 | | error message
|
|
Whenever I run this simple program below, i get the following error message: "Fatal Internal Error: Illegal size to spew_peek_op(read local)". What does it mean?? Please help.. void servo(char balloon) { const float left_b=400.0; const float (...) (25 years ago, 14-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Inversine sine function
|
|
This polynomial approximation looks better: ArcSin(x) = Pi/2 - Sqrt(1-x)*(a(0) + a(1)*x + a(2)*x^2 + a(3)*x^3 + a(4)*x^4 + a(5)*x^5 + a(6)*x^6 + a(7)*x^7 ) where a(0) = 1.57079 63050 a(1) = -0.21459 88016 a(2) = 0.08897 89874 a(3) = -0.05017 43046 (...) (25 years ago, 13-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Inversine sine function
|
|
(...) You might give this a try (for -1 < x < 1): ArcSin(x) = x + a(1)*x^3 + a(2)*x^5 + a(3)*x^7 + ... etc. with a(1) = 0.1666666667 a(2) = 0.0750000000 a(3) = 0.0446428571 a(4) = 0.0303819444 a(5) = 0.0223721599 a(6) = 0.0173527644 a(7) = (...) (25 years ago, 13-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Inversine sine function
|
|
Hello, I would like to calculate an inverse sine (arcsin) function for one of my application. Does anyone know the algorithm of this trigonometric function? Thank you, J.M. Mongeau (25 years ago, 13-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: L298 Motor Driver
|
|
If you don't already have the L293D chips it would give you more current capability if you used the SN754410. It is pin compatible with the L293D and supplies 1A continuous versus 0.6A for the L293D, and they can be stacked just as Kam suggested for (...) (25 years ago, 13-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | RE: L298 Motor Driver
|
|
James, Have you considered stacking two L293D chips on top of each other, solder the legs together and add a heat sink? You should be able to drive motors in the 1A range. Just a thought. -kam (URL) (25 years ago, 13-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Driving an L298 motor driver board
|
|
I'm trying to drive 2 larger DC motors that draw about 1A each. I am using a L298 motor driver board that is sold by HVWTech. I would like to drive it straight from the Handyboard and I'm wondering if I'm going about this correctly. Am I correct in (...) (25 years ago, 12-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Infrared receiver
|
|
Hello, I'm currently doing a project that requires emitter and receiver, but I have a problem. For the emitter circuit, pulses is received from the programmed that I've programmed into the Xilinx, it then sent the pulses to the emitter and the (...) (25 years ago, 12-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: silly question or not??
|
|
No, its not a stupid question. Just impossible. At least kind of impossible. If you want 32 more outputs using the board as-configured, forget it. With what is available for chip selects minus what you have used already, you can get 16 more. All (...) (25 years ago, 11-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | silly question or not??
|
|
Im sorry if this is a stupid question....... no1 has answered..... or does no1 know???? Hello everyone... I hav already connected a hc374 to Y0 of the expansion bus to get 8 digital outs, It works gr8. I need anouther 32 outputs which meens I need 4 (...) (25 years ago, 11-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | pcbug11's talka.boo
|
|
Hi, Does anybody have the asmhc11 source code of this little piece of software (talka.boot that is) ? Can't find anywhere on the motorola site. Also, if somebody knows a seriel port monitor for DOS, i'm *very* interested... Byebye, Hans (25 years ago, 10-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Piezo Rate Gyro and HB
|
|
Hi Jan good job. I've done exactly the same thing :)))) I only use some assembler code to measure the time. In fact I have some code, that lets you measure a frequency or a pulsewidth ranging from about 30 Hz to 30kHz. If anyone wants the code (i've (...) (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: You are not authorized to view this page
|
|
big system failure has occurred. following is msg from our sys admins. fred as i'm sure you all have noticed, our most critial file server hub.media.mit.edu is having major problems. we are looking into it but do not currently have an estimate of (...) (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: You are not authorized to view this page
|
|
you can't even access www.media.mit.edu, it looks like they forbade foreign IP address from accessing the server. it is probably temporary. -p (...) (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: You are not authorized to view this page
|
|
Dr. Martin must not like us! I got the same message. - Nick - (...) (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | You are not authorized to view this page
|
|
Hi! Trying to move to pages (URL) gives an "You are not authorized to view this page" error message. Anybody, have some idea what's going on? (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: best HB kit source?
|
|
Hello Jeff, Acroname now sells the HB kit. Looks to be better than Peter Hui's kit, and it includes IC 3.2 in the $220 price. (URL) don't have the expansion board that handles LEGO powered sensors and has servo drivers, but Douglas Elect. has the (...) (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: best HB kit source?
|
|
Check out (URL) luck! (...) ===...=== Kam Leang University of Utah Department of Mechanical Engineering MEB Room 2202 Salt Lake City, Utah 84112 ===...=== (25 years ago, 9-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: best HB kit source?
|
|
Jeff, Check out (URL) They have Handy Board kits, and lots of other things. I work with the owner, Steve Richards, quite often, and they have a first class operation over there. Plus, the price is right. Good luck, Gary Livick (...) (25 years ago, 8-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | best HB kit source?
