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Arduino Forum Relay Shield or Motor Driver Shield
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Relay Shield or Motor Driver Shield

Former Member
Former Member over 12 years ago

Okay - first, it should be clear that I am Arduino 'stupid'...like, dumber'n a bag of reta'h'ded kittens floating down a still-water river.

 

I am however, doing my best to understand the terminology and searching the 'net. Just, slightly - kinda, hoping that I can find a 'go to info guy/girl' before my google skills begin to fade.

 

That said...

 

I am looking to get what I need 'in hand' before I deal with learning the coding and stuff.

At face value, I 'understand' the blinky-light stuff which we're kinda supposed to start with. However, being tax season, I kinda only have the $$$ "right now" - and can't delay (pun - delay timer being the crux of this question, LOL) too much where getting what I'm going to need is concerned.

 

I am building a series of 'things that turn' in a given time-sequence, for a given time duration. They're all controlled by 'windhsield wiper' motors (12VDC). My present design consists of a bunch of relays, a few 555's, a couple batteries (12VDC - mAh, not important, apparently-cause I have a shmorgasbord) and a whole bunch of other sh...errr...stuff which I'm starting to realize I don't actually need. It should be noted that: I do have prototypes completed, I have gathered up some 'basics', have functioning versions of what I'm doing sitting right next to me - but the end-game goal for me is to have as few 'parts' possible, at a reasonable cost, with little time dedicated (baring the learning curve, which I accept) to do it again for other folks.

 

My question is pretty simple, but I can absolutely provide more info if needed: for the 'in brevity' information below, would the pro's recommend a relay shield or motor-driver shield?

 

At present, and in the simplest way I can describe - being terminology dumb: I got these motors; they have the power and torque I need; don't see being able to go to a servo or 'RC Car-type' motor). Right now, I press a button: audio plays, then the relay switches and the motor turns to a specific point (stopped by a roller-switch which kills the power). After a duration of time, relay goes click, the motor spins again - stopping at a known point because of the roller switch (i.e. I finagled a little doo-hickey on the spindle of the motor to whack the switch every 90 degrees of rotation).

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  • dragonstyne
    0 dragonstyne over 12 years ago

    Since speed control is not an issue, and position is controlled by an external switch, the relay shield would be appropriate.

    However, the relay contacts do have a current limit. So, you would use the relay shield to drive the higher current relays to operate the motors.

    Or build your own relay shield like interface with the correct relays for the project.

     

    Steve

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  • Former Member
    0 Former Member over 12 years ago in reply to dragonstyne

    Got it, thanks.

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  • Former Member
    0 Former Member over 12 years ago in reply to dragonstyne

    Got it, thanks.

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