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 | | Re: To all sensor developers, why use voltage drive ?
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| (...) Do you actually have a schematic of the RCX? Matthias Jetleb VA3-MWJ (25 years ago, 2-Mar-01, to lugnet.robotics.rcx)
| | | | | To all sensor developers, why use voltage drive ?
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| Hi, Why is everyone using a voltage driven cirquit when devolping a RCX sensor-cirquit, while the RCX sense input is in fact a current sensing input ? Ok, I admit, until short I also copied the schematic everyone is using. But I now think the (...) (25 years ago, 2-Mar-01, to lugnet.robotics.rcx)
| | | | | Re: 3 Sharps at one Input
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| Stef Mientki <s.mientki@ids.kun.nl> wrote in message news:3A9F8C46.1B4C03....kun.nl... (...) purposes", based on (...) by which you can (...) reading some RCX (...) design and test (...) I'll plan to improve (...) values) You can just hook pots and (...) (25 years ago, 2-Mar-01, to lugnet.robotics.rcx)
| | | | | Re: 3 Sharps at one Input
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| Hi Rainer, Very nice job ! You inspired me to build a kind of "general remote control box for test purposes", based on the time-multiplexed switch encoder. The (rough and wild) idea is to make a box with 3 potmeters, 4 switches, by which you can (...) (25 years ago, 2-Mar-01, to lugnet.robotics.rcx)
| | | | | 3 Sharps at one Input
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| Hi All, if interested, you can have a look at my project at (2 URLs) if you want to chose between german or english) Rainer (25 years ago, 28-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: Micro-Switches, Mux
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| "Stef Mientki" <s.mientki@ids.kun.nl> wrote in message news:3A9C14C9.76834B....kun.nl... (...) Nice work. I've found the contact resistance of the LEGO switches vary so much you can't get a 4 way mux to work reliably. With real micro switches I'm (...) (25 years ago, 28-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: Micro-Switches, Mux
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| "Stef Mientki" <s.mientki@ids.kun.nl> wrote in message news:3A9C14C9.76834B....kun.nl... (...) (URL) job Stef, that's a really helpful page. I built a version of TFMs mux ((URL) a while ago but I used resistor values that are not ideal (10k, 20k, (...) (25 years ago, 28-Feb-01, to lugnet.robotics.rcx)
| | | | | RIS SDK - Comments and questions
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| I have just started to try this - is it ever cool. I notice that the Brick options are RCX, Scout and MicroScout - Does this mean that I can program the MicroScout using the RIS Tower ? - If so, do I use LASM ? - I assume that I put it in P-mode ... (...) (25 years ago, 28-Feb-01, to lugnet.robotics, lugnet.robotics.rcx)
| | | | | Re: Micro-Switches, Mux
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| There was some doubt in another newsgroup (lugnet.robotics) about my suggestions, so I've made an overview, with drawings om my website (it has also some more pratical values of the resistors), (...) met vriendelijke groet, (25 years ago, 27-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: Micro-Switches, Mux
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| Knowing the resistor inside the RCX is 10 kOhm, you should use a different resistor for each switch, the first resistor should be 10 kOhm, the second 30 kOhm, third 70 kOhm, fourth 150 kOhm, this will divide the 5V range in nearly evenly spaced (...) (25 years ago, 26-Feb-01, to lugnet.robotics.rcx)
| | | | | Micro-Switches, Mux
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| Hi, has anyone had any joy combining the input from several micro-switches into one RCX input, I've built a simple multiplexor for three lego touch sensors, but now I need four!! .. I know this can be done by adjusting my current design, except I (...) (25 years ago, 26-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: About IR Tower
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| No matter if your tower is connected before booting, it's not a PnP device ! What's more, a serial port can safely be added/removed because it's just a text device. On Linux, you can easily test your IR tower : echo 'RCX please show me a sign' (...) (25 years ago, 23-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: 2 new robots
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| Hi Mario, Look at this new one : (URL) uses use a differential, suspension,... and is a bit larger. Anyway, its a prototype, but works fine. Christophe (...) (25 years ago, 24-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: My RCX doesn't work!
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| (...) I suppose the obvious question is: Have you checked the batteries in both the RCS and the IR tower? And I do mean have you CHECKED the batteries - never assume that a "new" battery right out of the package hasn't been sitting on a store shelf (...) (25 years ago, 24-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: About IR Tower
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| The tower must be connected before you boot the computer. Have you tried using the other COM port? If your mouse is using the other port, swap it and try the tower in that port. Remember to reboot. If all else fails, you need a friend to loan you a (...) (25 years ago, 23-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: My RCX doesn't work!
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| The green light always is on when I tried to find it, also when I boot PC, I think maybe the IR light is fault, what do you think? I also tried near 100 times, change different position, far or near, stand up and lie down tower or RCX/Scout, all are (...) (25 years ago, 23-Feb-01, to lugnet.robotics.rcx)
| | | | | About IR Tower
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| I remember I connected to serial port without power off when I use IR tower every time, can it let IR tower get fault? Zhengrong (...) (25 years ago, 23-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: My RCX doesn't work!
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| I would replace the battery in the tower again. Watch the green light on the tower as you boot the computer. It should turn on once for a short time and then for a longer time as the boot sequence is completed. Check the cable connections at both (...) (25 years ago, 23-Feb-01, to lugnet.robotics.rcx)
| | | | | Re: My RCX doesn't work!
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| Where can I buy IR tower? Zhengrong (...) (25 years ago, 23-Feb-01, to lugnet.robotics.rcx, lugnet.robotics)
| | | | | Re: My RCX doesn't work!
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| I didn't say clear, I just used new battery both for tower and RCX, I tried my Scout at the moment, it also can't be detected, it seems the problem is in tower, May I need to change a new tower? Zhengrong (...) (25 years ago, 23-Feb-01, to lugnet.robotics.rcx)
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