 | | string functions and Interactive-C
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I would like to be able to construct various useful strings and send them out the serial port (not just to the display). For example, I would like to be able to do something like: sprintf(buffer,"Motor Temperature is %d",mot_temp); (...) (25 years ago, 2-May-99, to lugnet.robotics.handyboard)
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| | Re: HC11 E 'series'
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(...) Yes. I'm using a couple of E9's. Setting the config register to the normal Handyboard value disables the internal ROM, so you end up with an A-series with the exception that you have twice the RAM (512 bytes). Curt Mills, WE7U (...) (25 years ago, 29-Apr-99, to lugnet.robotics.handyboard)
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| | HC11 E 'series'
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I was wondering if i can use the HC11E9 series microcontroller instead of the A1 (that is suggested on the data sheets for the handy board). I have the Reference Manual for the HC11, looked at the data sheets and they say the E9 is an upgrade from (...) (25 years ago, 29-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Smooth PWM with IC 3.2
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Dear Bill, Mostly you have got wrong versions of your library files mixed up. Multiple definition of functions is occuring. It is best that you download all files from the same site on the internet and use them. As per the new version, raw_analog (...) (25 years ago, 29-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Video transmitter and receiver
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Hi! can anyone recommend any good video transmitter and receivers? my team has the monitor but no transmission equipment. =) chen (25 years ago, 27-Apr-99, to lugnet.robotics.handyboard)
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| | Please help me.
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Hello all. I have just begun 68HC11 study. So, everyone has a question. 1. I want to know how to change hex file to motorola s19 file. 2. I want to know where it is free disassembler for 6811. Please help me!! Yoshi astronauts@mail.goo.ne.jp (25 years ago, 27-Apr-99, to lugnet.robotics.handyboard)
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| | GCC/HC11
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Just to let everyone know: I think I may have found a new compiler bug with the GCC/HC11 C-compiler. When I did this: c = d = serial_getchar(); My program didn't work correctly. If I did this instead: c = serial_getchar(); d = c; It worked fine. (...) (25 years ago, 26-Apr-99, to lugnet.robotics.handyboard)
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| | doc info
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I am buliding my own handy board and I having difficulty downloading the "Assembling The Handy Board" file off the web site. Does anybody know any other way to obtain this document? Fred (25 years ago, 26-Apr-99, to lugnet.robotics.handyboard)
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| | CMOS CAMERA
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Anynoe did connect a CMOS camera to Handy Board ? Is possible ? (25 years ago, 26-Apr-99, to lugnet.robotics.handyboard)
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| | Re: IR test reports "Rubbish" when I run test.c
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Test.c expects to see both short and long pulses of IR, and it tries to accept timings from any remote. It times the signals it receives and records the lengths of the shortest and longest pulse. It then uses the midpoint of these values as a (...) (25 years ago, 24-Apr-99, to lugnet.robotics.handyboard)
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| | Re: handyboard clock speed
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(...) Not going to mention the free Otto/Steven/Keith/Curt GCC-2.8.1 HC11 port? I'm hurt. ;-) Maybe you need to add my web & ftp pages to your free software page, now that I have a GCC Handyboard library available? GCC/HC11 patches are available (...) (25 years ago, 23-Apr-99, to lugnet.robotics.handyboard)
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| | Re: handyboard clock speed
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(...) yes, this is right. the fastest you can go with the 52-pin 6811s is 12 MHz crystal --> 3 MHz system clock (i'm pretty sure). so this is only 1.5x over the stock HB. so you've got the issue Curt pointed out with not only the downloader, but (...) (25 years ago, 23-Apr-99, to lugnet.robotics.handyboard)
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| | Re: handyboard clock speed
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(...) From the data books for the 68HC11, if you have any version of the E-series (except for perhaps one, a low-power version?), you can run them at up to a 3MHz E-clock (12MHz crystal). I haven't looked at the rest of the handyboard schematic with (...) (25 years ago, 23-Apr-99, to lugnet.robotics.handyboard)
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| | IR test reports "Rubbish" when I run test.c
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When I try to get the values for my IR transmitter the test.c reports that it is a bad. It calls it 'rubbish' why would that be? -Peter (25 years ago, 23-Apr-99, to lugnet.robotics.handyboard)
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| | RE: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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Sorry, no. The breakdown occurs purely from the dielectric material. Remember lightning? You don't all of a sudden see the clouds come crashing down to the ground and then have a discharge. (...) (25 years ago, 23-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Faulty Digitals
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it might be the processor, but more likely there is a board short connecting the dig ins to ground (input 7) and pwr (input 8). measure resistance between the inputs and the gnd and pwr rails to check. fred (...) (25 years ago, 23-Apr-99, to lugnet.robotics.handyboard)
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| | Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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Date: Thu, 22 Apr 1999 13:21:14 -0700 From: Chuck McManis <cmcmanis@mcmanis.com> Kind of. Electrolytics are indeed made by plates in a conductive solution, however when the voltage increases, it pulls the plates together (standard columbs law (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Faulty Digitals
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Greetings all! I've got a Handy Board with the expansion board, and the first and second digital ins (digitals 7 and 8) aren't working. 7 is stuck in 0, and 8 is stuck in 1. I replaced everything on the board but the processor itself, and I'm not (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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(...) Also (generally) usually less than 1uf (...) and generally >= 1uf (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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Kind of. Electrolytics are indeed made by plates in a conductive solution, however when the voltage increases, it pulls the plates together (standard columbs law stuff). When you exceed the rated voltage the force on the plates is enough to pull the (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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Generally, cost, accuracy, size, and drift. Ceramic caps are expensive ($/pf) reasonably stable across temperature and acceptably accurate. Electrolytic capacitors are cheap ($/pf) only moderately stable across temperature changes, polarized, and (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | smooth PWM!!!...!!!
