So I am wiring up a H-bridge for a small electric motor for a robotics project and am a little confused.
This is the only schematic that I can find for this H-bridge.
There is a pdf on that site that is...
So I got into an argument with a buddy over the following:
I originally inserted a hard drive into my system and it was labeled hda, what i hadn't notice was that it was on the master pin setting
now when i switched the pin to the slave setting and rebooted it showed it as hdb
are the two...
for a laboratory I had to calibrate a torque sensor that was based upon a strain gage.
Pricey but highly accurate and easy to use
You would input a known voltage and read the output voltage. The voltage would change dependent upon the torque...
I picked up a good and cheap AC motor that came with its own capacitors <not wired in though>
The capacitors are these
and this is the diagram on the motor
Now I tried putting this together but...
Not sure if this is the right place for this, but here we go.
During the Fischer-Tropsch process to create synthetic oils one of the byproducts is water. Is this water removed from the oil somehow?
Also I have been told from some of the engineers that I work with that synthetic oils absorb...
I was hoping that someone here would be able to help me understand variable pitch blade systems for fans/turbines and how they work
I have already searched the internet quite a bit without much luck
There are a few mechanical drawings but they leave a lot to the imagination
Any help is...
I have been reading up using the Line-in on my computers sound card and the pogram XOSCOPE to be able to do some various measurement/analyzing
But before I attempt to actually plug anything together i want to make sure I don't wreck my soundcard
I have found that some soundcards have the...
I am not sure if this is exactly the right place but it works either way.
I am interested in learning more about Composite Design Techniques
mainly fiber based materials (carbon, kevlar, fiberglass, ect...)
does anyone here know of any good resources/books that focus predominantly upon this...
sure your best way to really thwart most port attacks is to just change the ports to somethign really random
are you using an active or passive ftp server?
i have never run filezilla as a server
i rum proftp on an ubuntu box and once i got it set up i haven't honestly had many problems
i recently (2 months ago) bought an IBM thinkpad and have been incredibly satisfied, the only downfall to thinkpads is that they are more expensive than dells,gateways, ect (no comment on those manufacturers)
thinkpads also appear to be one of the most highly supported machines as far...
I am trying to find more information about parabolic leaf spring designs.
I have allready learned linear leaf spring design, and I am curious to know how parabolic differs. (besides higher powers)
For my Design of Machine Elements class this problem is being posed.
This is exactly as the problem is stated.
The torque on the 400mm -diameter shaft connecting the flywheel with the jaw mechanism should never go above 700kN m. Dimension a copper square tapered key so that the shaft is not...
i personally enjoy ubuntu (almost everythings works right out of the box)
here is a step by step to set up a server
it is very detailed
here is a good reference/walk through if you use ubuntu...
well this is all personal opinion
but i have never heard anything good from a dell
i am not very familiar with the other model though
i recently (2 weeks ago) bought a laptop with some of the same ideas for use matlab, pro engineer, ect ...
i went with an IBM thinkpad T42 and customized it...
Ok I am sure the title caught your attention, but it is not for me, it is for my cat, just kidding.
It will actually be for a model rocket I am building.
I would like to design a ram-air parachute to control a descending rocket (toggles will be attached to either servos or linear actuators and...
I am interested in learning how to control various motors
via my linux computer for robotics projects and possible cnc machines
it seems that serial ports are the most prevalently used for basic robot control
does anyone have any suggestions on where to start?
Well I recently just tore apart an old laptop and salvaged the monitor (still good)
Now I am pretty sure it is nearly impossible (for me right now) to turn it into a useful desktop monitor
but does anyone know of any other cool projects/ideas to do with it?
be warned i am a senior in mech. engineering
and i have been interning for 9 months now doing vibration analysis on rotating machinery
so you were warned...student and intern
but from what i have picked up most of the rolling element bearings i have seen how up at the following frequencies...
if you can i suggest taking a vibration reading of the bearing assembly in the axial direction
you can then accurately gauge what is failing within the bearing
be it a race, cage, or ball itself
is it a drive end or off end?
direct drive or attached to a sheave of sorts?
i thought that to charge a battery
the voltage potential just had to be higher than the batteries
cause this was a solar panel designed to charge car batteries and the like
and the battery is getting charged each day...
could you help clear up my misunderstanding to what actually is going on...
I have a 24Volt solar panel trickle charging a 12volt Battery
My question is when the sun goes down and the solar panel isn't producing any power. Does the battery then try power the solar panel?
and if so is this bad for the solar panel?
if you have all the correct packages installed
and want to use emacs, vim, pico, nano, or whatever
emacs yourfilename.c (or cpp for c++)
it creates a file of "yourfilename" and opens it with emacs
then just code away and save it when you are done
then compile it (i think cygwin...
what the final project is going to be is a R/C cart to drive a high powered rocket to the launch pad (think NASA shuttle crawler but much smaller)
its just a fun project for a competition
i am looking to keep it as simple as possible, so as to not take too much time away from the actual...
it is a Denso motor DC 12volt 1.5 amp 160 rpm
with a gear casing on it
seems to be a worm attached to a helical gear
so the motor shaft is perpendicular to the motor casing
i picked it up from a science surplus store
i feel like its a windshield wiper motor...
yeah i thought about using...
on a smaller electric motor
the motor output shaft is cylindrical with a hex head insert
i am just directly attaching it to a small tire
is there a certain type of drive shaft that anyone could recommend
i thought about using an old allen wrench
but had nothing to hold the drive shaft into...