Results 381 – 400 of about 5300.
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 | | transmission distances
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| When I muck about with Exploration Mars software, the RCX doesn't go out of range until it's out of the room. With pbForth, the RCX receives the commands over just as far a range, but can only send its "ok" feedback when it is quite close to the (...) (24 years ago, 19-Dec-00, to lugnet.robotics.rcx.pbforth)
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rcx, ir
(score: 4.818)
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| | RCX IR Tx Circuit
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| Here's my drawing of the RCX IR transmission circuit (receiver circuit to follow soon): (URL) With the voltages as shown, the RCX is not transmitting. The IR LEDs are powered by a 600mA current sink. I haven't measured for waveforms yet - the (...) (20 years ago, 20-Jan-05, to lugnet.robotics, lugnet.robotics.rcx, FTX)
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rcx, ir
(score: 4.815)
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rcx, ir
(score: 4.809)
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| | RE: IR Problems
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| RCX IR does not require direct line of sight. All sorts of reflections will work. Especially if you're in a "smallish" (bedroom, home office) room. The RCX firmware always has the IR turned off. "Wait for mail" and "send mail" is just a higher (...) (18 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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rcx, ir
(score: 4.806)
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| | RCX IR protocol
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| Hi all, I was looking at the IR protocol described at (URL) and i dont quite understand. In paricular: What is the packet header? what does the ~ mean? (eg "RCX reply opcode is always ~query opcode") I am asking because i am writing an application (...) (23 years ago, 2-Sep-01, to lugnet.robotics.rcx)
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rcx, ir
(score: 4.796)
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| | rcx ir tower and irda
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| I just wondered - is it possible to use the ir tower as an irDA-port? I know that it isn't the protocal that the rcx uses, but since the rcx can coummunicate with e.g. a palm .. (URL) shouldn't it be possible to do it the other way round? In that (...) (21 years ago, 18-May-03, to lugnet.robotics.rcx)
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rcx, ir
(score: 4.795)
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| | Re: RCX IR protocol
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| On the page (URL) look under the description of his send command and you'll see he sends a query "10" (hex) and gets a response "ef". This value, 0xEF, is the logical not (modulus 0xFF) of the query value 0x10. The tilde means "not". Dennis (...) (23 years ago, 3-Sep-01, to lugnet.robotics.rcx)
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rcx, ir
(score: 4.794)
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| | Re: RCX IR protocol
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| (...) Take a look at (URL) (...) 55 ff 00 (...) complement, i.e. invert every bit separately. So for example ~f7=~11110111=00001000=10. (...) Good luck and show it to us when you are done Jürgen (23 years ago, 4-Sep-01, to lugnet.robotics.rcx)
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rcx, ir
(score: 4.793)
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rcx, ir
(score: 4.788)
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rcx, ir
(score: 4.787)
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| | Re: RCX IR Transceiver Circuit
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| (...) I can verify the data on all but the zener and 6Cp transistor. I intended to put it in a text file with the diagram, but I'll add it to the diagram instead. The 1Kp and 3Kp transistors have equivalents of BC548B and BC558B, which are common (...) (20 years ago, 28-Dec-04, to lugnet.robotics.rcx, FTX)
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rcx, ir
(score: 4.786)
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| | Re: frame RCX reply how
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| (...) can be (...) This is the PBAliveOrNot (or ping) packet type. It has the side- effect of reinitializing the toggle bit used to determine repeat packets. Do you have the Minsdstorms SDK? It covers all the standard LEGO packet types in detail: (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx)
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rcx, how
(score: 4.304)
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| | more RCX
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| Hi! How to control two or more RCX's with one PC at the same time?? (with NQC or VC++) Thanks, Borut (25 years ago, 6-Mar-00, to lugnet.robotics.rcx)
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rcx, how
(score: 4.296)
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rcx, how
(score: 4.288)
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| | RE: Anyone made animatronics with the RCX yet?
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| (...) I know this only works with pbForth, and it's not ALL Technic, but you can drive standard servos with the RCX. Here's how: (URL) You can even drive pneumatic switches with the servos... Cheers, Ralph Hempel - P.Eng ---...--- Check out pbFORTH (...) (24 years ago, 21-Jan-01, to lugnet.robotics.rcx)
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rcx, how
(score: 4.205)
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| | Re: frame RCX reply how
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| (...) (URL) bytes Accordingly I'd now guess the firmdl3/rcx_comm.c algorithm for framing standard RCX replies is: (...) 1) Send the bytes of the command packet. 2) Loop to receive up to equally many bytes echoed. If 100ms elapses twice without (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx)
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rcx, how
(score: 4.141)
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| | Re: frame RCX reply how
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| Hi pat, (...) This is what you send reflected by the walls, I think. (...) Bits 0-2 of the opcode tells you the number, with 6 meaning 0 and 7 meaning 1. For some special opcodes it is longer. (...) + 1 start bit I think there's some Java code for (...) (22 years ago, 1-Feb-03, to lugnet.robotics.rcx)
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rcx, how
(score: 4.130)
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| | Power Down for RCX
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| I know that in the diagnostics window for the RCX Control Center you can set the "Power Down" time, this sends a message to the RCX about how long to wait idle before power down. I would like to know the command (message) to send to the RCX to make (...) (24 years ago, 29-Jan-01, to lugnet.robotics.rcx.nqc)
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rcx, how
(score: 4.128)
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| | reply framing in firmdl3/rcx_comm.c
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| --- From: Kekoa Proudfoot [via Pat LaVarre] About rcx_comm.c waiting twice, I see where the confusion is now. If no bytes are available, the wait will be T. If some bytes are available, obviously you have to wait at least as long as it takes for all (...) (22 years ago, 6-Feb-03, to lugnet.robotics.rcx)
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rcx, how
(score: 4.128)
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rcx, how
(score: 4.127)
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