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On Wed, 19 Mar 1997, Stefano Nardone wrote (...) Thanks! that was not clear, where did you find info on j7? Is there a IR transmitter in the parts list? I didn't see one? Do you know what to use for a transmitter? thanks, jm (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | LCD compatible
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Does anyone have experience using a Truly MCC162A1-2 16x2 LCD? I bought one from Wirz electronics for the handyboard. In assembly step 6.something, it says to power it up and there should be *faint* segments lit, if they are dark check pin1 to (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | re: ztx614
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(...) How are you gonna get 100 ma through a 1k resistor biased by 5volts?? The max would be 5ma. I have *never* heard of a LED this size that can handle more than 20ma!! This LED is tiny. I don't know where pin one of the jumper goes to or its use (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | re: ztx614
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(...) I think it must better be a darlinghton and it must support enough current: if you want to get 0.1A or more pulsed current in the IR led, the transistor must have a rather high current gain, more than that of an ordinary npn trans (by the way (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | system time and casting
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Hej >joema@mpx.com.au wrote: >When I try to use the system time as part of an expression >in an if-else statement I get an error message while >trying to download to the board. Goes something like : >type <float> cannot be used in a conditional >Is (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | mail bounces
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dear all, please be aware that whenever you post a message to the list, you will get some bounces back. this does not mean your message didn't go through. instead, it means that there were a few bad addresses on the list. there are always at least (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | Re:system time
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Hi Joe, The mail bounced back to me. I am resending the mail again. -Pandit ---...--- (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | External power for motors
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Hello, Y'all! I was wondering if anyone has done this: Cut the trace leading to the H.B. Motor driver chips, and then re-wired it so that you can use external power supply/ I know I saw it somewhere on the 'web... Could anyone give me a URL or (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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(...) The Radio Shack LEDs should work fine. The trick is that these things are very sensitive to intensity, duty cycle, and frequency stability. To modify intensity change the amount of current flowing through the LED (lower resistor value == more (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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(...) could u please tell me where u bought the infrared LED's? The one that i bought from radio shack (part no.276 143) is giving a maximum range of 7.5 inches and i badly need to sense atleast 1 foot. thanks Sriram We didn't want that (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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