It was only a matter of time after the Arduino R4 boards were released that we would get some clone boards. In this article we will look at 2 of the Arduino R4 Wifi boards
Lets look at these boards with this image that I took of them side by side.
In case you do not know in the image above, from the left its the 2 clone boards then the official R4 Wifi board on the right. We will refer to these as boards 1 and 2
They have the same general spec as the official board, if you are unaware of what the R4 Wifi gives you, lets recap
|Arduino® UNO R4 WiFi
|Renesas RA4M1 (Arm® Cortex®-M4)
|Digital I/O Pins
|Analog input pins
|Yes 1 CAN Bus
|Circuit operating voltage
|5 V (ESP32-S3 is 3.3 V)
|Input voltage (VIN)
|DC Current per I/O Pin
|up to 240 MHz
|256 kB Flash, 32 kB RAM
|384 kB ROM, 512 kB SRAM
Now board 2 has extra headers which I do like on a board like this – very handy for connecting cables directly to the headers. There is the typical 2 pins for power and gnd and then one for I/O. All of the I/O is brought out to these headers as well as the standard Uno header setup.
I saw no issues with the IDE, both boards were recognized and assigned com ports on my Windows 10 system. I uploaded one of the LED matrix examples and compiled and programmed as expected.
|Price is £12.34
|ABout £15 although the price varies on Aliexpress
|official r4 Wifi board
|About 25 euros from the official store
Now some people do not want to use clone boards, that is fair enough but from a quality and pricing point they are a good option. Of course if you want to support Arduino and their great efforts with developing boards, the work with the development tools and documentation then purchase from them.