 | | RE: I played with fire...
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(...) My mistake. The RCX 1.0 has an AC adaptor jack which has a full-wave bridge rectifier to convert to DC and would provide AC protection. I guess RCX 2.0, without the external jack, does not have this. (17 years ago, 26-Aug-07, to lugnet.robotics.rcx)
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| | Re: I played with fire...
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(...) I applied 9V AC power to the internal + - battery connectors. (17 years ago, 26-Aug-07, to lugnet.robotics.rcx)
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| | RE: I played with fire...
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(...) While your RCX is fried, it is probably not from plugging AC power into the power plug. LEGO's low voltage adaptor is an AC adaptor. Or did you mean you applied AC power to the RCX sensor port? (17 years ago, 26-Aug-07, to lugnet.robotics.rcx)
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| | Re: I played with fire...
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Hi Patrick, (...) that looks like a somewhat large diode to me. In my own picture it is round and is marked with a diode symbol and "A2". (...) It shouldn't he hard to replace. But I doubt that it is the only thing that is damaged. It looks like it (...) (17 years ago, 26-Aug-07, to lugnet.robotics.rcx)
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| | I played with fire...
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I applied 9V AC power to a RCX 2.0... yes yes, DC is required. Does anybody successfully repaired such a disaster ? Here are pictures pointing to what I think burned out. What is that component ? Anybody successfully replaced it ? (URL) have (...) (17 years ago, 24-Aug-07, to lugnet.robotics.rcx)
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| | Re: Possible bug? Simple light sensor condition checking.
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(...) It looks to me like the c compiler optimized the assignment to the variable away, since there is no external method call (shutdown_requested() is just a macro). (...) You should make this volatile int offonpad = 0; (...) You should also put an (...) (17 years ago, 16-Jul-07, to lugnet.robotics.rcx.legos)
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| | Re: Possible bug? Simple light sensor condition checking.
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I use BrickOS (LegOS) but I'm not expert in the inner workings. The code you have here appears fine to me. So, it may be a bug in BrickOS, or a problem elsewhere in your code. I will say I've ran into some interesting things when using tasks. (...) (17 years ago, 16-Jul-07, to lugnet.robotics.rcx.legos)
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| | Possible bug? Simple light sensor condition checking.
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I tried my own skill on writing a program for the included lego test pad (RIS 2.0), and I discovered something weird. The following code does set the conditions right, but the following code doesn't set the conditions right if I comment out the (...) (17 years ago, 16-Jul-07, to lugnet.robotics.rcx.legos)
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| | Re: Sign of center pin on power adaptor
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(...) You must be dealing with a different release of the battery pack than I am, since the only portion of the US instructions that mentions numbers states the output of the battery pack (10VAC, 7VA) and the approximate charge time (4 hours). There (...) (17 years ago, 12-Jul-07, to lugnet.robotics.rcx)
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| | Re: problem with the RCX
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"Brian Davis" <brdavis@iusb.edu> wrote in message news:JL1oK5.K84@lugnet.com... (...) This might help! (URL) (...) (17 years ago, 12-Jul-07, to lugnet.robotics.rcx)
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