 | | Re: Cannot download pcode on a Mac G3
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I have a 266 G3 minitower, and I have the identical problem. The only way to solve this is to let IC die, not reset the HB and then run IC again. It complains to can't talk to the HB, and then I reset the HB and all works fine. Kinda odd, but it (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Hardware Questions
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Recently, many of you have had pretty specific hardware-related questions. The best thing to do is to read Appendix B of the MIT 6.270 Robot Builder's Guide (Appendix A of the new 1998 Course Notes). This appendix contains a complete description of (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Re: Motor Drivers in 7000 - 7fff
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Jaron, (...) This was done (obviously) to save extra decoding circuitry needed on the board. That is, if the handy board needed to assign (say) 7000 as the motor then sixteen address lines need to be decoded (binary 0111 000 000 000). Yet with the (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Working with a different compiler 2
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Howdy All, I am in a happy mood today. I finally got to the 'hello world' stage. All I had to do was count the number of interrupts, * 2 (16 bit addresses), subtract this from BFFF which is the reset vector and thus supply BFD6 to my linker to start (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Re: LCD Addressing - & - Expanded Mode
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From the driver code I recently sent out: * LCD Connections on the Handyboard * PORTB bit 0 - R/W * PORTB bit 1 - RS (Register Select, 0 = instruction) * PORTC 8 bits of Data * PORTA bit 4 - E clock (...) That is correct, the LCD is NOT memory (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Re: dc motor blues
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Hi All; Along the same lines, I would LOVE to control my motors so they run at constant speed under varying load. I know that it's theoretically possible to sense the RPM of a PM DC motor by tracking the drive voltage as the commutator makes and (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | RE: Connections
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Hmm... I had the same problem and made an only mildly inelegant kludge with straight and right-angle headers. How much do you enjoy soldering? Seriously, does anyone know of any single-row intraconnectors? Brett Anthony Research Technician School of (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Re: Cannot download pcode on a Mac G3
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(...) Yes. Using the same set of boards, I can download pcode using IC 3.1 as well as IC 2.xxx from my old macintosh Centris 650 as well as from Performa 6100. -Paul (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Re: Cannot download pcode on a Mac G3
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Hi Paul, This is the first time we've heard of such a problem with IC 3.1 on the Mac G3. Can you verify that it is the case that pcode download works fine for you from other Macintoshes? -- Randy ---...--- (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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| | Re: Schematic drawing - freeware ???
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Hi Les, i´m using a nice drawing programm (TARGET 2001). In germany we can get a "lite" Version of a big-drawing programm it´ easy to use and it works great, but it is in german. If you are interested, send me a mail tschau bernd (...) (26 years ago, 4-May-98, to lugnet.robotics.handyboard)
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