The Talking Clock 2 (Bilingual) is the new version of Talking Clock I have published some time ago.

The code was updated to support two languages (English/Portuguese) and new features were introduced into the code:

Mode 1: Set the time (hour & minute)
Mode 2: The clock talks every minute
Mode 3: The clock talks every hour
Mode 4: The clock speaks the time when a button is pressed
Mode 5: Set the language for English or Portuguese

Note: The language status is stored in Arduino - EEPROM to keep this information even when it is restarted or turned on.

It was introduced as optional a mini amplifier PAM8403 (3W + 3W) for better control of the sound level in the speaker.

I am using only one speaker (one sound channel), but you can add another if you want.

Step 1: Components

Arduino UNO R3
DFPlayer Mini MP3 Player
Display TM1637
PAM8403 - Mini Audio Aplifier (3W+3W) - This is optional
SD mini - Memory Card
Pushbutton Switch
Resistor 1k Ohm
Speaker 3W
Breadboard
Jumpers

Note: Details of DFPlayer Mini on:

https://www.dfrobot.com/wiki/index.php/DFPlayer_Mi...

Step 2: Schematics

Important: It is not recommended to use the USB port as a power source in this project. Connect the Arduino to an external power source of 9V x 1A (or higher) because there are power surges when the speaker is working, causing Arduino instability.

Talking Clock 2 - Schematics - V2_bb.pdf
Download

Step 3: The Code & MP3 Files

A SD card must be formatted for FAT32 and a folder named "MP3" must be created.

In MP3 folder are stored all files of voices (74 in total) in English and Portuguese.

In mode 3, when the clock speaks every hour, there is a "church bell" sound that only works between 08:00 and 18:00. This sound is repeated as many times as the hour of that moment.

Note: All files must be named according to pattern "nnnn.mp3", starting in "0000.mp3".