 | | Re: GP2D02 conversion
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(...) Actually, the GP2DO2's output is not at all linear. Plotting the output against the actual distance will show an exponential curve. Each one is slightly different so what I do is to make up a little table in Excel like: 0,0 70,10 116,15 142,20 (...) (25 years ago, 14-Jan-00, to lugnet.robotics.handyboard)
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| | Using a 293B/293D combination
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The HB FAQ mentions using the LM293B and LM293D chips in parallel (e.g., one L293D and one L293B) to gain increased current-carrying capability. My question is, if I do this am I losing the function of the spike-protecting diodes on the motor (...) (25 years ago, 14-Jan-00, to lugnet.robotics.handyboard)
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| | Fw: Whats Patrik Hui's Web adress?
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Hello Alex, My web address is: (URL) Hui Robot Store (HK) patrick@robotstorehk.com (...) (25 years ago, 14-Jan-00, to lugnet.robotics.handyboard)
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| | Re: GP2D02 conversion
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(...) You mean like value = 10 + ((70 * b) / 256) ? --Ben (25 years ago, 14-Jan-00, to lugnet.robotics.handyboard)
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| | Whats Patrik Hui's Web adress?
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Hi What is Patrik Hui web address? thanx -roboman robotman5@hotmail.com (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | GP2D02 conversion
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Does anyone how I could create a lookup table or an algorithm to convert the output of the Sharp GP2D02 (0 to 255 = byte) to values between 10 and 80 cm, which is the reading capability of the IR? Thank you, J.M. Mongeau (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | Re: IR Question
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All of the IR sensors I've seen use a pulsed IR emitter so that the detector can distinguish between the emitted IR and ambient (e.g. sunlight). Some sensors simply measure the intensity of reflected IR, but this method doesn't work reliably unless (...) (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | I have some simple questions
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I am a new user of handy board. I use handy board based on Mac. After I download Handy_Board_v1.2.icd, do I need to download any other thing to handy board? Now the basic function like fd(3), ao() works, but the expend function like sonar does not (...) (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | Sorry, I just try
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I am a new user of robot, I just try it! (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | Robotics Show on TLC
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Anyone interested, the show is: Extreme Machines: Incredible Robots A look at robots and the long-term benefits and possible consequences of their capabilities. Rating: TV-G Category: Other, Documentary Originating Country: United States Date Time (...) (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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| | Re: Sensor questions
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(...) The Electronic Surplus Dealer Goldmine, (URL) been selling some weather balloon electronics innards for a few years. On this board there are some relevant sensors: a thermistor, some sort of barometric chip and a humidity "device". The (...) (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | IR Question
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Greetings, I've heard mention of the various Sharp IR sensors which can give different distance readings for different zones. Part of my final year project is to design and investigate various sensors, but I really have to generate the stuff myself (...) (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | Re: SPI Port
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I interfaced my Vector2X to the handyboard without using the SPI port and without any machine language. I set the compass to be in slave mode and used three digital outputs on the expansion board to control the RESET, SCLK, and SS lines. I used (...) (25 years ago, 13-Jan-00, to lugnet.robotics.handyboard)
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| | Re: Sensor questions
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You wrote: I then tried the LM34. There is no calibration pin and it uses farenheit. 1F=10Mv. For some reason, the output from this device varies very little with changes in the room temperature. Now the present room temperature is 58F, during the (...) (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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| | Re: Sensor questions
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(...) Sounds like fun! Go check out the EFI332 (hope I got that right) project. That's a project to build a 68332 board to control a larger engine. They'll probably have pointers to the different types of sensors that can be used with it, some of (...) (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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| | Re: Sensor questions
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(...) SNIP (...) Newark electronics used to sell a humidity sensor based on this principle for about $ 12. It should still be available. I believe it was made by Phillips. Basically the variations in capacitor value is used to vary the frequency of (...) (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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| | Sensor questions
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I have several sensor questions. I would like to use my miniboard as an engine management system. At the present time, I have a small 2 cycle engine from a weed wacker that I would like to control. I would like to have the miniboard gather some (...) (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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| | SPI Port
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Hello - I have two sensors that require the SPI port: the Sharp GP2D02 IR sensor, and the Precision Navigation Vector Compass. I'm hoping that someone can tell me how to use both of these sensors at the same time, on the same port or by using some (...) (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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| | Re: "Traces"?
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(...) That's exactly what I meant! I took a look in my dictionary ... "conductor path" may be the technical term. (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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| | PCB Designs
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HI Any of you guys out there in robo land have any good PCB designs for high powered motor driver, IRPD's or a nice Handy Boardish thing that you dont know what to call. Thanx -roboman PS Got a PCB etcher system for XMAS and want some PCB designs (...) (25 years ago, 12-Jan-00, to lugnet.robotics.handyboard)
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