 | | Re: SPI?
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(...) What Hacker said, but also, there's a 2x4 female SPI header on the HB just above the power jack that allows you to hook up other serial devices to the HB (like other HB's, memory, etc.) It's shown in the HB Tech. Reference and there are (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | Smooth PWM in IC 3.1?
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I apologize for asking a question I think I've seen answered, but I can't find it in the mail archives. Is it possible to use Julian Skidmore's smooth PWM routines with Newton Labs' commercial IC 3.1? Since they use a different version of pcode.s19 (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | RE: Multitasking (fwd)
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Does your while loop have a break(); statement. I have an idea that this may be necessary in some situations. -----Original Message----- From: MAR ERICSON [SMTP:mar@cooper.edu] Sent: Monday, 6 April 1998 8:46 To: Handy Board mailing list Subject: (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | Re: SPI?
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CLANCY, It is the Serial Periperal Interface Handles Serial Data transmission out/in the 68HC11. I.E.the Handy Board uses an SPI for downloading data from the Desktop machine. (...) Charles Hacker School of Engineering Griffith University - Gold (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | Re: setting an output
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You mean SPI outputs? Yes, check the HB HP FAQ under something like... "...digital outputs...?" ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | setting an output
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Does anybody know if it's possible to make a pin high and then leave it high until I send another command to make it low? or will I have to set up some sort of external bistable flip flop that will save the state? I assume I would have to use some (...) (26 years ago, 10-Apr-98, to lugnet.robotics.handyboard)
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| | Vector 2x and Polaroid Sonar
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Hi All, I currenty have the Sonar connected to my Handyboard and it is great. I am interested in purchasing the Vector compass. Has anyone got both working together, it seems they both use the same SPI ports or the same pin 2 on the motor chip. Any (...) (26 years ago, 10-Apr-98, to lugnet.robotics.handyboard)
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| | Help - Cannot download!
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I wonder if any of you have had this problem before, but when I try to download the pcode_hb.s19 to the handyboard, it seems to download okay....however, when I power-cycle the board, it still acts if I didn't download anything - LCD is blank, (...) (26 years ago, 10-Apr-98, to lugnet.robotics.handyboard)
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| | Re: dc motor blues
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yup, here's what's going on. the motor percent argument controls the POWER, not the speed. if the motor is essentially unloaded, it will run at nearly full speed even at a low power percentage. if you build a gear train that makes the motor do some (...) (26 years ago, 10-Apr-98, to lugnet.robotics.handyboard)
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| | dc motor blues
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After driving all my robots with step motors, I finally decided to try driving one with DC motors. I got a couple of the lego gearmotors, and mounted them on my robot with belts driving the wheels at a reduction ratio of about 1.5:1, and have been (...) (26 years ago, 10-Apr-98, to lugnet.robotics.handyboard)
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