 | | Re: Expansion board assembly tips?
|
|
there are bldg tips at (URL) your message you said: (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Large circuit construction - How?
|
|
Hi All What is a good method to build circuits with say 5-10 ICs or more (say 14 to 20 pins on each IC) and assoicated discretes? I have been able to construct on Rat Shack et al copper proto boards circuits with 1 or 2 ICs and point to point wiring (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Expansion board assembly tips?
|
|
Hello All, My expansion board went together well considering I have little experience building kits. Try to get the header pins straight before sodering all the pins. Terry G. ---...--- (...) wondering (...) at (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Stack Overflow
|
|
Hi everyone: Sorry for the reply latency, I was buried under an avalanche of work and assignments. Changing the format of the code (as detailed below) helped immensely. I re-wrote two of my drivers to use the increased size, and everything is (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | HELP
|
|
I am just wondering if anyone has had an experience with New Micro's NMIX - 0020 board before? I am having problem downloading my program. Regards, Felix (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: MC 68HC711 E9CFN2 - please help me as soon as possible!!!!
|
|
(...) The EPROM is probably disables with a setting in the config register. If folks are looking for cheap 68HC11A1FN's, I was able to get 'em for about $5 each, and they came with a bunch of other electronics, and 2 motors. Turns out Connor disk (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Purchase a handyboard? where???
|
|
(...) I recommend saving up your milk money and buying a pre-assembled, tested HandyBoard. Sure, it costs a little more, but for me (electronics moron that I am) it was worth it. I bought mine from Patrick Hui at the Robot Store in Hong Kong. I can (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Polaroid Sonar Questions
|
|
(...) <snip> (...) I found that returning the median (middle value) of three successive readings filters out the noisy readings quite well--especially the occasional large error. Just a couple nested if-then statements are needed. (...) Sure, that (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Expansion board assembly tips?
|
|
I just got a expansion board kit from Douglas Electronics and was wondering if anyone has any tips for assembling the board, I'm quite experienced at building kits but I thought maybe someone who had built the kit already might offer some advice, (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Stupid multiple sonars...
|
|
(...) It is correct that you can use the remaining SPI pins as digital outs to trigger a second sonar. I've done it and it works fine. It's also true that there *is* signal contention on the echo lines if you simply plug 'em both into the same TIC (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Beginner's questions...
|
|
(...) You'll need slotted disks mounted on the axles positioned between the emitter and the detector. I recommend using ones from a dead computer mouse. (...) You ought to check for wiring problems and excessive friction in the gears and axles. That (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | RE:Handyboard project
|
|
Hi James, I purchased an assembled and tested H Board from Patrick Hui for about $200, as well as the registered version of IC. Also got his sensor kit ($15). Expansion Board was purchased from Gleason for $59. Also bought the sensor/motor kit from (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re:Re: Beginners questions
|
|
I got the gear sets from HVW Technologies in Canada. (URL) gear sets were pretty cheap when you take into account the exchange rate - about $20 for two. They come with motors but youll have to swap them with something else because the motors are (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | etching a handyboard
|
|
What is the best way to manually etch the handy board, i've etched it by passing the circuit layout through the printer 3 times then ironing it on to the copper board. This works well but some traces bleed together. I have access to a PCB repair (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Canadian Boarder
|
|
Digikey has a Canadian division also, its based out Ontario. I just recieved a list and they mostly everything on the list that has digikey beside it but nothing else. The total cost for these parts is $60 + or - $5. I hope this helps, where are you (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Beginner's questions...
|
|
Hello again all, Well, I've got an HB, HB Expansion board, geared motors (motors from Gleason, gears from HVW, "mashed" to fit), some good batteries and a downloader. I've also got sensors such as QRB1114 infared detectors, some General Electric (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: I need a little help with understanding processes
|
|
The most common problem many people have regarding processes is that they incorrectly assume you should call start_process repeatedly in order to keep a background process running. This is completely wrong, and it will crash the system one way or (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Polaroid Sonar Questions
|
|
Good comment, Duncan. I intend rotating the 45° coverage through a full 360°. Using multiple transducers allows for more frequent pings and (I think) will provide greater resolution. - - - Nick - - - (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Purchase a handyboard? where???
|
|
Hi all, I want to know if Anyone will be selling the handyboard @ the Trinity firefighting home robot contest this year in Conn? also any links to where I can get one otherwise would be much appreciated. thanx -Mike (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
|
| |
| | I need a little help with understanding processes
|
|
Hi: I know the essential facts about IC's multitasking facilites and how to implement processes. But if you have too many processes is it normal for the board to reset? If so, how can it be prevented. Also how do I figure out for how many ticks to (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
|
