 | | R: communication via serial port
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Using java and comm API ? ----- Original Message ----- From: Ray Tang <raytang_1@hotmail.com> To: <handyboard@media.mit.edu> Sent: Thursday, October 05, 2000 4:49 AM Subject: communication via serial port (...) and (...) the (...) a (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| | Linux and v1.21 handyboard (fwd)
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Hi, I've successfully located and compiled the IC files for the Handy Board. I can load and run programs on the board, BUT the digital input(s) are not being "seen". E.g. a simple program like: void test3(){ while (1){ if (digital(10)) printf("10 is (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| | communication via serial port
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Hi, This isn't an off topic question... Has anyone tried programming the serial port (on Linux) to communicate with the Handyboard? I am working on an RF link between the Handyboard and a PC via serial communication, but I don't know much about (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| | Re: external power
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I am by no means an expert on the subject but this is how I did it. First I cut the heavy motor power trace as shown in the FAQ. Next I soldered a four pin female header on top of the expansion board where the expansion board picks up power for the (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| | Re: Multiple GP2D02 range sensors
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Greetings, (...) From what I could understand from the documentation ((URL) you could use one timing signal for all of them, as long as each sensor is connected to its own output line (to which the sensor would serially output its 8 bit value). (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| | external power
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i was wondering if i can modify the handyboard to accept a secondary power supply for the motors and still use the expansion board at the same time. if there is anything else i need to know or do, i would greatly appreciate hearing about it. thank (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| | Re: Trouble with handyboards
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It is common when polarized caps are put in backwards! Some of those little beggars are hard to see, and easy to get backwards. Other things, such as solder bridges or bad solder joints, can be a problem. Some have even reported finding debris under (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| | Trouble with handyboards
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I am having students in one of my classes build handyboards, and most are working fine, but some are failing. They all passed intermediate tests, but failed when fully assembled. The most common failure mode that I am seeing results in the (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| | Multiple GP2D02 range sensors
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I would like to connect multiple (two to four) GP2D02 range sensors to my handyboard. Will each need to have is own timing signal or can they share somehow. If each does need a signal, how many can I connect? Should I get an Expansion Board? any (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| | Re: announcing handyboard.com !
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Dr. Martin ... Good luck in your new steps down the path of life! -Nick (...) (24 years ago, 2-Oct-00, to lugnet.robotics.handyboard)
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