Hi Dennis, There are a few improvements you'll want to make: 1 - Add weight. The sumovore only weighs in around 380 grams (if memory serves me correctly). 2 -...
16082
harish
harishpkl
Dec 31, 2003 4:13 am
hi harrison thanx for ur prompt reply.Shd i go for digital method of speed measurement.like mouting sensor athe edge of gear teeth. and using timers for...
16083
harish
harishpkl
Dec 31, 2003 6:53 am
hi all does anyone has code for AT89S8252 single master multi slave using SPI and using SPIE interrupt regds hm [Non-text portions of this message have been...
16084
Dennis Clark
dennis_lm_clark
Dec 31, 2003 7:36 am
Dave, Thanks, I haven't yet got mine to act in any rational manner. When first on it just jerks a bit until a front sensor sees someone, then it rushes off to...
16085
chandannayak2003
chandannayak...
Dec 31, 2003 8:05 am
Hi , First of all , I wish everyone a very very happy new year... I need to compress a spring using a motor ( this is for a robot I am currently working on )....
16086
Robert Wolcott
rwolcott23
Dec 31, 2003 8:38 am
I was presented with a similar problem on a recent robot project. One issue is that as the spring is compressed the torque demand on the motor will increase....
16087
Dave Hylands
dhylands_99
Dec 31, 2003 10:01 am
It's worth spending a bit of time tuning. Especially the IR sensors. Mine seems to behave pretty sanely. It's easiest to tune by switching off the motors and...
16088
Dennis Clark
dennis_lm_clark
Dec 31, 2003 4:51 pm
Dave, Mine acts a bit randomly WRT edge detection response, sometimes it does the "edge charge", sometimes it'll back up with a little turn and sometimes it...
16089
Michael
rabidlabs
Dec 31, 2003 7:41 pm
have you tried the AVRFreaks site? ... slave using SPI and using SPIE interrupt...
16090
skyrudolph
Dec 31, 2003 8:46 pm
I am working on a project that involves a Basic Stamp (BS2) in one box, and a 4 digit 7-segment LED display (with controller) in another. The 7-segment driver...
16091
Tom Capon
robot@...
Dec 31, 2003 8:47 pm
Hey, Has anybody ever tried hooking up a 30-pin SIMM computer memory module to a microcontroller? I got ahold of this 1993 computer repair guide that has the...
16092
Larry Barello
lbarello
Dec 31, 2003 9:19 pm
The at89 series is Atmel's 5051 compatible chips. AvrFreaks would have nothing to do with them. ... From: Michael have you tried the AVRFreaks site? ... slave...
16093
GrantM.
solargrant
Dec 31, 2003 10:31 pm
... Very close, measured at 387 grams. "Only"? its the heaviest out of the box sumo kit on the market, besides its nice to have a bit of room for adding ...
16094
Dennis Clark
dennis_lm_clark
Dec 31, 2003 10:42 pm
My biggest grouch with the kit was that there was no way to get the motors to go on straight. The "rear" motor butted up agains the motor terminal blocks...
16095
Doug Evans
DEvans@...
Dec 31, 2003 10:46 pm
You might want to take a look at the Maxim RS485 serial drivers. I'm sure you could figure out a method to drive these using the Stamp, The RS485 will extend...
16096
Kipton Moravec
kipton_moravec
Dec 31, 2003 11:00 pm
There are a bunch of ways to make this work. But if you are only going 30 Feet TTL "should" work. It is not like you are driving the LEDs from 30 feet away....
16097
Kenneth Maxon
kmaxon2002
Dec 31, 2003 11:08 pm
He may have meant 8051 as opposed to 5051. -Kenneth (Unit 3's in trouble and it's scared out of its wits) -Geddy Lee ... From: "Larry Barello"...
16098
Dave Hylands
dhylands_99
Jan 1, 2004 12:19 am
Hi Grant, ... No disagreement here. But at 387 grams it's not competitive against other bots that are closer to 500 grams. ... I was using stock motors. I...
16099
Phil
phil1960us
Jan 1, 2004 12:39 am
I'm trying to search through the messages here and only seem to be able to find stuff that's around 6 weeks old or less. However, I can see messages all the...
16100
Alan King
alantak69
Jan 1, 2004 2:14 am
... Much better to just get a modern cache SRAM or flash chip. While it initially looks like using these might be fun, the drive requirements just aren't...
16101
trbrenke
Jan 1, 2004 3:13 am
is this PC gone? If not I will take it. ... From: "Larry Barello" <yahoo@...> To: "srs mailing list" <SeattleRobotics@yahoogroups.com> Sent: Tuesday,...
16102
harish
harishpkl
Jan 1, 2004 3:52 am
hi yeah i have tried avrfreaks site but nothing related to SPI ATMEL 89S8252 could be found.. any idea how to proceed ? I have treied so many techniques for...
16103
Kenneth Maxon
kmaxon2002
Jan 1, 2004 4:45 am
Have you thrown a scope on the output pins to see the data that is coming out of the primary? Check the bit-widths making sure you've got devices of...
16104
Larry Barello
lbarello
Jan 1, 2004 4:57 am
Taken already. Thanks! ... From: trbrenke [mailto:trbrenke@...] Sent: Wednesday, December 31, 2003 7:16 PM To:...
16105
harish
harishpkl
Jan 1, 2004 5:36 am
hi maxon the following is code snippet of master and slave routines. slave is interrupt based and will recieve 4 bytes as the maste uses snd_spi() function...
16106
Rich Chandler
mauser712
Jan 1, 2004 5:40 am
... <...> ... No idea, but I wouldn't put it past Yahoo. Delphi Forums has undergone similar functionality degradations in the past (And then offered to give...
16107
harish
harishpkl
Jan 1, 2004 5:40 am
hi posting again the correct code some lines were missing regds hm ... else { TI = 0; RI = 0; } EA = 1; } ... From: "harish" <harishm@...> To:...
16108
Kenneth Maxon
kmaxon2002
Jan 1, 2004 5:48 am
On other derivatives you've got to manually clear the receive bit after each byte received. It does not appear that you are doing this. Check the manual, but...
16109
Kenneth Maxon
kmaxon2002
Jan 1, 2004 6:05 am
A quick net search turned up the following SPI example from the Keil compiler folks. Download it and use it as a stepping stone towards fixing your own code....
16110
harish
harishpkl
Jan 1, 2004 7:24 am
dear maxon thanx for ur prompt reply.. i have tried that too clearing SPIF manually as per the datasheets of 89s8252. but its written there if we read SPSR and...
