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della Verità with voice and red eyes
a toy that it was developed for my daughter's anniversary gymkhana.
two devices. The first one was a box, with an RFID reader, that provided clues
on its LCD screen and had a secret compartment that opened with a specific
The second device was this Bocca della Verità with RFID in the
mouth (it was a secret) provides a different clue with each RFID.
This is the link in YouTube about how it works: https://youtu.be/Nd6taGteSHY
turn on its red eyes and play a sound file when a RFID is introduced in his
First to print the model. There is a specific part for RFID
and SD card reader fixed with screws.
Make holes (eyes, mouth and speakers)
Include components, according to images.
Connections according to electronic diagram.
The device program is a bocca.ino file and you can modify
it with your RFIDs and your voice records stored on the SD card.
Different voice / music files are played with each RFID. The
sound file is WAV PCM 8bits 48Khz.
It has been tested on 8Gb and 16Gb SD cards and works fine.
However, on an old 16Mb card, the result was not correct.
bocca.ino file you MUST:
Include your RFIDs
Change WAV files
Specify seconds of each WAV file
Duplicate code for more than 3 RFID's
on March 16, 2021