But for those who fancy experimenting with the format it’s still possible to make a basic card reader using LEDs and light sensors, as [Nino Ivanov] has done using an Arduino Uno as the brains.

The reason is that SD cards operate around 3v3, but Arduino Uno GPIO pins are excited to 5v. However, these modules are still relevant because some other dev boards operate their GPIO pins with 3v3, ...

Last year, after 13 years of Arduino Uno’s release, they released the all new Arduino Uno R4 with more powerful hardware. Even though the Uno R4 is hardware compatible with the original Uno, people ...

Previously we have done a comprehensive comparison between the Arduino Uno R3 and Arduino Uno R4 with the main focus on the hardware specifications and features of each board. In this article, we will ...

Both the Arduino Nano and Uno can be powered via their integrated USB connectors. This automatically supplies regulated 5V power to the board, allowing you to use any USB-supported power source ...

Arduino has announced the new UNO R4 board family for prototyping and learning. The new models feature a faster microcontroller, a USB-C connector, improved power, Wi-Fi and Bluetooth LE, and more.

The Arduino UNO R4 Minima and the Arduino UNO R4 WiFi. But apart from the obvious wireless connectivity hinted by the name what other differences do the microcontrollers have.

Arduino UNO R4 WiFi. Arduino UNO R4 specifications: Microcontroller – Renesas RA4M1 Arm Cortex-M4F MCU @ 48 MHz with 32KB SRAM, 256KB flash; Wireless (Arduino UNO R4 WiFi only) – ESP32-S3-MINI-1 ...

The Arduino UNO R4 boasts a 3x performance increase over the UNO R3 and , in addition, SRAM has been upgraded from 2kB to 32kB, and flash memory from 32kB to 256kB to support more complex projects.