This is Coco, a bedtime indicator for children.
It's an Open Source piece of software running on an Open Source piece of hardware, namely the Arduino UNO R4 WiFi.
The combination of both hardware and software makes a device designed to help children sleep when it's time to; and also don't get up too early 😄
coco_wink.mp4
On your side, you can replicate the device and use it freely, as soon as you have an Arduino UNO R4 WiFi board programmed with the "Coco" software.
- Buy an Arduino UNO R4 WiFi, if you don't have one yet. Please buy a genuine one, if you can afford.
- Get the Arduino IDE software or run it from the Cloud.
- Download the source code from GitHub, or
git clone
the project. - Open the main project file into the Arduino IDE, compile and run the program on your board.
If you are a developer and want to add your contribution to the project, feel free to fork the repository, commit your changes and submit a pull-request. You are encouraged to read the GitHub fork guide before doing so.
If you found a bug or want to suggest a new feature, please log it from the "Issues" tab. You are encouraged to read the GitHub Issues quick start guide before doing so.
This work is licensed under the MIT License. Copyright (c) 2025 Justin MASSIOT
It means you can do almost anything with the software, provided that you preserve the copyright and license notices.
Please read the license notice for details.
When I asked my 4-year-old son for a name, he immediately answered "Coco". As simple as this!