Arduino Uno R4 WiFi (offre groupée)

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This book is really good on learning the Arduino from first basics, particularity if you have or are prepared to acquire the “Arduino Uno Experimenting (SKU20339) Kit” from Elektor.

However there is precious little on the additional features of the R4 WiFi board. It does cover the LED matrix well. However the is only one example on using theWiFi using the UDP protocol. There is no other example for the WiFi. There is nothing material on the subject of Bluetooth, which not the book’s fault since the on-board software requires a firmware upgrade and further library development.

There is a short discussion on simulators. I would have liked a discussion of emulation through the SWD/JTAG port.

There is a glaring typo on page 50, example 15. The formula for the solution of a quadratic equation is wrong. The term under the square root sign reads “-4a”. It should read “-4ac”. The software algorithm is fine, though.

If you really want to get to grips with the WiFi/Bluetooth aspects of the Arduino R4 Wifi, you would do better to look elsewhere. If you want to learn Arduino, this is a great book.

Weighing in at approximately 0.6 kg and comprising 326 pages, this book is quite a hefty tome.
But let's get to the content: the first 200 g are dedicated to installing the IDE and the usual LED experiments.
After that, the author devotes a page to the UNO-R4's timers, and soon after, the 14-bit ADC is briefly mentioned.
Section 9.6 covers the internal RTC and how to trigger IRQs with it.
The last 70 pages focus specifically on the UNO-4 Wi-Fi, with about 11 pages dedicated to topics such as UDP, TCP, and Bluetooth.
Almost all the described projects involving sensors and actuators can be carried out with a UNO-R3 and contain very little R4-specific information.
The book is certainly helpful for beginners, but those wanting to delve into the diverse capabilities of the Renesas processor will find it insufficient.