RT-Thread, a powerful multitasking tool optimized for Arduino. You are able to issue shell (FinSH) commands to control your hardware now!

Do you need to have exFAT support? Use long filename? Open multiple files? Or read files with non-English characters? Then check this out!

See how much battery you have left!

Build a simple MQTT message board with Arduino Ethernet.

How to make a simple remote display system with an OLED display and Arduino Ethernet. You can absolutely send your messages via mobile app.

Control RGB LED with a slider in simple mobile app. Uses a very, very simple message with TCP connection between Arduino and mobile app.

Read temperature and humidity values in a remote location and store the data in an SD card.

Improved serial debugging, with debug levels and simple software debugger, to see/change global variables, add watch, or call a function.

Discover how to make an I2S Theremin based on the new Arduino I2S library.

How to use the new Arduino SDU library for SAMD boards to update the sketch on your board, putting it on an SD!

Simple enclosure and breadboard to mount Arduino MKR boards in a cabinet for prototyping.