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Yet another servo hacking question


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Big AL
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Joined: 16 Oct 2004
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Yet another servo hacking question

could i grab a normal servo and hack it to be a 12v electronic switch?

Aim is to make servo a micro switch at 12v so i dont have to use a horn to make a weapon switch

Has anyone tried and succeced?
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Post Sun Jun 26, 2005 12:08 am 
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ffej
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Seems like im constantly answering the same question . . .

http://www.robowars.org/forum/album_pic.php?pic_id=148
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Post Sun Jun 26, 2005 12:39 am 
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Big AL
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Very Happy
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Post Sun Jun 26, 2005 4:36 pm 
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dyrodium
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On this topic: Is there a way to hack a servo circuit board to control a drive motor? (kinda like servo hacking for continuous rotation, but for another motor). Thanks! Smile
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Post Sun Jul 03, 2005 9:52 pm 
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ffej
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How big's your motor ? If it draws less than an amp you can just pull the servo guts out and use them. If it draws more than an amp however, you need to use an h bridge of transistors or relays hooked up to the servo, I did this on the original Catalyst and Singularity before I had the money to buy the RS80D. Ill draw a schematic when I get time if you need it .
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Post Sun Jul 03, 2005 11:19 pm 
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dyrodium
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Well, its for a beetle, so i'm assuming they draw less than 1a. Actualy, using relays and servo guts may be a nice alternative to microswitching (which constantly need adjusting). A scemetic would be nice thanks! Smile
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Post Mon Jul 04, 2005 12:11 am 
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Woody



Joined: 07 Oct 2004
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http://www.teamkiss.com/antweight.html

scroll to the bottom of the page for a cheap Futaba servo mod for increased voltage.

Post Wed Jul 06, 2005 9:25 pm 
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ffej
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I was bored . . .

http://ffej.ath.cx/bang_bang_speedo.JPG
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Post Fri Jul 08, 2005 12:40 am 
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Knightrous
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Nice diagram Jeff Smile But I think it's way to complicated for the newbie. Also, why use 4 relays when you can just make a simple H-bridge with two SPDT relays? Using two SPDT relays prevents any shorts and gives breaking as well.

I've made a modification to your diagram to show how the SPDT relays can be used. This is less bulky then the 4 relay version and if you weld a relay and you switch the polarity, all it will do is activate breaking and will not direct short the battery.

Modified Diagram here: http://www.robowars.org/forum/album_pic.php?pic_id=916

I hope this helps.
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Post Fri Jul 08, 2005 1:05 pm 
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ffej
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Yeah, that works too Very Happy

I didnt even think of that, lol.
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Post Fri Jul 08, 2005 1:52 pm 
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Big AL
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it would be so nice if i could understand the diagrams Embarassed .
awell i guess i be told to google it.
i love some help understanding them.
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Post Fri Jul 08, 2005 3:03 pm 
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Knightrous
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It's okay Al, we have all been at the "I don't understand that garble" stage Razz

I'll draw up a simple diagram later tonight for you.
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Post Fri Jul 08, 2005 5:21 pm 
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Big AL
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thanks
any sites that might teach me how to read them would be good too.
They might be added to the ultimate guide section so newbies (like me) don't have to ask stupid question and clog up the forums
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best quote ever:: "Those Gas-Turbine style warehouse heaters arent illegal, and neither is remote controlling one as far as I know."

Post Fri Jul 08, 2005 9:23 pm 
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dyrodium
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and me lol Smile
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Post Fri Jul 08, 2005 9:31 pm 
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Spockie-Tech
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5 seconds of google searching for the terms

basic electronics circuit diagram symbols

turns up this

http://www.google.com/search?hl=en&lr=&c2coff=1&q=basic+electronics+circuit+diagram+symbols&btnG=Search

a heap of links helping explain all those squiggly bits..

this one looks good

http://www.makingthings.com/products/documentation/teleo_user_guide/electronics.html

Think of them like a road-map.. although they dont necessarily show a "physical" layout as the components are actually arranged on the circuit board, they do show what the path "looks like" to an electron.

Any specific questions (other than "I dont understand all that, please explain" - which can be roughly translated as "please condense about 2-5 years of electronics courses into something I can read and understand in 30 seconds with no effort") will be happily answered. Wink
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Post Sat Jul 09, 2005 1:46 am 
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