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 | | Decoding the LEGO IR remote control
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| Hello All - - I'm interested in using a LEGO IR remote control to control other things besides the RCX. Has anyone here done any PIC development along these lines? I would like to use a PIC to decode the output of a Sharp GP1U581Y and convert the 16 (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx)
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ir
(score: 0.280)
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| | Re: Tasks vs. program slots
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| (...) What exactly does the Sharp IR receiver do? If it uses Sharp's ASK modulation, then you may have a problem. Ideally, what you want is something like a phototransistor to a good preamp, followed by a bandpass around 38kHz, then some sort of (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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ir
(score: 0.280)
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| | Re: Decoding the LEGO IR remote control
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| (...) Hello Kekoa - - I apologize for not being able to make myself clear. I want to use the LEGO #9738 to control robots that use something other that the RCX for a controller. I envision a Sharp GP1U581Y IR receiver driving a PIC. The PIC will (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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ir
(score: 0.280)
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| | Re: Tasks vs. program slots
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| (...) Dave, It is basically just exactly what you describe. It usually takes about 200us or so to "see" the incoming 38KHz signal, common I suppose for an integrator to react to the signal getting through the band-pass filter, then a Schmidt trigger (...) (25 years ago, 20-Sep-99, to lugnet.robotics.rcx.nqc)
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ir
(score: 0.280)
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long
(score: 0.280)
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ir
(score: 0.280)
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| | Re: Decoding the LEGO IR remote control
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| (...) Ah, so the infamous d2 opcode is finally fully explained. What the d2 opcode did was discovered a while back when the firmware was disassembled, but people could only guess as to why Lego put such an opcode into the RCX. It was never connected (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx)
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ir
(score: 0.280)
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| | Re: Neural network for legOS... ??
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| (...) Sorry Niels, but I would say just try it yourself, they're not that hard to do, failing that if you can find the source for a small ANN, then that stands a good chance of working, I'm running quite a powerful evolutionary algorithm on mine, (...) (24 years ago, 27-Mar-01, to lugnet.robotics.rcx.legos)
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long
(score: 0.280)
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| | Re: Decoding the LEGO IR remote control
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| (...) [snip] (...) What makes this especially intrigueing is that the remote control box does not send messages with the same preamble as the RCX does. The RCX with take an RCX message and treat it as a message. The stuff from the remote is treated (...) (25 years ago, 17-Sep-99, to lugnet.robotics.rcx)
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ir
(score: 0.280)
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| | Re: Electrical Data Link between 2 RCXs
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| Thanks for the info on the electric datalink. It's a clever idea that I never would have thought of myself. It seems to me that you could cut down on your transmission time if you changed the shape of your pulse train. The pauses between bits don't (...) (24 years ago, 26-Mar-01, to lugnet.robotics.rcx.nqc)
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long
(score: 0.280)
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| | Re: Tasks vs. program slots
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| Hello Dave, First, let me thank you for NQC ... you've made my RCX playing tremendously more rewarding. I've been wanting to use a Sharp IR receiver to demodulate the signal from a LEGO remote control, and then a PIC to decode the rx output for use (...) (25 years ago, 18-Sep-99, to lugnet.robotics.rcx.nqc)
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ir
(score: 0.280)
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| | Re: fast firmware downloader
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| (...) The URL is: (URL) in the nick of time? The original firmdl.c was dated 10/3/98. It is currently 10/3/99 (PDT at least). This was not planned! Like firmdl.c, firmdl3.c is a single file joined from smaller ones for simplicity. I will link a .tgz (...) (25 years ago, 4-Oct-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
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tower
(score: 0.280)
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| | Re: light sensor multiplexer
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| Hi Rainer, I do not understand quite your point about timing. Regarding to power sharp takes much more than what your RCX can give ( my measuremants show that RCX gives RMS current of )15 mA only this is not going to drive your sharp at all. (...) (24 years ago, 21-Mar-01, to lugnet.robotics.rcx)
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long
(score: 0.279)
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long
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| | RCX as a universal remote?
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| Here's a thought: You're in the bedroom with your trusty RCX on the floor. You're watching TV, but the tuner is in another room. You point your remote at your RCX, change channels, and the RCX scurries out of the room, off to repeat the IR command (...) (25 years ago, 13-Sep-99, to lugnet.robotics.rcx)
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ir
(score: 0.279)
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long
(score: 0.279)
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long
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| | Re: Remote Control Internals?
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| (...) The LEGO remote control sends bytecode D2 (documented in the RCX 2.0 SDK, but also supported in the 1.0 firmware). When multiple buttons are pressed, the appropriate bits are ORed together in the data portion of the packet. The packet gets (...) (24 years ago, 17-Mar-01, to lugnet.robotics.rcx)
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long
(score: 0.279)
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long
(score: 0.278)
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| | Solved?? rotation sensor problem.
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| I tried solutions posted on this newsgroup to fix the rotation sensor problem.But It didn't work stable enough. I tracked the sensor input and realized the sensor sometimes picked up transient signal between two states. To solve this problem, I (...) (25 years ago, 10-Sep-99, to lugnet.robotics.rcx.legos)
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range
(score: 0.278)
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