Sound Pack Fire signal

[Sean Cleary]

Hi all I want to take advantage of the fire signal that comes out of the turret control wiring.

1. Does anyone know what the signal is? +5v or is it a PWM.
2. Is it automatically part of the Audio Pack or does a switch need to be thrown internally?

I'm away from my tank but writing code for a Raspberry Pico

Thanks for any advice.

[Adrian Harris]

What do you mean by the "fire signal" ?

The Benedini Sound Card outputs two signals, one for the main gun and one for a machine gun. They are active low.

Which Audio Module do you have ?

Adrian.

[Sean Cleary]

I have a late Tiger 1 with a Benedini Sound unit. I am installing a Raspberry Pico to incorporate a recoil function and a paintball pistol for launching powder balls.

So the attached schematic that I found shows that the signal I was looking for was an option that I don't have, Channel (5). So now I'm going to have to count off channel 4 and trigger when the 4 pulses for the cannon are entered.

Have you seen others doing the same?

Thanks

[Sean Cleary]

O.K. Running this through my mind. So if I pass the channel 4 signal through the PICO ( before the sound card interface) and count the pulses I can steer Filter the 4 pulse signal to my logic and output pins, and signal the sound card to play the Boom! Reset when new pulses are input. That way anything could be controlled to coincide with the sound produced.

HMMM
Any thoughts?

[Adrian Harris]

That's a very old schematic, where the firing unit is the blank firer Phil Woollard has just posted about.

The Benedini already produces a logic signal when the main gun sound is used, so you would just need to look for this signal to go low and use that to trigger your system. On the TBS5 it's on the pins next to the sound output. On the TBS Mini it's the second to last pins at the opposite end to the audio output.

I've used both the counting pulses system in an MG splitter box and it's fairly simple to do, though you do have to cater for the speed at which the toggle switch is operated.

Adrian.

[Sean Cleary]

So if I understand you correctly: Output 6 on the sound card is High and goes Low on the fire command?
Sorry for the questions but I'm coding on a breadboard away from the model.

[Adrian Harris]

Yes. One will react to the MG sound and the other will be the main gun.

Adrian.