First Steps with the Arduino-UNO R3 and NANO | Maker, MakerED, Maker-Spaces, Coding | Valentine’s Day is around: GET creative with an LED Matrix and an Arduino!






Valentine’s Day is around: GET creative with an LED Matrix and an Arduino!

[Start Text Wikipedia] Valentine’s Day, also called Saint Valentine’s Day or the Feast of Saint Valentine,[2] is celebrated annually on February 14. Originating as a Western Christian feast day honoring one or two early saints named Valentinus, Valentine’s Day is recognized as a significant cultural, religious, and commercial celebration of romance and romantic love in many regions around the world. [End Text Wikipedia]

A tradition worldwide around is to give flowers to his loved one, so WHY NOT ALSO a small electronic device which shows a heart on a LED Matrix?!! It is NOT expensive and gives a certain “special” feeling to your loved one 😉 And ALSO, I give you the “ready code” to start it straight on. You don’t need to create the “Heart Character” before, BUT I will give you ALSO the link to the tutorial who explains very well the How-To!

Please check below the tutorials with the wiring and the code:


The wiring



Click image, please, to access its origin.


There are ONLY five (5) wires to connect and the code works with the ARDUINO UNO and the ARDUINO NANO.


How-To make custom characters

There is a software available to create custom character codes for the LED-Matrix, please check the tutorial below:


OR, use an online character-generator, see PIC below for example, please:




Doesn’t look that difficult, isn’t it?! 😉


Anyway, find below the ready to use code, please:

All you need now is to bring it into a box for a nicer presentation and to give it as a gift to your love!

Secret tip: Use as well a LCD with scrolling text, where you can program then a special personal text message for your love. Please check my tutorial below:

Keywords necessary for me to create this blog post: Arduino UNO R3, Arduino NANO, LCD 1602, I2C Bus, coding, learning to learn, learning by doing, LED Matrix, Valentine’s Day, Character Generator for LED Matrix,



L’auteur Gust MEES est Formateur andragogique / pédagogique TIC, membre du “Comité Conseil” de “Luxembourg Safer Internet” (LuSI), appelé maintenant BEESECURE, partenaire officiel (consultant) du Ministère de l’éducation au Luxembourg du projet  ”MySecureIT“, partenaire officiel du Ministère du Commerce au Luxembourg du projet ”CASES” (Cyberworld Awareness and Security Enhancement Structure). L’auteur était aussi gagnant d’un concours en électronique en 1979 ( Pays germaniques ) et voyait son projet publié dans le magazine électronique “ELO”.

The author Gust MEES is ICT Course Instructor, ”Member of the Advisory Board” from “Luxembourg Safer Internet” (LuSI), BEESECURE, Official Partner (Consultant) from the Ministry of Education in Luxembourg, project “MySecureIT“, Official Partner from the Ministry of Commerce in Luxembourg, project “CASES” (Cyberworld Awareness and Security Enhancement Structure).

The author was also a winner of an electronics contest (Germanic countries) in 1979 and got his project published in the “Electronics Magazine ELO”.


Stay tuned for next blog post(s) 😉







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