# Warning- Noob. Mirror activated sound module

#### Andy MacDonald

Joined Dec 11, 2019
11
Hi guys first post, happy to be here.

I am in the design phase of making a toy. I would like to know if it is possible to have pre recoded sound bytes played only when the toy looks in the mirror.

is this something that is achievable or is it very difficult.
Any help appreciated

Joined Jul 18, 2013
21,632
Use a infra red retro-reflector and the ISD820 board available on ebay for <$2.00 Max. Thread Starter #### Andy MacDonald Joined Dec 11, 2019 11 Use a infra red retro-reflector and the ISD820 board available on ebay for <$2.00
Max.
Thankyou for your reply. Are the two parts described just for the mirror sensor and side of the curcit.

any recommendationa for a decent sounding soundunit and other components I might need.
Thanks for any further help

Joined Jul 18, 2013
21,632
the ISD820 allows a recorded/replay message up to 20 secs.
If the audio out is not high enough, a LM386 could be used.
Max.

#### Andy MacDonald

Joined Dec 11, 2019
11
Thankyou so much for your time and help

#### AnalogKid

Joined Aug 1, 2013
8,697
Does it have to be a mirror, or can any close-up object trigger the playback?

ak

#### BobTPH

Joined Jun 5, 2013
2,589
I would use a TSOP IR sensor and an IR emitted modulated to activate it. Put them each at the end of a tube that would guarantee it would only see the reflection at a controlled angle. This would avoid false triggering you might get otherwise.

Bob