 | | Autonomous robot with radio communication
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Hello everybody, A few years ago I was a regular member of this newsgroup. For my master's thesis I made an autonomous robot that could communicate with a desktop PC using a pair of radio transceivers (RadioMetrix BiM-418-F). The results of the (...) (24 years ago, 26-Feb-01, to lugnet.robotics.handyboard) !
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| | Infrared communication
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I would like to use Legos IR tower and the Lego remote control to control my Handyboard. What I am looking for is some code to decode IR signals using the built in IR receiveron PA2. Has anyone done that before? THX Chris (24 years ago, 26-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Lego Rotation Sensor
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There aren't user-adjustable thresholds in my Exp Board LEGO rotation sensor code. Rob, could it be that you are spinning the sensor too fast? In the docs there is a note that it only can deal with 16 rotations per sec. Fred In your message you (...) (24 years ago, 26-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Lego Rotation Sensor
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Tweek your thresholds! (...) (24 years ago, 26-Feb-01, to lugnet.robotics.handyboard)
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| | Lego Rotation Sensor
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We are using the expansion board libraries to drive the lego rotaion sensor and seem to be getting funny output to the handy board. We hooked up the sensor to the oscilloscope and we can see the voltage transitions on the screen, but the Handy (...) (24 years ago, 26-Feb-01, to lugnet.robotics.handyboard)
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| | reading sensors
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Hi everyone, I'm trying to hook up a moisture sensor to the HB but having some errors. These are resistive type sensors so I have it connected to the grnd and signal on the HB of the analog ports. After connecting to the HB, at the C prompt I tried (...) (24 years ago, 23-Feb-01, to lugnet.robotics.handyboard)
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| | AC/DC Adapter replacement
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Hi. I am building a mobile robot, which should operate during days continued in external enviroments. For this reason I need to replace the voltage adapter of my HB for Lead Acid batteries. I plan to use some Lead Acid batteries like primary feeding (...) (24 years ago, 20-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Is there a benefit in delegating processing tasks?
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Rainer, thank you, this will most definatly help. It is good that i will not have to desighn this from scratch. (24 years ago, 16-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Is there a benefit in delegating processing tasks?
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(...) Hi Andy, we did it the way you described, but with a 6.270 board (little brother of handy-board). We earned performance on 6.270 with it, because the only thing we had to do is to parse the string received from serial port. We attached a (...) (24 years ago, 16-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Is there a benefit in delegating processing tasks?
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Thanks for the insight, I am sorry that I did not mention the main controller would be a Handyboard (implied though due to the news group). This is still a good point and has given me a lot to think about. The slave controller would continue until (...) (24 years ago, 16-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Is there a benefit in delegating processing tasks?
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The advantage of distributed processing is that you can take a sometimes considerable load off the main MCU. Consider a speed regulator: a sensor is needed to continuously monitor the speed at which the wheels are turning and adjustments in motor (...) (24 years ago, 16-Feb-01, to lugnet.robotics.handyboard)
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| | Is there a benefit in delegating processing tasks?
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I have noticed low cost PICs (such as OOPic) that are capable of controlling (and getting useful data out of) devices like the Polaroid sonar rangefinder and other devices. Is there a benefit in delegating processing tasks such as this to a (...) (24 years ago, 16-Feb-01, to lugnet.robotics.handyboard)
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| | power supply voltage
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Hi from France ! I have assembled a Handy Board that works well with the original 9.6 V battery pack, but I would now use a separate power source with bigger motors to have more torque (I use a 7.2 V propulsion pack, with a H-bridge system). Since (...) (24 years ago, 15-Feb-01, to lugnet.robotics.handyboard)
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| | handy board code
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Hi, I am a begginer programer and I'd like to know if there is anyone out there who has written code for there handy board bot that I could get and learn from? I have all of libraries from the HB site, but nothing that does a full routine that I can (...) (24 years ago, 13-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Underwater Sensors
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(...) First off, beware that ordinary tap water contains dissolved impurities and is electrically conductive. (Water itself, BTW, is actually an insulator - it's the dissolved impurities that give it conductivity). It usually isn't an issue with (...) (24 years ago, 12-Feb-01, to lugnet.robotics.handyboard)
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| | Check out this site!
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Terry Gathright came across this great site and thought you might want to check it out. We hope you enjoy it! (URL) Gathright wrote: Hi Guys, Check this location for some hi power motor drivers, I have ordered two of the 35 amp boards and will let (...) (24 years ago, 12-Feb-01, to lugnet.robotics.handyboard)
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| | Re: downloading pcode
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Make sure that your phone wire between the HB and interface board has four wires, most generic phone wires only have two wires in them. -Dan (...) and (...) MAX232 (...) I (...) any (...) (24 years ago, 12-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Underwater Sensors
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James, maybe a moisture sensor out of a VCR could be modified to meet your needs??? They are made to detect condensation in VCR's. but if all else fails... water is a conductor, so you could theoreticly just put two bare contacts on the outer part (...) (24 years ago, 12-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Short Circute Problem -- EMERGENCY
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Raju, I have a handyboard version 1.21, on this board the battery led is working properly when it lights at power on and then goes off. According to the manual it should only remain lit when the power is too low indicating a dead battery. So I (...) (24 years ago, 12-Feb-01, to lugnet.robotics.handyboard)
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| | Re: downloading pcode
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Brian, I had the same problem with a board I built. It turned out to be the memory was bad. I would check all the solder connections to the memory socket and make sure that it is seated properly. -DAN (...) (24 years ago, 12-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Underwater Sensors
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If you had two wires hanging out, stripped at the ends, you could just check the resistance across them. Water usually has less resistance than air. (not a very cool solution but I think it would work) (...) (24 years ago, 11-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Sonar and the expansion board.
