Arduino UNO R4 WiFi LED Demo

element14 sent me an Arduino UNO R4 WiFi, which features a Renesas RA4M1 MCU. (Arm Cortex M4 48MHz).

This is a major upgrade over the original UNO. It is also a lot of fun to play with since it comes with a 12x8 LED matrix.

This is a quick demo of the LEDs in action...

Thank you element14 for this excellent MCU module.

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dougw over 2 years ago +7

I think I posted this in the wrong area - I can't edit it. I worked out the graphics with a spreadsheet that shows the graphic as you enter ones in cells and computes the 32 bit hex numbers for the program…
javagoza over 2 years ago +2

Great! You can also use the online LED matrix editor ledmatrix-editor.arduino.cc/
dougw over 2 years ago in reply to robogary +2

I didn't measure performance, although I had it scrolling so fast it was just a blur. This LED matrix is more capable than the micro:bit, the spacing also is tighter which makes the graphics more readable…

taifur over 2 years ago

Congratulation for getting the new cool Arduino UNO R4 WiFi and thank you for sharing this informative video.
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dougw over 2 years ago

I think I posted this in the wrong area - I can't edit it.

I worked out the graphics with a spreadsheet that shows the graphic as you enter ones in cells and computes the 32 bit hex numbers for the program...

It also shows how the bits and bytes map onto the LED array...
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javagoza over 2 years ago

Great! You can also use the online LED matrix editor

ledmatrix-editor.arduino.cc/
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rahulkhanna over 2 years ago

Arduino UNO R4 looks great. With a 32-bit RA4M1 MCU and a USB-C connector, this could be pretty handy for prototyping.
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robogary over 2 years ago

Nice Doug- the led matrix screen is an interesting add since that feature was previously unique to a MicroBit.

Using the led matrix really tied up MicroBit resources. Did you notice how much it tied up the Arduino R4 ?
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bidrohini over 2 years ago

Can anyone give me an idea about its price?
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cstanton over 2 years ago in reply to bidrohini

Yeah you can see how much it costs if you click here for our online stores and see Arduino®︎ Uno R4 WiFi for more detail.
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dougw over 2 years ago in reply to javagoza

Yes, the online tool can create binary data in a .mpj file but rather than take an extra step to extract what I wanted, I just did it all in one spreadsheet.
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cstanton over 2 years ago in reply to dougw

dougw said:
I think I posted this in the wrong area - I can't edit it.

I haven't checked if members can move their posts, but I've moved it for you.
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genebren over 2 years ago

Thanks for sharing! I am expecting my package to arrive today and I look forward to checking this out. I am pretty excited to learn more about the 32-bit RA4M1 MCU, as this might be a great processor for some of my more demanding applications.
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