|
 | | Re: Overcharged battery?
|
| no i disagree with this answer. the HB is designed to be left on normal charge indefinitely. the batts can get a little warm. if they are hot then something is wrong, but a little warm is nothing to worry about. when fully charged and with no load (...) (25 years ago, 15-Mar-00, to lugnet.robotics.handyboard)
| |
|  
fred
(score: 0.872)
|
|
| | 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)
| |
|
fred
(score: 0.872)
|
|
| | Not SW, 20% off at Fred Meyers
|
| I opened my Sunday Seattle Times and went through all the adverts and there is a 20% off all Duplo and Lego coupon at Fred Meyers. The ones in Bellevue and Kirkland had just stocked up on Saturday, so there should be some good gettin'. I'm planning (...) (26 years ago, 16-Mar-99, to lugnet.loc.us.wa.sea)
| |
|
fred
(score: 0.872)
|
|
| | Re: Trip Reports?
|
| Like Fred, I'm looking forward to reading whatever folks post to baylug. Right now, Tom Stangl's site is providing my picture fix. Thanks Tom! If I had my head on straight a month or two ago, I should have organized, or at least suggested, a "sour (...) (26 years ago, 26-Mar-99, to lugnet.loc.us.ca.sf)
| |
|
fred
(score: 0.872)
|
|
| |
|
fred
(score: 0.872)
|
|
| | Easy communication between HBs
|
| After struggling with it for many hours I found an alternative to Randy's serialio.c serial communication which I couldn't get working. So I used the Pa7_9600 Baud Serial output from unknown origin (Fred?) ((URL) ial.html). I cut a standard RJ11 (...) (26 years ago, 17-Feb-99, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.872)
|
|
| | Re: handy board troubles...
|
| great, that's excellent! the key trick was pulling all the socketed chips. it's a weird but true fact that chips that don't have valid logic supplies can draw power in from their inputs pins (when the inputs are high) and operate off of that leeched (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.872)
|
|
| | Re: handy board troubles...
|
| re: this problem with the memory contents not persisting, check the separate power supply to the RAM (U14). you might need to remove all socketed ICs from the board 'cause power can bleed to chips via input pins. also check that U12 the DS1233 is (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.872)
|
|
| | Hooray! Discussion!
|
| I'm glad to see some active discussion from folks on the topic of a BA group. Please keep it up (and "Play nice. Don't fight! ;-). In the interest of keeping the discussion going, I'm not going to weigh in with any opinions for a week or so, but (...) (26 years ago, 17-Feb-99, to lugnet.loc.us.ca.sf)
| |
|
fred
(score: 0.872)
|
|
| | Re: resistor pull-up help!
|
| basically, yes. the inputs from the expansion board feed into the inputs on the main board. if you need a high impedance input, your best bet is to cut a trace on the main board and use one of those inputs. the exp bd takes over main board inputs 0 (...) (25 years ago, 23-Mar-00, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.872)
|
|
| | Re: resistor pull-up help!
|
| the exp bd inputs plug into the inputs on the main HB. so you still have to remove the pullup on the main HB. just cut the short trace on the underside of the board between the signal input pin and the pullup resistor. f. In your message you said: (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.872)
|
|
| |
|
fred
(score: 0.872)
|
|
| |
|
fred
(score: 0.871)
|
|
| | Problem resolved?
|
| To all, Regarding my previous... I am not sure if it was a soldering connection, but after retesting the output voltages it is very close.. Fred says that the voltages should be between, say, +9 and +10, but I'll get a 8.7.. Is this good enough? If (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.871)
|
|
| |
|
fred
(score: 0.871)
|
|
| | Stupid Sonars
|
| I have a extremely complicated two polaroid sensor set up going on... I had a diode connected to each of the ECHO lines so that I can combine the two lines together... However, no signal passes through this setup... However, I have validified the (...) (26 years ago, 22-Feb-99, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.871)
|
|
| | Markus hits the big time
|
| Wired ran a story about legOS today: (URL) they weren't able to get in touch with Markus directly. But they have the standard sound bytes from John Dion and Fred Martin. Jonathan -- Did you check the web site first?: (URL) (26 years ago, 23-Feb-99, to lugnet.robotics)
| |
|
fred
(score: 0.871)
|
|
| | Re: Sharp GP2D02 and assembly language
|
| Hi, I have the same problem. For now I don't care since the GP2D02 is the only thing connected to an digital output. I am using the following: Include: subroutine_get_userval: ldab USERVAL ; load USERVAL to d register clra ; clear upper byte rts ; (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.871)
|
|
| | Re: Working with Legos
|
| (...) That's an excellent suggestion. Thanks, Max. There are many other tips on Lego robot construction techniques in an article titled The Art of Lego Design by Fred Martin. It's available for download from the Handy Board web site: (URL) have been (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.871)
|
|
| | RE: IR outputB
|
| The software written by Max Davies should allow transmission as well as receiving. The information that I have doesn't include the hardware layout but as far as I understand the 1K resistor in the IR transmission circuit on the board should allow an (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
| |
|
fred
(score: 0.871)
|