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Nick.. I have exactly the same problem.. I couldn't even get the 'clicking' to start with and the chips on the sonar board got a little warm. I then have fitted the diodes in series with the power to the sonar board (connector pin 9) and added a 1K (...) (24 years ago, 11-Feb-01, to lugnet.robotics.handyboard)
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| | Underwater Sensors
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Anyone know of any sensors that could be used to tell if a robot is underwater or not? I'm working on an amphibious robot and need a way to tell what environment I'm in at any given time. Thanks. James (24 years ago, 10-Feb-01, to lugnet.robotics.handyboard)
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| | Re: downloading pcode
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After the Hyperterminal test I found that the loopback portion of the test failed. I have checked the continuity on each line of the phone cable and it looks good. As mentioned before the MAX232 chip on the Interface board has been replaced. I will (...) (24 years ago, 10-Feb-01, to lugnet.robotics.handyboard)
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| | Re: downloading pcode
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Hi -- it might be driver issues on the Windows site. Please go through the debug instructs at (URL) let us know where you stand after the HyperTerminal test. Fred In your message you said: (...) (24 years ago, 8-Feb-01, to lugnet.robotics.handyboard)
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| | downloading pcode
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Hi everyone, Need some help downloading pcode. Have a row of black squares right now and have tried several different computers with the same 'wrong port or board mode.' I'm sure its in the bootstrap mode and also have replaced the MAX232 chip on (...) (24 years ago, 8-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Short Circute Problem -- EMERGENCY
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Hi, guys i realy in trouble now. i thought my memory fried out and replaced it with new chip and quad nands(hc132). but still no luck. i ordered processor from B.G.Micro and waiting for that shipment. do you guys have any idea what's the problem (...) (24 years ago, 7-Feb-01, to lugnet.robotics.handyboard)
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| | Equivalent/Compatible sensor to Sharp IS1U60
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Hi All, I was wondering if there was a another sensor compatible with the handy board that i could use in place of the Sharp IS1U60 IR demodulator, that is more readily avalable (ie in Radio Shack etc), to recieve signals from a Sony remote control (...) (24 years ago, 7-Feb-01, to lugnet.robotics.handyboard)
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| | where is ldxibase.asm
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Hi, I am doing some assembly programming for the Handyboard and I can't seem to locate the file ldxibase.asm used in many of the .asm examples I have seen posted on the Handyboard site. Any idea where I can get it? Or tips on creating it. Also, I (...) (24 years ago, 6-Feb-01, to lugnet.robotics.handyboard)
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| | Re: IC problem
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Fred and Jim, Thank you for your quick responses. I can now see that I was trying to make a relatively simple piece of code very complicated. I rewrote the program using Fred's suggestions and wound up with the following simple, efficient program (...) (24 years ago, 5-Feb-01, to lugnet.robotics.handyboard)
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| | Re: IC problem
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Hi. The default process is running of out stack. This is because you've written a program in which one function calls another, which calls another, which calls the first. Each time a function is called, an internal "call stack" must keep track of (...) (24 years ago, 4-Feb-01, to lugnet.robotics.handyboard)
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| | IC problem
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I have written a small program for the Handyboard to test program flow in IC. It is supposed to print "Step1", "Step2", Step3" in sucession to the LCD in an endless loop until I reset the board. It works properly through 12 cycles but on the 13th (...) (24 years ago, 4-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Short Circute Problem -- EMERGENCY
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Hi guys , i tried all the tests mentioned in the HB assembly to find out which part of the HB blown. No luck. i am giving the results here: 1) Tested the interface and charger board - looks good. (Both power supply and the MAX232 circuit) 2) Tested (...) (24 years ago, 2-Feb-01, to lugnet.robotics.handyboard)
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| | RE: 68HC11 (Evaluation Board)
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I was wondering if anyone was aware of any pre-existing library calls that would allow an individual using an Evaluation Board (EVB-68HC11)+ Buffallo Monitor(ImageCraft C v5.0) to access the system clock. I've noticed that with using Interactive C (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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| | unsuscribe
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How do i unsuscribe from the list? Thank you. (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Short Circute Problem -- EMERGENCY
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Hi Rainer, thanks for your advise on this. i will fallow the test cycles mentioned in HB manual. What i noticed is , charging circuit(changeing/interface board) working and HB is working in bootstrap mode also. it is able to sync with IC in (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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| | Re: hacking servo motors
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Thanks guys(Rainer and Gary) for your valuble ideas. i think i will go with the Rainer's method because of the simpicity(only one motor). any way i designed my sensor module for beacon finding long back with three sensors. so now i got confidence (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Short Circute Problem -- EMERGENCY
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(...) Hi Raj, first you should have a look at the assembly manual (URL) are testing description for every step of assembling. So you'll possibly find the proplem on your own. If not you will have to describe the spot you touched your HB more precise (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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| | Short Circute Problem -- EMERGENCY
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Hi Guys, I got a serious problem with my HB. Bymistake my 12 volts 1 amp power cord touched to HB(which is on at that time) circut track near the HB's direct charge connector. then there is short circuit crisp sound from that are and HB stoped (...) (24 years ago, 1-Feb-01, to lugnet.robotics.handyboard)
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| | Re: Looking for GP2D02 sensor connector
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(...) (URL) (...) (24 years ago, 31-Jan-01, to lugnet.robotics.handyboard)
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