Instructables

Brennn10

  • Date JoinedJan 24, 2007
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Orangeboard

pe2hlc1 year ago
Hi I also have such a robot met 4 engines, but I would like that he displays the distance to an obstacle in a LCD, it works well with the sketch of robot4wd_06.pde Eric Pavey - www.akeric.com, but with the lcd working together the engines do not properly. Have you got a other sketch? It is hard to explain in words, but I hope you get the idea.
To have that much peace and self disciple near a Dunkin Donut... AMAZING!
Gjdj35 years ago
Hey, I think I saw your project in the "New Arrivals" section of the latest Edmund Scientific catalog.
Brennn10 (author)  Gjdj35 years ago
Awesome! I haven't received my catalog yet, but I definitely hope people buy them! Lol, it isn't exactly a new arrival, it was listed on their site for maybe 7 or 8 months now.
Gjdj3 Brennn105 years ago
Yeah, congratulations though! How much money do you make per sale? Or did they buy the rights from you?
Brennn10 (author)  Gjdj35 years ago
Thank you! It has been a very exciting venture! I probably shouldn't release my profit margin; you probably understand. They didn't buy the rights from me; but rather they send me a fax requesting "x" number of kits, and then I ship them off. So I am free to sell to other companies and people. I have a few deals that I hope to accomplish this summer.
Xellers5 years ago
Thank you for answering my question. I figured out how to take definite integrals too. Now I just need to figure out how to find derivatives and antiderivatives of more complex functions.
Brennn10 (author)  Xellers5 years ago
What do you need help with? With more complex functions, you will not be able to use the basic theorem, but rather substitution.
For example:
Taking the integral of 5((5x+1)1/2)dx

Here we need to substitute. (5x+1 is under a radical, which is why it is raised to the 1/2.

So first we will be doing something called substituting for "u".
So let "u" = 5x+1 (which is the value under the radical)
du = 5 dx
Now we just plug in. We see a 5 dx in the original function, so that would be du. Since du = 5dx Next, we see a 5x+1 in the function, so we replace that with u. (So now you put the u under the radical)
Your new integral would be, Taking the integral of du*u1/2 Now take this integral to get 2/3u3/2 + C. Now the last step is to plug you u value back in. So your final answer would be, 2/3(5x+1)3/2

It is hard to explain in words, but I hope you get the idea.
NamasteNick5 years ago
Thanks, and I do have a micro SD but it's not compatible to the adapter that i have.
Brennn10 (author)  NamasteNick5 years ago
I bought an SD card reader at my local office supply store. It is very easy to use because it works just like a flash drive. Plug it in, load the music on to the card, and then remove the micro SD from the reader and stick it into the phone. I have an Env2, so if you have any more questions let me know.
dsman1952766 years ago
you changed your avatar!
Brennn10 (author)  dsman1952766 years ago
Yea, I changed schools so I had to switch to a new picture.
Flumpkins6 years ago
Do you collect coins? You know alot about them.
Brennn10 (author)  Flumpkins6 years ago
Yes I do!
I was looking through my dads collection today. HUGE!!! He let met have a 1972 proof set. It has a Penney,a nickel, a dime, a quarter, and a half dollar.