The word box allows you to record words and to play it again and again when moving the box from downside to upside (like a "Moo box").
The project is composed by multiple components :
- 1 Arduino card ESP8266 hosting a WiFi network with a web server
- 1 accelerometer MPU6050 to detect movements
- 1 amplifier PAM8403
- 1 speaker Dual Cone to broadcast the sound
https://github.com/RossignolVincent/ESGIWordBox.gitIf you don't have arduino
- download it here: https://www.arduino.cc/en/main/software
- If you use windows/OSx you will probably need drivers: https://www.wemos.cc/downloads
Start Arduino IDE
- Open the Preferences window
- In the Additional Board Manager URLs field, enter this URL : http://arduino.esp8266.com/versions/2.3.0/package_esp8266com_index.json
- Open
Tools->Board->Boards Manager... - Type
espand theesp8266platform will appear, install it - Select your board:
Tools->Board->Wemos D1 R2 & mini
The project uses the following libraries :
- spiffs for the file system
- mpu6050_tockn to manage the accelerometer
- wire to manage the connections between all the components
- esp8266 for the Arduino card
- Mozzi : We had difficulties to work with the Mozzi library and the ESP8266. We need more time to investigate this solution. Moreover, Mozzi isn't working well with WiFi.
- Audio file format : Mozilla is exporting audio files in .ogg and our library is reading .mp3 files. We need to find an ogg-mp3 converter.
- Browser : Chrome is blocking the microphone access if the website is not in HTTPS.
- ESP8266Audio : The library is working well only with some specific MP3 caracteristics. Otherwise, it works but the sound quality isn't good.
At the start, the Arduino card create a WiFi network :
- SSID : ThreeMenWithoutTeddy
- Password : Azerty1234
You will have to connect to this WiFi network and to go to the following address : 192.169.4.1
On the web server, you can record a sound. This sound will be played at each box movement.
