No, I am not even close to being a math genius. During my undergrad degree it was the most challenging and rewarding subject (chemistry and physics were also challenging, but for some reason I did not find them nearly as rewarding). I had to, and wanted to, study hard for all of my math courses...
I have looked at countless job postings and PhD programs related to DSP and computational statistics.
Like story645 said, machine learning (AI, data mining, computational statistics) will get you into the financial area (get ready to live in NYC and be "treated like a slave"), although you...
Try to do work that you will enjoy. While getting my BS in computer science, I fell in love with math. I went to work for a year as a code monkey, then I went back and got my MS in applied math. I feel like it was a very good decision.
With an applied math degree you will be able to teach or...
I have a 5-wire unipolar J835L. I have not been able to find a data sheet on it, but I have found this diagram:
also, the motor has the following information printed on its label:
Uni-Polar, Bi-Filar
120 Ohms
7.5° per step or 48 full steps per revolution
JARL J835L PM 24P
I have connected a...
Hi vk6kro and Phrak,
Oh, yeah, the tail rotor is uncambered then.
Good idea.
Apparently my brother took it way up and crashed it on someone's roof. Now it just wants to spin and it is impossible to fly. We'll have to get that fixed first! :rolleyes:
It is PWM driven. I hooked a scope to it to measure Vavg and got:
Full forward 700mv
Idle -515mv
Full back -700mv
I think you may be right about the slippage. The fan blade pulled right off.
Hypothetically, does it simplify things knowing that the H-Bridge is good for one polarity but not the other? Meaning, couldn't the H-Bridge output drive the chopper when going backward and be used to control the amplifier gain when going forward?
Oh yeah. I didn't even think about that.
Good idea. It seems hobby places are understandably picky about helicopter returns, but this one has never flown forward well.
My brother bought a http://www.centrix-intl.com/details.asp?productid=4909" RC helicopter. It has a tail rotor which is mounted parallel with the ground and enables the chopper to go forwards or backwards. The helicopter goes backwards great, but it doesn't go forward too well. I would like to...
Hi all,
I haven't used my Voyage for a few months. It has not had batteries in it during that time. Today I put batteries in it and a column of pixels was blank. I checked 15 minutes later and it was still blank. Now, five hours later, I checked it again and the pixel column is back! What...
Hi MATLABdude,
Thanks for the awesome response! I love the Dilbert clip.
You are right, all of the diodes are LEDs.
I added a ground on the other side of R6 too. Now I am thinking of R6 as the load that is being powered.
Below is the truth table. The values are from running a...
I have a schematic with a section that I don't understand. I have recreated in LTSpice and simulated it to get a better understanding of how it works. As I understand it, the circuit uses the input from a uController (labeled V3) to open/close a 12V output (P1-13). When I simulate this circuit...