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From: "flier" <FLIER-at-sbcglobal.net>
Subject: RE: 1/6th RC Stuart drive electronics figured out
Date: Tue, 13 Jan 2004 12:32:59 -0500
Reply-To: tanks-at-rctankcombat.com

Thanks Steve.  You know I searched on the base number 
but didn't put in the "PT".  Oh well.  The link keeps 
timing out right now but at least I know where to 
look now.  It'll really help having the spec on the 
device.

Regards,

Ted
--- Original Message ---
From: "Steve Tyng" <stevet-at-stcharlesmd.com>
To: "tanks-at-rctankcombat.com" <tanks-at-rctankcombat.com>
Subject: RE: 1/6th RC Stuart drive electronics 
figured out

>Ted,
>
>Here's the spec sheet for the chip in the Stuart.
>
>http://www.pti.com.cn/ptipdf/datasheet/PT8A990A-
991A.pdf
>
>Steve
>
>
>> -----Original Message-----
>> From: tanks-at-rctankcombat.com 
[mailto:tanks-at-rctankcombat.com]
>> Sent: Tuesday, January 13, 2004 10:27 AM
>> To: tanks-at-rctankcombat.com
>> Cc: stevet-at-stcharlesmd.com
>> Subject: Re: 1/6th RC Stuart drive electronics 
figured out
>>
>>
>> Sure Gents,
>>
>> I've posted what I found out on my site.  I
>> rearranged a little.  More to come as I make 
progress.
>>
>> Joe Sommer has a nice PIC-based mixer which I think
>> will work perfectly and alleviate having to have 
any
>> servos or switches.  It may allow direct connection
>> of the onboard electronics right to a 6 channel RC
>> receiver.  I'm hopin' to con him into burning me a
>> couple so I can try it.  It'll be sweet if it works
>> and pretty easy to install.  We'll see...
>>
>> Regards,
>>
>> Ted
>>
>> --- Original Message ---
>> From: "Zach Ginter" <zgunbear01-at-comcast.net>
>> To: <tanks-at-rctankcombat.com>
>> Subject: Re: 1/6th RC Stuart drive electronics
>> figured out
>>
>> >I second that, very simple diagrams and directions
>> would be a great =
>> >assitance to me as well.=20
>> >  ----- Original Message -----=20
>> >  From: SUSAN GUTBRODT=20
>> >  To: tanks-at-rctankcombat.com=20
>> >  Sent: Monday, January 12, 2004 10:04 PM
>> >  Subject: Re: 1/6th RC Stuart drive electronics
>> figured out
>> >
>> >
>> >  Ted,
>> >   For those of us who have Stuart's....Thanks for
>> getting busy with =
>> >them and showing a "slowpoke" what can be done...I
>> for one am ignorant =
>> >about the electronics but I can copy a system if
>> presented on a "low" =
>> >enough level...
>> >  Good Luck,
>> >  Kurt (I STILL haven't finished my backyard)
>> Gutbrodt
>> >  Lost Wages, NV
>> >    ----- Original Message -----=20
>> >    From: Flier=20
>> >    To: tanks-at-rctankcombat.com=20
>> >    Sent: Monday, January 12, 2004 6:59 PM
>> >    Subject: 1/6th RC Stuart drive electronics
>> figured out
>> >
>> >
>> >    FYI, spent an hour or so this evening and
>> figured out the Stuart =
>> >drive
>> >    electronics.  There's a 22 pin IC on the main
>> board labeled 8A991AP =
>> >that's
>> >    apparently an RF decoder.  I was able to probe
>> out the pins that =
>> >enable the
>> >    right forward, right backward, turret left,
>> turret right, MG & =
>> >cannon
>> >    'fire', etc., etc.  This'll save a lot of time
>> interfacing a =
>> >standard RC
>> >    system to the tank as all the drive 
electronics
>> can stay stock and =
>> >you still
>> >    get the sound effects.
>> >
>> >    Pull the pin(s) positive (high) and you get 
the
>> resulting movement =
>> >together
>> >    with sound effects.  It'll be pretty simple to
>> interface to
>> >    servos/microswitches.  I'm gonna play around
>> with some logic to see =
>> >if I can
>> >    figure out a joystick mixer.  If not I'll 
resort
>> to 4 small SPDT =
>> >relays and
>> >    a diode/relay mixer.  I might even 
incorporate a
>> little RC switch =
>> >circuit
>> >    and 555 timer to toggle the cannon 'fire' 
sound
>> and resulting brief =
>> >recoil
>> >    (drive motors kick back a little) AFTER the
>> paintball marker fires.
>> >
>> >    Anyway, ends up being pretty simple.  I'll 
post
>> out on my website =
>> >when it's
>> >    complete.
>> >
>> >    Regards,
>> >
>> >    Ted   www.foxflier.com
>> >
>>
>>
>>
>>
>>
>>
>