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 | | Re: tracking an IR beacon
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| (...) Hmmm...mmm... welllll.. if you are planning to use the GPUI series or equiv. as your detectors.. I think you may run into problems with attempting to detect critical time information about the modulated waverform. Namely, and I'm no expert on (...) (27 years ago, 7-Dec-97, to lugnet.robotics.handyboard)
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| | Re: NQC - ASM command
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| (...) asm allows you to put literal RCX bytecodes in your program. Most of the 'functions' in NQC are actually just macros that expand to asm statements in rcx.nqh. (...) To my knowledge, you can't to either of these from rcx bytecodes. Sound is (...) (26 years ago, 2-Feb-99, to lugnet.robotics)
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| | Re: EE RF question
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| (...) I'm not to clear on what you are describing here. Generally speaking I would say yes, you can slap a piece of coax in without too much loss of function. But you really need to know what type of antenna your feeding, the radio's frequency, the (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | Almost Ultrasonic Motion Sensor
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| A big problem with ultrasonic sensors is the power they consume to create the ultrasonic beacon. I don't think the RCX sensor port has enough output to run one of these. I've started to experiment with the sound generator built into the RCX as the (...) (25 years ago, 16-Aug-99, to lugnet.robotics)
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| | Re: First BUGS meet?
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| (...) I was not an original Bug, nor am I currently a Brislug. I am more an invisible lurker here in Brisbane, but I would love to become actively involved in the Brislug group. I have enjoyed all the encounters I have had with Brislugs and would (...) (19 years ago, 26-Jul-05, to lugnet.loc.au)
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| | sound generators
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| hi, Does anyone have a good idea about sound generating source. We are thinking of using Piezo transducers but don't know where to get them. This is for our product design course where we are designing a singnal indicator for an antenna. We would (...) (25 years ago, 9-Mar-00, to lugnet.robotics.handyboard)
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| | Thanks to Chuck and Max
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| Thankyou to Chuck and Max for the help with writing this code for reading square wave frequencies.If anyone else can use it here it is.Be careful though it resets the board every few seconds.I think that if this is a problem you could probably (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Re: (no subject)
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| (...) The obvious question is how you are measuring your capacitor and resistor values?. Resistors (presumably metal film), are typically +/-1%, but capacitors are unlikely to be 'better' than +/-5%, and may be significantly worse than this (many (...) (25 years ago, 12-Feb-00, to lugnet.robotics.handyboard)
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| | Re: Will Lego Learn a lesson?
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| (...) something they like, they know they can't wait until they can afford it (which might take months for the 8-12 crowd) because more than likely it will be gone. A short product cycle increases both the urgency of buying new products right away, (...) (24 years ago, 19-Aug-00, to lugnet.dear-lego)
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| | [MindStorms FAQ 4.5 How do I make a sound sensor?]
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| Subject: 4.5 How do I make a sound sensor? Content-Language: en Topic-Level: 0 Revision: Robert Munafo, 1999-07-14 Location: /robotics/rcx/ Comment: Topic-level is inaccurate pending a reference for topic levels <p>A rather complex circuit is (...) (25 years ago, 14-Jul-99, to lugnet.faq)
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| | Re: SSPP: To keep or not?
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| Tobbe, I think the SSPP contest is great, but perhaps not attractive to some people. It's a great challenge to make anything capable of pulling weight, but it is very limiting. I think it's more attractive to have a contest that would result in a (...) (23 years ago, 30-Mar-02, to lugnet.technic)
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| | Re: Robolab, byte codes and assembler
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| Thanks for the response. (...) It seems to me it's a design flaw in the entire method of counting rotations, which relies on the theoretical ideal of "instantaneous" voltage changes, which can't be produced. You can't go from 2V to 5V without (...) (21 years ago, 27-Nov-03, to lugnet.robotics.rcx.robolab)
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| | Re: Success
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| Hi I have implemented the stuff // and set the port6<7> pin LOW. Now the upper PNP transistor isn't conducting anymore. Now TX and RX works Here are the program #include <lnp.h> #include <conio.h> #include <string.h> #include <lnp-logical.h> (...) (16 years ago, 20-May-08, to lugnet.robotics.rcx.legos)
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| | Re: non-linear motor speed problem
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| (...) Several reasons. Understand that PWM has the effect of controlling the amount of power fed to the motor, power is related to current in a quadratic (p = i^2r), and your current is related to the voltage applied and the motor parameters (...) (28 years ago, 11-Mar-97, to lugnet.robotics.handyboard)
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| | Re: questions on optical encoders
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| On Sat, 18 Apr 1998, Paul wrote: Might I suggest taking a look at US Digital's optical encoders? (URL) have some low cost variants that we used and were very pleased with. I am looking at the data sheet for a "SP-16" <snip> (...) It is 1.78" in (...) (26 years ago, 18-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Tug of war
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| (...) I'm guessing the left and right wheels are connected together? Sounds like you may need to have a way to shift the CoM subtly on game-day (to adjust for equal riction on L and R sides). (...) I like the sound of that... I'm thinking harpoon, (...) (18 years ago, 20-Jun-06, to lugnet.org.ca.rtltoronto)
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