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[DPRG] toy H-bridge hacking

Subject: [DPRG] toy H-bridge hacking
From: Wade A Smith warm38 at juno.com
Date: Mon Aug 27 11:23:15 CDT 2007

Yep.  That helps.  I was actually thinking of a tutorial (I think Jim
Brown did it) on how to trace the H-bridge and find the inputs.  But, as
it turns out, I did OK even with my limited analog <shudder> knowledge
(see reply to Dave Grubb).

Looks like I need to ramp up the micro development.  Next week.  This one
is filled up Wed-Sat. so mad scientist playtime starts Sept 3!


On Mon, 27 Aug 2007 00:29:46 -0500 "David Peterson" <robodave1 at tx.rr.com>
Hey Wade,

Bob Jordan had a tutorial on the SRS Encoder about hacking a toys
h-bridges, check it out here :


----- Original Message ----- 
From: Wade A Smith 
To: DPRGlist at dprg.org 
Sent: Sunday, August 26, 2007 3:10 PM
Subject: [DPRG] toy H-bridge hacking

Once upon a time I seem to recall a "how to" article to connect a
microcontroller to a toy's H-bridge.    Does anyone recall that or is
that a case-by-case only activity requiring a mentor of the EE
persuasion.   I'm a software guy  with enough digital electrical
knowledge to be a danger to myself and anyone else near my experiments.  
So as soon as you talk analog stuff (capacitors and transistors) I am
quickly out of it.  I can recognize them.  I can read a datasheet (I look
at the pictures to know which pin is which).  And I can sorta trace the
lines on a PCB, but do NOT ask me to generate a schematic. (it usually
looks like the PCB, so why go thru the trouble?)

I have a few moving toys with H-bridges and I would like to connect up to
them and control them with various microprocessors and sensors.

Any guru EE types out there?  Or can you suggest a place to go  (URL, not
The Hot Place)?

wade, former DPRG member living in exile in Florida
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