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 | | Re: Piezo Rate Gyro and HB
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| Hi Jan good job. I've done exactly the same thing :)))) I only use some assembler code to measure the time. In fact I have some code, that lets you measure a frequency or a pulsewidth ranging from about 30 Hz to 30kHz. If anyone wants the code (i've (...) (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
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frequency
(score: 1.981)
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frequency
(score: 1.981)
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| | Re: IR Tower
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| IrDA does not use a carrier wave, whereas CIR (Consumer IR) does. Communication between the two is possible by "building" an IrDA data stream that mimicks CIR carrier wave. IrDA can read CIR by oversampling the IR to determine carrier frequency and (...) (21 years ago, 15-Apr-03, to lugnet.robotics)
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frequency
(score: 1.981)
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| | Re: Rotation Sensors - slightly dissapointed...
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| (...) analysis (...) legOS (...) is (...) would (...) I believe it is. I tried setting the sampling rate to high speed and it just didn't work at all. Yes, debouncing the input halves the effective clock frequency, but the problem is that (...) (25 years ago, 27-Feb-00, to lugnet.robotics)
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frequency
(score: 1.981)
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| | Re: NXT sound sensor characteristics
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| (...) anything interesting at 3 kHz... perhaps because I didn't go that high (oops). To figure out the frequency response I did it manually: I borrowed a signal generator and speaker from the university, as well as a sound meter, and then simple (...) (16 years ago, 28-Feb-09, to lugnet.robotics)
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frequency
(score: 1.981)
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| | Servos
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| Can you hook up RC servo signal inputs to the motor drivers? It looks to be feasable as both require a pulse width modulated signal but I'm not sure if the motor driver's carrier frequency and range of pulse widths is suitable. Any ideas - it would (...) (27 years ago, 30-Mar-98, to lugnet.robotics.handyboard)
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frequency
(score: 1.981)
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| | Re: IR Detection
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| (...) The Sharp IR detector is designed to respond only to modulated IR signals. The card from Radio Shack will indicate whether the LED is illuminated, but it won't tell you whether it's modulated at the proper frequency. Perhaps that could be the (...) (26 years ago, 30-Oct-98, to lugnet.robotics.handyboard)
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frequency
(score: 1.981)
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frequency
(score: 1.981)
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| | Infrared communication expansion?
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| I'm curious to know if anyone has expanded the communication of the infrared on the RCX brick to a point where it could be interacted with on a 360 degree scale. Somewhat like a radio frequency although the communication does not require going (...) (22 years ago, 13-May-02, to lugnet.robotics)
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frequency
(score: 1.981)
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| | RE: sensors, actuators, and software, oh my!
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| (...) hmmmm... these jump to mind: Human "sensors": a) global/positional(2D) Light Level (also 3D because we move our head/eyes taking notice of the sampling vector) b) global/positional(stereo) Sound Frequency/Level (might also be considered 3D (...) (22 years ago, 4-Apr-03, to lugnet.robotics)
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frequency
(score: 1.981)
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| | LEGO Train Hobby growing... comments?
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| It "feels" like the hobby is growing, there are more shows and more clubs. I often think about growth in serveal ways, two of which are: big, more brick intensive layouts and frequency of shows per club. The bigger more brick intensive layouts are (...) (20 years ago, 24-Feb-05, to lugnet.trains)
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frequency
(score: 1.981)
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| | RE: IR output connection
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| Using a 'hacked' GPIU58X (see Novasoft website for acrobat file describing changes required) you can get an analogue reading relating to the distance from an object. The transmitting LED has to be modulated at the correct frequency and should be (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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frequency
(score: 1.981)
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| | Re: X-10 Wireless Camera Train Car
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| (...) Michael Hader built one of these in 2000 and brought it to a few NGLTC shows. Michael's car had headlights for the tunnels and was very functional in design. It didn't have a motor of its own, so it was either towed or pushed around the track. (...) (22 years ago, 23-Nov-02, to lugnet.trains)
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frequency
(score: 1.981)
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| | Re: Ultrasonic sensor interactions
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| (...) The 'Aloha' protocol was the predecessor of this. (...) Someone earlier told us that the thing runs all the time and can't even be shut off. That being the case, I think we're pretty much doomed. (...) Yes - but the relatively low frequency at (...) (18 years ago, 21-May-06, to lugnet.robotics)
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frequency
(score: 1.981)
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| | Re: CLSOTW voting
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| (...) Anyone can nominate any site for any reason, even their own site. Where it ends up in the queue is somewhat subjective, based on a number of factors, and also somewhat objective, based on the quantity or frequency of nominations. When a newly (...) (25 years ago, 20-Dec-99, to lugnet.general)
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frequency
(score: 1.981)
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| | Re: Is it possible to make sound sensors?
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| The RCX supports the Microsense LogIT DCP sensors using the Lego DCP sensor adapter. One sensor that fits this adapter is the DCP Sound Sensor that has a 50dBA to 100dBA frequency response that is nominal A-weighted. Of course using this sensor is (...) (25 years ago, 31-Mar-00, to lugnet.robotics)
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frequency
(score: 1.981)
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| | Re: Any musical instrument?
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| (...) Nothing particularly clever... but it should be possible to "tune" one of the electric motors and play notes from an arbitrary scale on it. The faster you drive the motor, the higher the frequency emitted, and vice versa. This works really (...) (24 years ago, 30-Nov-00, to lugnet.technic)
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frequency
(score: 1.981)
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| | Re: robosoccer ball problem...
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| (...) It's not ideal for stock LEGO sensors I think, but it might be good to point out to them that the reason it blinks is to make things *easier*. With a source pulsing near a known frequency, ambient conditions are much easier to cancel out. (...) (17 years ago, 29-May-07, to lugnet.robotics.edu)
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frequency
(score: 1.981)
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| | CyberMaster communications
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| (...) Humm.. in fact having two units using completely different mediums of communication (IR/Radio) might be an advantage in some cases because communications with the computer never mix. By the way, has anybody ever tried changing a bit the radio (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
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frequency
(score: 1.981)
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| | Re: A fan no more
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| In lugnet.general, Peter Roberts wrote: <snip> (...) Whoa man, back up the bus! The Technic system is still very much compatible with the LEGO system as a whole. This is evidenced by the fact that Technic parts are found with increasing frequency in (...) (20 years ago, 10-Jul-04, to lugnet.general)
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frequency
(score: 1.981)
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