Mechanics and Construction > Mechanics and Construction
Starting Out
Admin:
a microcontroller cant drive a relay either . . . so you would need a MOSFET between the relay and your microcontroller.
relays also have poor switching speeds, so should only be used for really high current stuff that you dont plan to PWM :P
i recommend just buying an H-bridge IC or motordriver . . .
annoyin_kid:
mate just get a servo and modify it. i played around with motors for a month and i got pissed off in the end and just ended up getting a servo and modifying it. also a servo uses only one pin on a micro controller and it can go foreward, backward and go slow and fast and it is easy to mount. an h bridge would use 2 pins and you need to use mosfets and transistors and all this other crap.
yettti:
after looking all this stuff I'm quite surprised to how much more there is two it thanks for all your help
ill probably use a bridge and buy it to run a motor as its cheaper than buying two servo`s
quincy_archer:
I am starting school and I am going to take Computer and Electronic Engineering technilogy. I woud like to know if after I graduate, I would have ebough experience to build a robot, and if not, what do I need.
Steve Joblin:
quincy... I graduated with a Business degree and work in the corporate world, yet I have learned to build a robot...
The three main diciplines are mechanical engineering, electical engineering, and programming.
For someone like myself, I am pretty handy and and mechanically oriented, so although I can't engineer bipedial walking gates (for example), I can figure out how how to mount a motor on a frame and compute how fast my robot will travel if I know the speed of my motor and the circumference of the wheels.
I stuck a few paper clips in an electrical outlet and learned the difference between volts, amps, and resistance pretty quickly (no, just kidding), but there are a million "tutorials" on electronics that one can find on the web (which I continue to find and study!)
I took a BASIC programming class in high school over 25 years ago, so although I still think that "java" is a cup of coffee, I can program Parallax Stamps and PICAXE micro controllers.
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