Alt-BEAM Archive
Message #04488
To: beam@sgiblab.sgi.com
From: James Anderson anderson@cfht.hawaii.edu
Date: Mon, 14 Jun 1999 13:58:59 -1000
Subject: [alt-beam] Re: MOTOR DRIVER QUESTION
SG wrote:
> ok, nobody answered my question so i'll ask it again.
>
> is there any preference on motor drivers?
> h-bridge, z-bridge, 74hct240 IC (miller's tutorial) ?
>
> h-bridge was kinda tricky, (ruined em on my 1st two trys) but i can master
> it if you guys think it's wrth the effort.
> local elec supply shop wants $1.40 each for their 2N3904 transistors
> thats over $10 for two h-bridges (four "04's" each h-bridge) and the IC
> only cost $1.20 at Rat Shack.
> sooo. anyone have luck with one more than the other?
> Soldering iron is waiting for some feedback b4 it gets pluged in.
> would appreciate any help
> -Sparky
I can't help with your main question, but should inform you that 2n3904
transistors are ~$0.16 @ through digikey (www.digikey.com), and I'd wager ICs
might be cheaper there too. Handling's free if you spend more than $25 bucks,
and the stuff usually arrives within 3-4 days.
What are you looking for re soldering iron feedback?
Wondering Aimlessly,
James
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