 | | Re: Help! I think I nuked my IR transmitter!
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(...) When you reboot your computer, does the green light on the tower light up? If not, make sure you have your Serial ports turned on in Windows and the Bios. 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: Help! I think I nuked my IR transmitter!
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Usually these circuits are protected against reversed polarity. Does the green light work after the battery was properly installed. Have you succeeded in installing the firmware? Try different settings on the tower switch. Short range and Long (...) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Re: Motor Drivers
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I use the L293D in my Lego Automation Controller. PWM works fine with this chip. (I built several variations of the controller before Mindstorms was available.) - pete. (...) -- Pete Sevcik sevcik@flash.net Techno-stuff Robotics (URL) for FUN ! (25 years ago, 31-Dec-00, to lugnet.robotics)
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| | Re: Help! I think I nuked my IR transmitter!
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"John Phillips" <buckwheatphillips@msn.com> wrote in message news:G6Hpxs.1uH@lugnet.com... (...) the (...) John, I think you're OK. The 9V terminals inside of the IR Tower are different sizes - one small hole, and one large one (in the plastic (...) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | Help! I think I nuked my IR transmitter!
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Hello All, I'm new to all this so please forgive me if I breach any format or protocal. I'm having some trouble with downloading my Mindstrorms 1.0 RCX. Every time I try a message says IR trans. not working. I tried all the suggestions it gave and (...) (25 years ago, 1-Jan-01, to lugnet.robotics)
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| | 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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| | 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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