Introducing the Arduino UNO R4 Minima & WiFi

The powerful #Arduino #UNO #R4 is the newest member of the iconic Arduino UNO family. It even comes in two versions, so, let's take a look at the UNO R4 #Minima and WiFi.

The two new Arduino UNO R4 boards feature a microcontroller from Renesas, the RA4M1. This 32-bit ARM Cortex-M4 runs at 48 MHz and has 32 KB of RAM and 256 KB of flash memory. This controller can be powered from 5 V whereas most other ARM-based microcontrollers require 3.3 V. This makes the MCU a suitable candidate for enhancing the 5-V, 8-bit AVR-based family of which the Arduino UNO R3 is a famous member.

The UNO R4 Minima board is of a similar design complexity as the R3. To this the UNO R4 WiFi adds an 8-by-12 LED matrix and an ESP32-S3-MINI-1 module. There is also a Qwiic connector and a pin header to power the real-time clock.

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Content

0:00 Intro
0:21 About the microcontroller R(7F)A4M1 from @RenesasPresents
1:00 @Arduino UNO R4 Minima vs. UNO R4 WiFi vs. UNO R3
2:04 Pinout Arduino UNO R4
2:28 Analog features of UNO R4
3:05 NEW FEATURES UNO R4 - SWD interface & @EspressifSystems ESP32-S3 onboard
3:44 NEW FEATURES UNO R4 WiFi - 8-by-12 red LED Matrix, I²C Ports
4:24 UNO R4 Power Supply
4:45 FUN Fact of Arduino UNO R4
4:58 Summary of Arduino UNO R4 Minima and UNO R4 WiFi

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@ElektorTV

[fred.chapman]

@elektortv Clemens Valens, thank you for your excellent introduction to the new *Uno R4 Minima* and *Uno R4 WiFi* boards! Your succinct explanation of how R4 improves on R3 and how Minima and WiFi differ from each other is filled with valuable information. I'm very interested in electronic musical instruments, so the enhanced analog signal processing capabilities of the R4 are quite exciting to me. In addition, the R4 WiFi is supported by the *Arduino IoT Cloud* platform, which makes it easy to build wireless remote control panels and shared data dashboards. Great stuff all around!

[abdoun]

I think it would've been butter if they replace the LED matrix with OLED display .

[AkashBagFEce]

r4 is pretty good. but the popularity, the uno r3 get is just another level. the uno r3 & it's clone boards & the atmega328p chip will never be useless due to there simplicity & effortableity. i just loved uno r4, but r3 is a milestone...!!! love arduino...

[KennethScharf]

according to the processor spec sheet, it might be possible to overclock the R4 to 64mhz.

[Elektronik-]

The "auxiliary processor" Esp32-s3 has about 10 times the computing power of the RA4M1 CPU. Can this also be used with the Arduino ide?

[paulweston]

The main thing going against Arduino devices and their clones is that there are more powerful options available that are much cheaper, they still work with the Arduino IDE but can also be programmed using languages such as Micropython, Go and Rust. The 5V logic makes sense as it will work with existing accessories and is a simple project swap-out but other 3.3V boards are easy enough to adapt using logic shifters.

It's good to see Arduino evolve but one thing I like about the Uno R3 is that you can prototype on it and then just flash the 328 chip and dispense with the rest of the board.

[RixtronixLAB]

Cool and informative video shot, thanks for sharing it, keep it up :)

[diyfixtool]

Be logical when repairing! Great video!

[kbcxe]

I am a BIG fan of Arduino, but now I am the sad owner of some 12+ printer cables thanks to the new data cable change. Why????

[Cen_t]

bro please I can't find this anywhere... can the r4 be connected from the normal android charging cable?