|
|
I want to build a handy board kit and am looking for the best source. advice? -Jeff (25 years ago, 8-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Excessive clutziness when replacing the NiCad battery
|
|
Bill ... For spare batteries, take a look at B.G.Micro's BAT1024. They are two AA cells in series, 800mAh ... 10 batteries (20 cells) for US$5.95. I've made several spare HandyBoard battery packs using these cells ... and they all work great. (URL) (...) (25 years ago, 8-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Excessive clutziness when replacing the NiCad battery
|
|
Hello, everyone: Many thanks to Chuck McManis and Nick Taylor for posting the simple and elegant solution to my problem: install an inline plug Gee, I wish that I had thought of that!. Thanks for the help. Bill Bynum (25 years ago, 8-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | H-bridge chips
|
|
1. Two quick question, when i type 'ps' at the C prompt, i always get the following: PID STAT PC SP ORG Tricks Executing 1 20 c200 fe01 fe00 10 <command line interaction> is that there becoz Interactive C is running or is that something else? 2. my (...) (25 years ago, 8-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Excessive clutziness when replacing the NiCad battery pack
|
|
Hello Bill ... Here is what I've done on both of my HandyBoards and it's given good results. Cut the leads between the board and the battery pack and add 2-pin polarized connectors. Good luck and have fun, - Nick - (...) (25 years ago, 7-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Excessive clutziness when replacing the NiCad battery pack
|
|
Hello, everyone: I'm having problems when I replace the HandyBoard's NiCad battery. I have probably replaced around 10 battery packs by now on different HandyBoards. On 4 or 5 of the replacements, I end up having to replace the 74HC373 latch, (...) (25 years ago, 7-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | synchronization error
|
|
I'm encountering a synchronization error when calling serial_putchar within a for loop. Here's my code: void test(){ int looper; for (looper=0;looper<16;looper++){ if (looper<7){ serial_putchar(analog(looper)); printf("\nPort: %d Value: (...) (25 years ago, 7-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Another chance for the LM35
|
|
(...) Well, di you try to put an Operational Amplifier mounted in voltage following? +Vcc --- Op. Amp. | *-------* LM 35 O------|+ Vin | | | Vout|--\----- To 68HC11 Analog Port --- /-|- Vin | | GND \\\ | *-------* | \---...---/ Florent (25 years ago, 6-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Stepper motor
|
|
Does anybody know whether it is advisable to control a 24VDC stepper motor using the handyboard's motor outputs (11V)? also, what's the maximum phase current the motor can have to be compatible with the handyboard? (25 years ago, 6-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Stepper motor
|
|
Does anybody know whether it is advisable to control a 24VDC stepper motor using the handyboard's motor outputs (11V)? (25 years ago, 6-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | IR files and sensors
|
|
Two question i have: 1. On the Handyboard webpage, there're the files for the IR Remote Control software. it's a little long and complicated. i'm purely interested in activating the output ports and modulating it to transmit the 40khz signal and (...) (25 years ago, 6-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Another chance for the LM35
|
|
Hi, I'm again trying to connect the LM35 from National, there was some posts in the list, but none of that solve my problem. As an introduction let me say that the sensor provides an output of 10 mV/ ° C at 10 mA, the conversion when reading it (...) (25 years ago, 6-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | IC Technical Support problem
|
|
Hi! I bought my first handyboard in mid October and a Rug Warrior Pro in early November. And since I have had this peculiar download problem with the IC 3.2, pcode will download without any problems but everytime after downloading the lib files, IC (...) (25 years ago, 5-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: strange TS-53 servo problem
|
|
Hi ... It sounds as though you are obtaing the power for your servo from the HandyBoard's motor output pins ... and if so, this is the source of your problem. The HB does NOT control motor speed by varying the DC level ... it uses PWM to reduce the (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | strange TS-53 servo problem
|
|
Since the output ports for the motors of the handyboard supplies 11V, i connected a 5V regulator to power my servo. i have a capacitor between the driver's + and - terminals. I looked at the control signal on the oscilloscope. The duration of the (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Virus
|
|
Hi - Yes very well said -- on top of that HE may have been infected and we were the result of that infection. Sure can't see a guy putting out a virus with his name address phone and photo on it unless he is some really sick sucker! Regards - Dave (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Suggestions for Virus Management
|
|
Hi - Yes I too received this virus - I did not open it though. We had a copy of it sent to where I work so I knew of it. I hope that very few of you got infected. Regards - Dave ----- Original Message ----- From: Evil Mechatron (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | plaintext ettiquette reminder
|
|
Will you people with web-based or GUI-based E-mail clients *please* observe the following plaintext ettiquette rules? (1) turn off HTML (2) turn off vcards (3) turn off images in your .signature (4) don't send any kinds of binary attachments Vielen (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Suggestions for Virus Management
|
|
I'm inclined to agree. These things are not easy to trace. I think this guy was one of those people who wouldn't process the unsubscribe correctly. But, honestly, I can't find his name in my records. So really, I don't know who this guy is, let (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | RE: Virus
|
|
kjleeUh, before anyone starts a witch-hunt, I'd suggest you examine the headers a little more closely. The message didn't come from this guy. Even if they did, I still wouldn't send him emails or bother him in any way - it's too easy to fake (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
| |
| | Servomotor
|
|
i'm using digital pin 9 to generate the control signal for my TS-53 servo. however when i try to make it move, it only turns a little bit for the first command but just stops there, the motor continues vibrating though. the idea behind my code: set (...) (25 years ago, 4-Dec-99, to lugnet.robotics.handyboard)
|
