 | | Re: InterActive C 3.2 or Interactive C 2.8 freeware
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(...) Just try printf("\n %f",4.1/4.1); and see the surprising result with the free version (2.). You should be really careful, when using floating point operations, 'cause there seem to be loads of these errors. I am not sure, if this problem is (...) (24 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Re: InterActive C 3.2 or Interactive C 2.8 freeware
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(...) Actually I am using the free version, but you have to be very careful, if you need reliable floating point operations. For example try printf("\n%f",4.1/4.1); and have a look at the surprising result (2.). This is just an example, there loads (...) (24 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Re: A few questions.
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Hi Todd, I'll answer the best I can. (...) As long as the relay doesn't require more current than the motor driver chip can handle. You can always bridge the motor outputs together for higher current. The motor chip has the built in diode, so you (...) (24 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | (canceled)
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| | Re: A few questions.
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(...) I don't know about the other questions, but with Interactive C if you write a function called main it will be executed on power up. This just uses the reset interrupt, which can be set manually if you're using a different compiler/assembler; (...) (24 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | A few questions.
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Can the motor outputs be used to close a relay instead of running a motor? As an example to control a motor that needs 120v AC? As far as the inputs go, are the digital inputs for switch type sensors (high or low value only), and the analog inputs (...) (24 years ago, 27-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Sonar
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The hardware is limited to 31.5' (~ 10 meters). The limitation is on the design of the receive amplifier's gain module (and noise floor). Generally scaling this to an integer of 32767 results in a precision of just over 1 tenth of an inch (or 1/3 (...) (24 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Sonar
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(...) Martin, I noticed a similar result as well. Maybe someone else can say for sure, but I seem to remember that there may be a way to slow down your interrupt counter, so that it won't overflow (a timer setup register). I don't have my 'HC11 book (...) (24 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: sonar mapping with evidence grid
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(...) Yep, about 30 degrees. There's a pretty good article about how to deal with it on the Seattle Robotics Society web site: (URL) it out before somebody decides to delete it! One thing they don't really discuss in the article is how much extra (...) (24 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Sonar
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(...) That sounds correct. Someone else asked about that last year. Try searching the mailing list archives. The problem is not just that the result is an integer, but that it's a signed integer. You effectively only get 15 bits of information out (...) (24 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Sonar
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Hi I've a Polaroid Sonar Ranging Modul. The longest distance I can mesaure is about 2,7 meters. In my opinion it's not the hardware, but as the result is an integer, so it can't be greater than 32768. Right? Has anybody developed another programm, (...) (24 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | sonar mapping with evidence grid
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Hi, I have connected sonar to my HB and it is time to analyse the data. Is it true that the sonar range reading is in a cone shape at 30 deg. and not at point form ? I just can't find any information from the Polaroid home page. Is anyone there (...) (24 years ago, 26-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard Upload
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Ive used the serial routines on the Hb site with moderate success. You can send data byte by byte along the line through the interface board and back to your serial port. A simple way to test the incoming data is to run a terminal program on the (...) (24 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard Upload
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(...) I've done this. Kind of. I hooked up a Handyboard to listen to a GPS, and to send commands and data to a terminal node controller (an amateur radio modem) to send my position out over the radio. In order to do this, I told Interactive-C to (...) (24 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard Upload
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Here is a RS232 com driver that you can use to send serial data to other devices. It's on the Handy Board Site. (URL) is more info similar to the above, also from the Handy Board site: (URL) there is the attached from George Musser's Advanced (...) (24 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: InterActive C 3.2 or Interactive C 2.8 freeware
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The commercial version of IC offers the ability to declare multidimesional arrarys (with freeware, you only can use single dimensiond arrays), commercial IC allows #includes, and the user interface is somewhat more robust, making debugging more (...) (24 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Handyboard Upload
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Has anyone out there ever uploaded data collected by the Handyboard back to the PC? I need to get some distances measured by our sonar sensors back up to the PC for use in another application. If you can help me, I'd really apprieciate it. (24 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard in mix with SSC II Servo Controller
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Hi again, Don't be confused la. I think you had made a little mistake. In order to interface SSC with HB, the serial connection is not by the telephone line. The connections is done by connecting the serial data pin on the SSC. Remind you that it is (...) (24 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | InterActive C 3.2 or Interactive C 2.8 freeware
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Hello Handyboard users and helpers, We are a group of new Handyboard users from Denmark. We are building a non commercial autonomus mobile robot (Programmed via PC)for a competition at a university. We need to know wether we can do with the (...) (24 years ago, 24-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Handyboard in mix with SSC II Servo Controller
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Hi! I've tried connecting the SSC II to the handyboard through a telephone wire (and when that didn't work) through the configurating header at the upper right corner of the SSC II circuit board. I've downloaded the proper library to the handyboard (...) (24 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
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