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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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frequency
(score: 1.695)
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frequency
(score: 1.695)
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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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frequency
(score: 1.693)
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| | Re: LEGO section starting on Compuserve
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| The Compuserve copyright rules and regulations explicitly state that owners of material uploaded to Compuserve retain ownership and rights. Compuserve gains only a compilation copyright. Here is the relevent document: ------- Begin ------- (...) (25 years ago, 19-Aug-99, to lugnet.general)
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frequency
(score: 1.692)
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frequency
(score: 1.692)
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frequency
(score: 1.692)
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| | Re: RCX Programming Questions and Sensor Ideas
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| I hope someone reads this reply to a reply to a very OLD message. I've been lurking for almost a month and, during a search, I found a thread I can expand. (...) [snip] (...) It is more difficult than this to recognize speech, but it can be done. (...) (25 years ago, 27-Aug-99, to lugnet.robotics)
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frequency
(score: 1.691)
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| | Sound
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| I wanted to make the RCX make a certain pitched sound based on sensor readings the other day (primarily the light sensor), however it appears you can't make the frequency of the command equal to a variable. Does anyone know why this is and if there (...) (25 years ago, 31-Aug-99, to lugnet.robotics)
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frequency
(score: 1.691)
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| | Re: IR to PC
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| (...) It is my understanding that IrDA and the RCX use totally different carrier frequencies for the IR ports, and thus are incompatible at a much more basic hardware level. This has been discussed in great detail in the past, so I recommend (...) (25 years ago, 1-Sep-99, to lugnet.robotics)
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frequency
(score: 1.691)
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| | RE: Sound
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| If all you want to know is the output then the RCX will display that - using the View button to show the sensor input you're interested in. If you want to play pretty noises the only alternative I can think of (and this is ugly) is along the lines (...) (25 years ago, 7-Sep-99, to lugnet.robotics)
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frequency
(score: 1.689)
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| | Re: RF Module
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| Hi, Sorry I didn't get back to you yesterday. It sounds like you need to tune your radio modules. It could be your transmitter, receiver or both. If you don't have a function generator to create an input square wave for testing, you could try to get (...) (25 years ago, 10-Sep-99, to lugnet.robotics.handyboard)
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frequency
(score: 1.688)
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frequency
(score: 1.687)
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| | RE: Questions Regardsing Lego Scout
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| That is fast... The scout is pretty cool, and easy to get going. The commands are best learned by experiment. On/Off button: self explanatory. Run button: ditto. Select button:Cycles you through motion menu, touch menu, light menu, speed of (...) (25 years ago, 17-Sep-99, to lugnet.robotics)
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frequency
(score: 1.687)
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| | Re: I have a Chalanging question!
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| (...) This is a classic application for what is called an Instrumentation Amplifier. An IA functions just like an ordinary Op-Amp, however it typically offers close-to-rail-to-rail outputs and at least a very high input impedance. One would then use (...) (25 years ago, 3-Oct-99, to lugnet.robotics.handyboard)
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frequency
(score: 1.684)
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| | Re: Light Sensor in Mindstorms
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| The sensor uses two semiconductor devices (that's as technical as I'll get, hopefully). One of them is light sensing and the other is light producing. The sensor works by sending out some light and then sensing how much of that light is reflected (...) (25 years ago, 5-Oct-99, to lugnet.robotics)
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frequency
(score: 1.684)
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| | Re: Data acquisition through analog input
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| Mr. Han, I think you can try to transmit the data through radio frequency transmitter to the receiver which is connected to the PC. I have tried this but it is digital data and not analog. Thanks, Wil. ----- Original Message ----- From: Chul Hun,Han (...) (25 years ago, 16-Oct-99, to lugnet.robotics.handyboard)
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frequency
(score: 1.683)
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| | Re: More powerful motor (was: stuff)
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| You need to be careful if you use more powerfull motors with lego construction. The plastic parts are very strong but you can easyly break teeth off of the gears or twist the rods with the current motors and a little bit of gearing. On the other (...) (25 years ago, 15-Oct-99, to lugnet.robotics)
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frequency
(score: 1.682)
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frequency
(score: 1.682)
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frequency
(score: 1.682)
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| | Re: Analog port shaft encoder
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| Tried what you said Joshua, I went through all the analog ports and manually fed them with a TTL signal from a function generator at a relatively low frequency of 5Hz and wrote this little test code to test it. In this example, the sencdr3.icb has (...) (25 years ago, 23-Oct-99, to lugnet.robotics.handyboard)
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frequency
(score: 1.681)
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