 | | Re: interactive C
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Dear Stefano, Visit el.www.media.mit.edu...index.html to find about the needed software. Mostly you will be needing ic.exe and some library files. You may need a new pcode. Yours sincerely, Nitin (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | power supply questions
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Hello all, I want to power the handy board using the 250watt 12V 9amp power supply of a PC. Any suggestions as to what I should take into consideration before attempting this. A buffer? A fuse? A straight hook up? Why is the HB not supposed to be (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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(...) My favorite 68HC11 text resource is: 68HC11 Microcontroller by Joseph D. Greenfield Amazon Price: $87.50 (Wow! I'm sure I didn't spend nearly this much when I bought mine 3 years ago...) The sections on using the 68HC11 timers for interrupts, (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Increasing current output to motors on HandyBoard
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I wonder if this would last since a relay is mechanical and I would assume that it would wear with all that "switching". Doe anyone have any experience with this? Thanks. ---...--- ericson mar Robotics Consultant mar@cooper.edu (212)353-4356 (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re : -> Interactive C
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You help has been really useful, i'm going to visit thi slink immediately! Stefano Falconetti (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re: interactive C
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I'll follow your suggest, thanks for the time you gave me. It has been very useful! Stefano ---...--- (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Increasing current output to motors on HandyBoard
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Another solution to this which is easier but more expensive is to use the output of the motor driver chip to drive solid state relays. You need the relays that use 5 volts for control and that will switch DC. The relays I use have flyback diodes in (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Increasing current output to motors on HandyBoard
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(...) Stacking the chips is doable but you will toast them when you get near their current limit. An easier solution is to use the TI chips to drive power transistors that are acting as voltage followers. This lets them take the current. (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Increasing current output to motors on HandyBoard
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I am looking to drive a radioshack motor off my HB. Its rated at 9V - 18V. It claims that at maximum efficiency it will draw 1.98 Amps. My HB uses the TI sn754410ne motor controller and is rated only up to 1 amp. If i replace this unit with a L293b (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Sensor Question
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(...) I use both and infrared ranging sensor and sonar. I have them both mounted on rotating bases. If you plan to do some serious work with your application, then you might find this approach a little difficult. The reason is that if your robot is (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Sensor Question
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Hi, Just a quick question...What would be most effective ? An array of sensors (IR or sonar), or a single sensor on a continuously rotating base (assume 1 rotation every 2 secs...) ? Could someone here explain me the main functional differences of (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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The problem I have isn't programming the HC11. I picked that up with no problem by spending a day reading Motorola's reference manual (AKA the pink book - kindly provide free by Motorola via their web page). I've got a software background, and while (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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(...) I've been through Charles Hacker's Buffalo monitor code, the Miniboard GCC & ICC libraries, the Handyboard ICC libraries, and a few other sources, and looked at the schematics and data books a lot. That's the best way to get intimately (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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Keith, I have a reference for you. It is "Microcomputer Engineering," 2nd ed. by Gene H. Miller. You can get it from one of the online book sellers, like amazon.com. It is around $85 or so. In this text is the whole range of things having to do with (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | Multi-Processing
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Hello all- I am using my Handy Board on a robot. My team and and I thought it would be really cool if we could get it to play music while it is moving. Is there a way to do this? In my testing it seems that it only does one or the other. If anyone (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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I've taken a look at Chuck's LCD code, and I agree that it's the best I've come across. I spent last weekend studying how to program the HB in assembly. There is a woeful lack of documentation for it. There is plenty of docs on programming in IC, (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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(...) I took the assembly routine out of the ICC11 library and adapted it slightly for GCC (input/output params mostly). I had to split up the assembly and C-code portions into separate files, and have the lcd.h/lcd.c/lcdasm.s files ported and (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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(...) ... (...) Curt, may I suggest that rather than re-invent the wheel you take the LCD code out of the Handyboard libraries I wrote that are on the icc11 site. They should pretty much compile out of the box and I know they work :-) They are also (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | interactive C
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Hi, I'm new to 6811 and I've a board that is different from the handyboard. I'd like anyway to try interactive C. Who can explain me how many interesting things I can do with 32Kb of interactiove C code ? What I need ? And where can I find all the (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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| | Re: GCC 2.8.1 for HC11
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The GCC Miniboard library -plus- LCD routines are almost completely ported to the Handyboard. The LCD routines started playing nicely early this morning but I haven't added the low-level stuff into the timer interrupt yet. I can now write characters (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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