Chapter 3: Arduino IDE, Fritzing and KiCad

Section 3.1: Arduino UNO R4 WiFi

Without shorting the download pin and GND on Arduino UNO R4 WiFi,

Subsection 3.1.1 lsusb

lsusb will detect Arduino UNO R4 WiFi as:

➜  lsusb
......
Bus 011 Device 043: ID 2341:1002 Arduino SA UNO WiFi R4 CMSIS-DAP
......

Subsection 3.1.2 Arduino IDE

From within Arduino IDE, Arduino UNO R4 WiFi is now detected as Arduino UNO R4 WiFi.

In addition, please have the following 2 boards packages installed.

• Arduino AVR Boards
• Arduino UNO R4 Boards

Section 3.2: ESP32S3 Dev Module

By shorting the download pin and GND on Arduino UNO R4 WiFi as (Cited from official Arduino tutorial UNO R4 WiFi Custom Firmware Upload to ESP32 (Advanced)):

Subsection 3.2.1 lsusb

lsusb will detect Arduino UNO R4 WiFi as:

➜  lsusb
......
Bus 011 Device 044: ID 303a:1001 Espressif USB JTAG/serial debug unit
......

Subsection 3.2.2 Arduino IDE

From within Arduino IDE, Arduino UNO R4 WiFi is now detected as ESP32S3 Dev Module.

In addition, please have the following 2 boards packages installed.

• Arduino ESP32 Boards
• esp32

Section 3.3: Fritzing vs. KiCad

As of today, December 22, 2023,

Section 3.3.1: Fritzing

has NO official support for Arduino UNO R4, but a community support in its forum issue 20145. The following picture from within Fritzing IDE demonstrates its feasibility.

Section 3.3.2: KiCad

A third-party open source arduino-kicad-library provides a decent support for Arduino UNO R4 as KiCad's plugin.