SparkFun 10-21-11 Product Showcase

[timbobel]

No wonder this guy does the product posts. I knew what he was talking about, but he makes it sound so simple! +1.

[TT1TTOne]

When would you have a use of the 2 other cables on 6-wired stepper motors?

[Lokivoid]

You can always add a shaftmounted encoder to a stepper, and solve that whole "no feedback" problem.

[mayasgranddy]

Great post. New stuff is always interesting but I learned so much more in this video. Thanks for being longer and more detailed.

[DanFrederiksen]

it's ounce inch, not ounce per inch. and it should be metric. not archaic units.

you may also want to carry real servo motors which is what is used for serious stuff. RC servos are not really precision

[silverstream314]

Great video! I would really appreciate more of these tutorial type showcases.

[GENERALCHAOS13]

hey i went bank i cant think what ic chip i can use for lpc1114 to control a 12 led pin 1 vin pin 5 ground (well 2 ground pin is grounded to 3 leds and 3pin grounded to 2 led ) im split them so i can control singly so il have 12 leds to control

[GENERALCHAOS13]

@GENERALCHAOS13 BLANK** typo XD see

[GENERALCHAOS13]

AWW i wanted to pet a baby cow XD but good vid 

[iHeartMagic]

how does the optical encoder tell if you're going backwards instead of forward. meaning if you're spinning one way but then change to go the opposite. ever since I've taken apart an old ball mouse I've wondered about this. high fives for anyone who answers.

[flaks31415]

@iHeartMagic Usually quadrature encoders are used, which have two optical sensors at different locations. What this means is that when it turns in direction 1 it will output 00, 01, 11, 10, 00, ... while in direction 2 it will output 00, 10, 11, 01, 00, ...

[devers6]

While it was interesting to watch and useful for demonstration, you should be aware that removing the rotor from a stepper motor permanently affects the magnetization of the rotor, and the motor is irreparably weakened. You should warn your viewers that they should never disassemble their own steppers for any reason, and I suggest you don't try to sell the motor you took apart.

[surfingump]

Awesome video!

*can't wait for the petting zoo and/or house plant showcase o_O

[Clatapist]

0 people are... what what? 0 dislikes, 36 likes.

[joebro391]

best product showcase ever!!!!!!

[chayakaldatan]

You failed to mention that you can use an optical encoder with a stepper motor to provide feedback.

[cowanrg9]

@chayakaldatan I thought I mentioned that briefly, maybe not. but yes, you can add any kind of feedback to ANY motor to make it more precise.

[bswain9999]

excellent

[wildcard1980]

great product post this week!

[TheUrdyggradsil]

This is the best Sparkfun video I've seen. I really useful introduction for people new to stepper, servo and controlled DC motors.

[kirbybot]

It's not 'ounce per inch', it's 'ounce inch' because it is a measure of torque

[cowanrg9]

@kirbybot - yep, people have already brought it to my attention ;-)

[Srbinarodnajstariji]

Every Product Showcase should be done like this.

[FreakyLemon51]

5th comment !!!

lol

[rakes150]

thanks a lot for the informative video you made. kindly make videos like these.

[RanHam335]

great video, keep them coming

[Fearlessthinker]

How about some linear actuators? Those would be useful. Good job and have a great open house.

[graymalkin1234]

Like this format for new product posts, it's really informative :)