For those of you interested in measuring the intertia of your 'bots: I just tripped over this in the July EDN issue. Analog Devices has created a single chip...
On Fri, 6 Jul 2007 12:26:19 -0400 (EDT), Nick Cogghe <ncogghe@...> ... I've used some of the discrete chips (3-axis accel, 2-axis gyro, 1 axis gyro) to...
Reminder from: ORE_bits Yahoo! Group http://groups.yahoo.com/group/ORE_bits/cal Monthly meeting Monday July 9, 2007 7:00 pm - 10:00 pm (This event repeats...
ORE_bits@yahoogroups....
Jul 6, 2007 10:57 pm
7561
I added some photos of this darn board to my online album. http://picasaweb.google.ca/JJosephBedford/CruiseControl If you're curious, have a gander. You can...
... When I first saw that Sparkfun had made breakout boards for those accels and gyros I was expecting them to also make a small IMU controller like you did, I...
... Wow, those diodes have seen better days! Do you still have the one that fully corroded off? Looks like it'll be an easy desolder job, you have lots of...
If you desolder the other ones and do a diode comparison with an ohm meter, or an ac source and a o'scope, it will give you a pretty good idea if they are just...
... I'm not sure how using a switching diode in place of a zener diode (voltage clipping on input for example) would act. ... I would suggest simply cutting...
So, question of the week.....does anyone know how to make a small sort of hovercraft (say, 18" * 12"), doesn't have to carry much more than itself and...
How about: http://www.i-hacked.com/content/view/156/48/ http://www.makezine.com/blog/archive/2006/10/diy_hovercraft_with_4_pc_fans.html A coworker built the...
Ken: I have a pair of 9.6V propulsion fans from the techie garage sale a month ago. Call me if you need them for some push power. The lifting plenum is a bit...
Well, my first run, I use a piece of styrofoam with two computer fans and built a skirt with no bottom......didn't even budge. Wife indicated I was a bit of...
I believe CPU fans simply don't have the CFM needed. The best choice is to use an EDF (Electric Ducted Fan) for an RC plane. I have built an RC hovercraft...
Ducted fan....that would be the thing! I'm guessing you are right on the CFM. A better look at the specs suggest that they are pretty low. Good pics on the...
Interesting....looks very close to what the ducted fans look like. Right now, the ducted fan seems the best bet, and not too expensive (thanks Pierre). A...
Ken: I came across this hovercraft based system while looking for computer vision blob detecting algorithms: http://legend.me.uiuc.edu/hotdec/ I like how they...
I'm trying to blink two LEDs at different rates using interrupts from two timers. One interrupt has low priority and the other has high priority. Getting one...
Hi all, Sorry for the long delay in getting back to the group with an update on this, but here it is ... Well, after a long search and many chats and e-mails...
The problem has been solved. Its a C18 compiler gotcha! For the low priority interrupt you have a line like this: #pragma interruptlow LowPriorityTable BUT For...
Reminder from: ORE_bits Yahoo! Group http://groups.yahoo.com/group/ORE_bits/cal Monthly meeting Monday August 13, 2007 7:00 pm - 10:00 pm (This event repeats...
ORE_bits@yahoogroups....
Aug 10, 2007 10:57 pm
7586
Reminder from: ORE_bits Yahoo! Group http://groups.yahoo.com/group/ORE_bits/cal Monthly meeting Monday August 13, 2007 7:00 pm - 10:00 pm (This event repeats...
ORE_bits@yahoogroups....
Aug 12, 2007 10:58 pm
7587
DOH! I ordered five of the TXRX24G transceiver modules and forgot to order the suface mount connectors (TXRX24CON). If anyone is ordering from qkits.com in the...
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