 | | Reactivating HB
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After not having used the handyboard for half a year I'm trying to get it going again. The problem is: when connected to the battery (but turned off and all sensors and motors are unplugged), it draws about 0.15 amps After about a minute or two, (...) (26 years ago, 2-Oct-98, to lugnet.robotics.handyboard)
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| | Reactivating HB
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After not having used the handyboard for half a year I'm trying to get it going again. The problem is: when connected to the battery (but turned off and all sensors and motors are unplugged), it draws about 0.15 amps After about a minute or two, (...) (26 years ago, 2-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Down loading IC
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Hi, This is in addition to the message by Mr Hui Pak from the Hui Pak Robot Store in Hong Kong. <And I got HB from him too...> In order for you to do a successful bootstrap downloading, press the "stop button" and at the same time, switch the board (...) (26 years ago, 1-Oct-98, to lugnet.robotics.handyboard)
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| | Re: Multi dimentional Arrays
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Hi all, I have decleared the arrays as static and it worked. Thank you Rick for your help. Thanks also to Will for his help. Kind Regards Sincerely, Javaid Iqbal (26 years ago, 1-Oct-98, to lugnet.robotics.handyboard)
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| | Re: output to file
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Yes, Write a dos/windows client that reads the serial line and then writes it to file using the C stdio library. -----Original Message----- From: Keith - Lui <luikeith@egr.msu.edu> To: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: (...) (26 years ago, 30-Sep-98, to lugnet.robotics.handyboard)
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| | Re: IC Programming.
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(...) Converting between types is called casting, and it goes like this: float f = 4.6; int i = (int) f; /* should assign 4 to i, I think */ f = (float) i; /* ought to assign 4.0 to f */ I'm not certain, but usually casting a float to an integer (...) (26 years ago, 30-Sep-98, to lugnet.robotics.handyboard)
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| | output to file
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Dear all, I would like to output some HB data to a file, is that possible? Keith (26 years ago, 30-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Down loading IC
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Patrick, Plugged the board into COM1 and all ok - strange as I use a modem in COM2 and this runs OK. Thanks for the advice Andy Burton <Have you tried to download the IC in COM1? <Download mode is the same as bootstrap mode where both LEDs (Red and (...) (26 years ago, 30-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Running Assembly Programs
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(...) On the 6.270 board I run an application that is mostly timer interrupt handlers and motor drivers all written in assembler. I took the assembler off of the MIT site on Cher and I wrote a small C main program that calls into the assembler and (...) (26 years ago, 30-Sep-98, to lugnet.robotics.handyboard, lugnet.robotics)
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| | RE: HB Serial Communication ("network style" cable?)
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Where do I get the "network style" cable to hook the 2 HBs together. -----Original Message----- From: Fred G. Martin [SMTP:fredm@media.mit.edu] Sent: Monday, September 28, 1998 10:44 PM To: Peter Eacmen Cc: 'handyboard@media.mit.edu' Subject: Re: HB (...) (26 years ago, 30-Sep-98, to lugnet.robotics.handyboard)
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| | RE: nvram
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Off course !!! I´m using that memory from dallas about a year to date. works excellent. Maybe sometime have some problems with some 68hc11. I just replace that micros and alll work well. I think (is posible) a little different impedance affect the (...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | SR100: IR sensor IC for sale
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(...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | Running Assembly Programs
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I am taking a course on HC11 assembly. I wanted to know how I can use the Handyboard (and the Miniboard, I have both) in this class. The course uses the Mot EV board and they use the PCBUG11 for everything. Please tell me the procedures and the (...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard, lugnet.robotics)
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| | multitasking using start_process();
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I've read through the maunual for the Handy Board, and I am aware that the handy board has multitasking capabilities. The manual says that the function: start_process(...) is the function to use to have the handy board multitask. WHERE is this (...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Multi dimentional Arrays
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(...) I don't know how big the IC stack is, but I suspect you are overflowing it because you're allocating the array on the stack. If it's an array of floating point the 10x10 array will be at least 400 bytes, and most likely larger. Try allocating (...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Down loading IC
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Burton, Andrew wrote: <snip> (...) For some unknown reason, com2 would never work properly for my HB, either. As soon as I tried it in com1, though, everything worked fine and has worked ever since. You might give it a try. Good luck. --Will , , (...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Multi dimentional Arrays
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(...) <snip> You might try using a one-dimensional array of size 100, along with a simple indexing function to simulate a two-dimensional array: int myarray[ 100 ]; int index( int row, int col ) { return 10 * row + col; } void main() { int i = 0, j (...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | IC Programming.
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Hi all, Does anyone know how to convert floating point variables to integers in IC? I want to use the control the motor using an algorithm. However, that algorithm always return a floating point number, and motor(m,p) can only use integer p. Keith (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | Lego Mindstorms
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Has anybody got one ?. If so what's the programming aspect like. Thanks in advance. John Hatton john_hatton@bigfoot.com (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Down loading IC
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Hello, You have to download the IC in download-mode again. All memory (32K volatile SRAM) will be lost after you disconnect all the power from the board. However, if you just turn-off the power (without removing power adapter or batteries) of the (...) (26 years ago, 29-Sep-98, to lugnet.robotics.handyboard)
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