Reminder from: vancouverrobotics Yahoo! Group http://groups.yahoo.com/group/vancouverrobotics/cal Vancouver Robotics Club Meeting Sunday March 8, 2009 10:00 am...
vancouverrobotics@yah...
Mar 2, 2009 5:01 pm
3012
Hello everyone. I am having alot of problems with the 38khz infrared emitter using a 555 timer...when prototyped, it'll generate the 38khz on pin 3 with yellow...
Success with the latch! I am using 4011 two input nand gate but I think I need a little refresher on this because I have a little glitch, tho it works. Â ...
I'm glad you got it, this thread was beggining to drive me nuts you should find this works, may reduce your chip count. how it works: the clock is enabled as...
dan williams
dan_williams@...
Mar 3, 2009 1:41 am
3015
the duty cycle has to be almost dead on 50% if you cant get teh 555 to do 50% duty (thats about its limit) then do 76Khz and use a T flipflop to divide it...
dan williams
dan_williams@...
Mar 3, 2009 1:45 am
3016
Hi Dan, the power filter...please elaborate to the ignorant...the datasheets that I've seen or applications of the detector requiring "power filter" I had...
I have to goto bed now, I'll try to elaborate more tommorow night, but if you grab a datasheet for an ir reciever off digikey, you should see they have a fine...
dan williams
dan_williams@...
Mar 4, 2009 6:04 am
3018
I'll be bringing the table top challenge course to the meeting on Sunday for anyone and everyone to practice with. Hopefully everyone has been working on their...
I wasn't clear about what the edges of the table 'are like' could you snap a pic for me who cant get to the meeting? dan ... -- Dan Williams, Owner ...
dan williams
dan_williams@...
Mar 4, 2009 3:13 pm
3020
Hi All, Short story: Does anyone have an ATMEL JTAGICE mkII I could borrow? Long story: I started playing with AVR32 UC3Bx controllers. The downside is that it...
Hi James, sorry I have lent my mkII to a friend. I can bring my stk500 to the meeting (if that works with the avr32) and we can resurrect your processor there....
Hi James, I have one of those core.st AVR32 kits, I can bring it to the next meeting if it would help. Unfortunately all my programmers are for the AVR...
Hi Dan, The course will have extended edges e.g. the white area will extend beyond the outside borders of the course by at least 9 inches, probably more like...
Hi guys, unfortunately I have to move the Op-Amp introduction to the next meeting, in April. Hope you can all make it on Sunday and don't forget that it's...
I been scratching my head on how the robot would know if the line it crossed was the death-edge or the division to the next cell, I read teh design doc pretty...
dan williams
dan_williams@...
Mar 5, 2009 4:41 am
3026
page 5 http://document.sharpsma.com/files/gp1um26x_e.pdf 47 ohms, and 47uF as a low pass filter. dan ... -- Dan Williams, Owner http://eds.dyndns.org/ ...
dan williams
dan_williams@...
Mar 5, 2009 4:43 am
3027
Hi Markus,Bob, I've read an interesting thread on avrfreaks about the fact that it is impossible to erase the bootloader with the batchisp3 script. (avr32...
Oh good point about DST. Pick one of the following choices to calculate the correct meeting time for you: (a) I will not change my clock on Saturday night,...
Hi Dan, Well there are likely many ways to solve this problem but the method I plan to use is to count the number of divisions crossed. Your robot starts in a...
ah! I thought the start direction was random there :) makes it a different game ... -- Dan Williams, Owner http://eds.dyndns.org/ Electronic Device Services ...
dan williams
dan_williams@...
Mar 5, 2009 5:17 am
3031
LOL, thanks Bob, that helps a lot! ... Oh good point about DST. Pick one of the following choices to calculate the correct meeting time for you: (a) I will not...
Reminder from: vancouverrobotics Yahoo! Group http://groups.yahoo.com/group/vancouverrobotics/cal Vancouver Robotics Club Meeting Sunday March 8, 2009 10:00 am...
vancouverrobotics@yah...
Mar 6, 2009 4:56 pm
3033
well? cmon, I need to know if that helped you at all! hey what happened to the guy making the bom..... er ... countdown unit? did he get it working? which...
dan williams
dan_williams@...
Mar 7, 2009 5:10 am
3034
Sat April 11 Big Computer Swap Meet Lots of quality dealers! Don t miss the selection ! Get all your new & used monitors, printers, hardware, software, parts, ...
I assembled the course today and took a few photos: http://vancouverroboticsclub.org/contests/basic-table-top/course-photos/ It is constructed from 4 sheets of...
Oh sorry to kept you waiting for the results.... The countdown part using IC4029 CarryOut as signal to Nand Gate Latch then feeding signal back to CarryIn...
the filters are something you notice tearing apart old vcr's and cd players. :) you dont need a scope to tune it, put a flipflop on it to divide the freq by 2...
dan williams
dan_williams@...
Mar 9, 2009 3:42 am
3038
Hello Group, Has anyone found a local source for the small square QRD1114 IR sensors used for the sumovore from Solarbotics among other mini sumo's. I know I...
RP Electronics is mising off your list. dan ... -- Dan Williams, Owner http://eds.dyndns.org/ Electronic Device Services (604) 886 5934 2022 Lower rd Roberts...
dan williams
dan_williams@...
Mar 18, 2009 4:27 am
3040
Hi Larry, I got 2 of them and don't use them. I also have 2 QRB1114 if you want them. Did you need more? If you want them send me an email and we can arrange a...
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