Re: Cinematronics Tailgunner Start Light

  In case anyone is interested, I finished my documentation on
installing the Tail Gunner Start Light
<http://games.rossiters.com/manuals/TailGunner/How%20to%20Install%20a%20START%20LED%20on%20Tail%20Gunner.pdf>
If there are any discrepancies or errors let me know.

Matt

On 4/14/2010 7:30 AM, Matthew Rossiter wrote:
> It stays high when no coin is inserted.
>
> On 4/14/2010 5:33 AM, Cinelabs Info wrote:
>> Matt, What is the state (high or low) of J3 pin 9, when there is no
>> coin inserted?
>>
>> On Tue, Apr 13, 2010 at 3:32 PM, Matthew Rossiter <matt@rossiters.com
>> <mailto:matt@rossiters.com>> wrote:
>>
>> If I take out the 2N3904 NPN transistor and put in a 2N3906 PNP
>> transistor - the start light works as I would expect (off when
>> there's no 'Press Start' message). The manual specifies a
>> typical *red* (mv50) led by the way. Just to give it that extra
>> cheezy space control panel effect.
>>
>> I guess the guys over at vectorbeam wanted that light to be on
>> solid the whole time. I wonder if Cinematronics was the deciding
>> factor for not including the light when they acquired Tailgunner
>> just to save a coupla bucks?
>>
>> Oh well, looks like I'll make a compromise and put in the pnp
>> transistor instead.
>>
>> Matt
>>
>>
>>
>>
>> On 4/13/2010 1:47 AM, Andrew Welburn wrote:
>>
>> Try wiring your LED the other way round, that'll give you the
>> inverse lit sequence.
>>
>> Cool hack tho, i love adding the bits that the designers
>> intended, but the manufacturing side didn't because of
>> cost-cuttinng/time saving.
>>
>> They probably designed it this way because all atari TTL
>> games of the 70's did this to indicate credits (as there was
>> no on-screen credit annunciation). If you don't want to
>> confuse your players, make your machine act like all the
>> others around you...
>>
>> I know TG has on-screen credit display, but maybe they coded
>> that in after the pcb design was done? or maybe they just
>> wanted to do both in order to blend in with the times...
>> after all, asteroids also does both...
>>
>> Andrew Welburn
>> www.andys-arcade.com <http://www.andys-arcade.com/>
>>
>> ----- Original Message ----- From: "Matthew Rossiter"
>> <matt@rossiters.com <mailto:matt@rossiters.com>>
>> To: <vectorlist@vectorlist.org
>> <mailto:vectorlist@vectorlist.org>>
>> Sent: Tuesday, April 13, 2010 3:41 AM
>> Subject: VECTOR: Cinematronics Tailgunner Start Light
>>
>>
>> Question#2: I don't think the inverter circuit is
>> working properly because the LED stays on solid and then
>> blinks when a coin is inserted. I would expect the led
>> to be *off* when no coin is inserted - then blink when
>> coin is inserted. Is that right?
>>
>> Thanks,
>>
>> Matt
>>
>>
>> ---------------------------------------------------------------------------
>>
>> ** Unsubscribe, subscribe, or view the archives at
>> http://www.vectorlist.org <http://www.vectorlist.org/>
>> ** Please direct other questions, comments, or problems to
>> chris@westnet.com <mailto:chris@westnet.com>
>>
>> ---------------------------------------------------------------------------
>> ** Unsubscribe, subscribe, or view the archives at
>> http://www.vectorlist.org <http://www.vectorlist.org/>
>> ** Please direct other questions, comments, or problems to
>> chris@westnet.com <mailto:chris@westnet.com>
>>
>>
> ---------------------------------------------------------------------------
> ** Unsubscribe, subscribe, or view the archives at
> http://www.vectorlist.org ** Please direct other questions, comments,
> or problems to chris@westnet.com

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Wed Sep 1 13:36:56 2010