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hi everyone, i like to ask something on the PWM of the handboard. if i only do a command: motor(2,50); motor(3,50); i will get a smooth PWM of 500 Hz of waveform.( -_-_-_-_ something like this) but if i implement the above command into a program (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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As long as we are talking about caps, I cannot find the information about why one uses tanatlum caps vs ceramic caps vs electrolytic. What are the differences between the various types? Thanks, Gary Livick (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: I hope someone can help me...
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(...) If it is the note I posted, also get the followup. The initial post I think I made a couple errors, and then someone said their chips got hot :-o. Anyway a followup post corrected the information. (...) If you look at the pinouts for the 293 (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | RE: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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Sorry to say, but the capacitance does change depending upon the applied voltage. As you increase the plate voltage a force is created pulling the plates together. This effectively INCREASES the capacitance. The good news is that this enhancement is (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | I hope someone can help me...
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I am planning on getting some LMD18200 motor driver chips from National Semiconductor and I found some info about which pins go to what by doing a search in the H-Board archive. Great resource by the way. It expalains how to take one of the standard (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Polaroid Sonars
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Hi everyone, It seems that the world's Polaroid Sonar reserve is almost depleted. Polaroid is currently in the manufacturing process to produce more. The company www.acroname.com still has them in stock if anyone is interested. ---...--- ericson mar (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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Capacitance is calculated using the area of the plates, the dielectric constant, and the distance between the plates. It does not have anything to do with the voltage. If a thicker dielectric is formed, it will reduce the capacitance. This is not (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | RE: new intranet ip
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(URL) now points to the new site also. Doug -----Original Message----- From: mark williamson [SMTP:markw@tabnet.com] Sent: Friday, March 19, 1999 2:42 PM To: Andy Stevens; Brad Davis; Brendan Benzing; Caitlin McGillicuddy; Carlie Ross; Chris (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Electrolytic Capacitor Ratings [was Re: Choosing Parts?]
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(...) listed (...) Your comments aren't taken as being harsh, but I'm still not sure I agree. Now I must say that my comments are based on something I heard in the rummer mill, but it still sounds plausible. What I heard goes like this. Electrolytic (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid Sonar
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Greetings, Acroname has them on their parts list, though I am not certain if they have them in stock (www.acroname.com). Marco A. A. de Oliveira assfalk@eece.unm.edu /---...---| /---...---/ CNPq Scholarship Awardee | | Research Asst. | | | ACE SMR (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | handyboard clock speed
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Ive checked the mailing list archives and i cant find a simple answer to the following question: Is it possible to run the HB at >2Mhz? That is, can I run a different version of the 6811 perhaps and get 8Mhz? What are the advantages/disadvantages? (...) (25 years ago, 22-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Mobile Robot Question
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(...) Can anyone answer all that? I think the answer is "it depends". Unfortunately it depends on so many variables that you'll just have to implement one system at a time, checking each thoroughly and modifying as you go. Make sure to go back and (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid Sonar
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(...) The Mondotronics Robot Store was selling them, but the price wasn't great. Instead of about $50 per transducer/board combo, they were selling pairs for $150 last time I checked. -- Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Choosing Parts?
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(...) I don't mean to be harsh, but this isn't exactly correct. The voltage is the highest the capicitor is rated for. if you have a 12V circuit it won't hurt to put in a 200V cap, but you'll need lots of room. Generally for safty, in high current (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Choosing Parts?
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In a message dated 4/21/99 1:08:33 AM Central Daylight Time, josr0633@cetus.zrz.TU-Berlin.DE writes: jos runarko: (...) For electrolytic capacitors, you want the printed voltage to be the closest voltage above the voltage you are operating at. The (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Choosing Parts?
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Hi, in Katalogs, there are many capacitors with the same capacity value but different voltage and tolerance. My question is, which voltage should I choose: above the operating voltage of 12 V? Second, the tolerance the lower the value it has a (...) (25 years ago, 21-Apr-99, to lugnet.robotics.handyboard)
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| | Re: help on replacement part
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yes. fred (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | Mobile Robot Question
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Hi, I'm building a mobile robot using an R/C car with an Electronic Speed Controller (ESC) as the mobile platform, the Handyboard for sensorial data aquisition, and servo control; and a Linux "box" for GPS, videoconferencing, wireless (...) (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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| | help on replacement part
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Can anyone please tell me if a 50 v replacement for part C7 and C9 will be ok instead of the normal 63v one? -Jon Schuck (25 years ago, 20-Apr-99, to lugnet.robotics.handyboard)
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