If you can't get a germanium diode, any small signal silicon diode will do, e.g. 1N4148 etc., but you will have a voltage drop of around 0.6V instead of the...
That's a great article in all, but where's the ROBOT? We all came to see the robot... :) ... (chemistry, power density, voltage ... myEarthLink News ... ...
So you want to be famous? Out do these guys. http://my.earthlink.net/article/tec?guid=20080528/483cd8c0_3ca6_ 1552620080528-1394824699 Do it by climbing on to...
Wilf, I'm actually using a 4.7F cap. I did a little research and it seems like caps would be the better way to go. They have a longer life, deal with...
Jo, I just posted back to Wilf in this same thread, and I'll put it here too. Instructables is a GREAT site! (Careful, it's addictive!!!!!) I'm building Keso's...
The "jar of fireflies: is a very impressive project.t's like candy, you can just do one! I've probably made a half dozen so far, they are great as gifts. For...
Ok so I am going to throw a few more variables in here. I am going to try and pack as much power into the tube as possible as I do not want to change the...
Hi. Here is a chance for us BEAMers to show the world what can be done. http://www.instructables.com/contest/robotcontest/ This is my last night with an...
For an analog solution do a search for QLF. Especially look at the QLF11 circuit which includes a voltage regulating, dark turn-on SE. Four LEDs flash...
How long is the tube? Wolud it be a magic POV wand? With one or two pager vibrators in the handle operating at different RPMs, a lighted flashing LED at the...
Hi everybody chk the link below http://solidedgetutor.blogspot. com A valuable tutorial for solid edge. This blog Teaches sketch modeling. PART,sheet...
hi everybody, i have a slight problem with my bot. im trying to build a black vermin following the shematic from rays beambots. somehow the page doesnt load...
Hey Dude! Good to hear that you are building a 5 motor walker. Assuming you mean the HC14 for uCore, 74HC241 for waist driver and AC240 for leg motor driver......
Hey Wilf! Something sorta like that. Yours sounds much cooler than what I was thinking. <<grin>> Actually my daughter is a big Dr. Who fan and she wants to...
hi amit, thaks for the quick replys. i checked all the pins you mentioned in the first reply. they were all connected correct, except for d)pin (7 & 9) of...
Hey, Dude! HA! I made a mistake, sorry i was very tired yesterday. Yes, pins 7 and 9 have to be connected(They are for the motor), but it is actually pins 6...
hey all i haven't had much time to get anythign done on my bots having bought a house and bringing it up to par but today i got a major score from a neighbour....
A circuit with two oscillators, one for the motor and one for the LED, would do what you want, I think. Altering the duty cycles of the oscillators would alter...
Here is what I was thinking: http://tech.groups.yahoo.com/group/beam/files/Sionnach/ Can you really quick gut check this schematic and maybe make suggestions...
You really don't need 12V for this, and varying the speed of motors via voltage dropping resistors is not a good idea. 1k is much too large, anyway. Even with...
Here's a small change to keep the period constant. Cuts down the parts slightly, too. http://tech.groups.yahoo.com/group/beam/files/Jo%20C/SonicSDVarOscv2.GIF ...
A short description of operation may be useful. The idea is to be able to adjust the speed of the motor and the brightness of the LED. In Jo's circuit, the...
As a bigger challenge I will post a variation of the QLF circuit I call the QLFWAND. This circuit randomly cycles through all the colors of the rainbow using...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the beam group. File :...
beam@yahoogroups.com
Jun 8, 2008 4:49 pm
57935
I am working to figure out what batteries to use. I have a couple of AAAA they barely fit inside the tube - so I might have to get a slightly bigger tube. ...
Hello! I'm another noob who wants to build FRED. I tried to build it a year back, but for some reason only the other motor fired. The other one tried to fire,...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
