Can this be done without using a relay? - 20 second recorder playback looping.

[jasonsguild]

I picked up a radio shack 20sec recording module with the idea of using it as a really lofi sampler for noisy background loops and such.  The problem is that the playback goes once and then stops until the playback trigger is reactivated.  This is done by connecting a specific trace to ground (the IC is covered in goop, I'm guessing this trace goes to an IC pin), and a latching switch doesn't cut the mustard like I thought it would.

I'm wondering if there's a sans relay (like a switching transistor or something) way of bringing the playback trace to ground once the speaker or a cap drops below a certain voltage (both go to about .8v when playback occurs and drop to zero when it's done) so that I can loop playback continuously?  I found some info on the PayBack looper, which shows a cd4093 used for this, but I don't think I can use that as this playback trace needs to reach near zero v to work. 

Any suggestions?

Thanks,

J

[armdnrdy]

It depends on which ISD series voice module IC you're working with. It seemed as if Windbond changed the inner workings of these chips as often as some of us change socks.

Some series have the capability built in and others need exterior components to accomplish looping.

[PRR]

You didn't say you ever want the repeats to stop....

[jasonsguild]

I just noticed your reply PRR, thanks!  For what I had in mind, I definitely want those repeats to keep on going