actually 9 bytes or about 36ms. Makes it sound like you're doing nothing (...) (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Re: Message transmission speeds.
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(...) (snip) (...) The data rate is 2400bps, and each packet of N bytes of data has 5 + N bytes of overhead. So the more realistic time to send a 1 byte message is 24ms. Here is an excerpt from the Communication section of (URL) Did you check the (...) (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Message transmission speeds.
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I'm thinking about building a robot with three Scouts acting as slaves to a single RCX - nine motors and a dozen sensors in all! I'm not quite sure what they are all going to do yet - but I want to plan the communications mechanisms first. What I'm (...) (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Re: Best set..
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"Ralph Hempel" <rhempel@bmts.com> wrote in message news:NEBBIJADEJHLFJD...mts.com... (...) equivalent (...) I would have to agree. I have two code pilots and would gladly buy more (if they ever go on sale). Other great sets, which are no longer (...) (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Re: better 9719 RIS 1.0 or 9747 RIS 1.5?
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If you build projects that are stationary, the 1.0 is the best bet. The cost of batteries makes the power connector very valuable. -- Bob Fay California, USA rfay@we.mediaone.net (URL) (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Re: better 9719 RIS 1.0 or 9747 RIS 1.5?
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(...) Depends. If you want the capability of plugging into wall power, you want a 9719 (plus, you might still be able to get a free upgrade kit even though the date has long since passed - it never hurts to call on these things). If they're at the (...) (25 years ago, 30-Dec-00, to lugnet.robotics)
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| | better 9719 RIS 1.0 or 9747 RIS 1.5?
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If you could still get 9719 RIS 1.0 and 9747 RIS 1.5, each $200, which would you get or would you get both? (25 years ago, 30-Dec-00, to lugnet.robotics)
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