 | | 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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| | Re: "Traces"?
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(...) 'Trace', and 'track', are common parlance, for the wiring built onto the printed circuit board inside a unit. So the post is saying that you have to actually cut the copper 'tracks' inside the unit itself. Best Wishes (25 years ago, 11-Jan-00, to lugnet.robotics.handyboard)
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| | "Traces"?
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(...) I've seen "trace" used a couple times as regards the Handyboard, concerning the leads from/to the inputs, I think??? What does it mean, what are they? Thx :) - Scarius (URL) (25 years ago, 11-Jan-00, to lugnet.robotics.handyboard)
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| | Re: GP2D12 Pinouts
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(...) Just visit: (URL) are some modifications to the handyboard required, because the sensor does not work with the pull-up resistors on the handyboard. You have to cut some traces on the handyboard. A detailed description and a picture of the (...) (25 years ago, 11-Jan-00, to lugnet.robotics.handyboard)
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| | GP2D12
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I just managed to connect a Sharp GP2D12 to my Handyboard. The advantage compared to the GP2D02-device is the analog output which does not consume processing power for clocking the sensor. Further information can be found at: (URL) (25 years ago, 11-Jan-00, to lugnet.robotics.handyboard)
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| | RE: More servo stuff
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I had the same problem. The servo would run fine if the program was not doing anything else. But if I was updating the pwm to the motor ports then the servo would jitter. I figured it was because the extra overhead was screwing up the timing on the (...) (25 years ago, 11-Jan-00, to lugnet.robotics.handyboard)
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| | Re: More servo stuff
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(...) I did this but it didn't help. *sigh* Thanks for the tip! (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | Re: GP2D12 & Expansion Board
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You can cut the trace going to the pullup resistor corresponding to analog(0) on the main board and then all of the expansion board analog inputs will be floating. Analog(0) is multiplexed to provide all of the analog inputs on the expansion board. (...) (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | Re: More servo stuff
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Try placing a capacitor across +5V and ground. Get something in the range of 0.1 - 0.47 microfarads and just plug it into the headers on the HB. This solved my problems. -Scott Harris (...) (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | GP2D12 & Expansion Board
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Can I use the Lego ports on the Expansion board for the GP2D12? Do these ports have pull resistors and if so can they be disconnected so the pin float as required by the Sharp sensors? -Drew (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | [Fwd: pneumatic info]
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-- MIME ATTACHMENTS DISCARDED: 1. Content-type: MESSAGE/RFC822 Content-Length: 1160 (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | Re: Interfacing GP2D02 with handyboard
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If you are not conversant in assembly, it will be difficult to obtain code for each individual digital port unless you get someone to write it for you specifically. However, if you switch to GP2D12 sensors, and remove the pullup resistors on the (...) (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | serial comm between HB and custom software
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I am trying make a robot that communicates with a computer program build in borland C. can i use the serial port of the Handy Board? how do i send and receive commands or messages to and from the HB through my boland C program, using this serial (...) (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | Re: LEGO sensor
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oops! Thanks Dr. Martin for catching my mistake about the rotation sensor. - Nick - (...) (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | More servo stuff
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I believe someone asked a similiar question to this but I didn't get an answer (I don't think). Question relating to the HB expansion board and servo control (or lack of same). I can control standard servos (S148, 3003 etc.) just fine, they run as (...) (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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| | Re: LEGO sensor
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just to be clear, there are two types of LEGO sensor: active and passive: * passive -- touch sensor, temperature sensor. * active -- light sensor, rotation sensor (aka shaft encoder, angle sensor) without expansion board, the HB can only deal with (...) (25 years ago, 10-Jan-00, to lugnet.robotics.handyboard)
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