Arduino UNO R4 coming shortly

Saw this today: Arduino UNO r4 on the official site.

Renesas processor, 32-bit, 256MB ram CAN bus and more. Should really open up new projects and give the Mega a run for its money. Actually makes you wonder what they might do with that one now.

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scottiebabe over 1 year ago +7

Neat. What's also great to see is they are continuing to invest in the arduino library catalog
Gough Lui over 1 year ago +3

Hmm. An interesting development indeed. Still 5V, but the loss of AVR doesn't feel like Uno to me ... But perhaps a good move overall ... I wonder how it stacks up to the SAMD-family that has been running…
shabaz over 1 year ago +3

Looks good! I might actually want to finally use an Uno! However this could be a bit of a pain, unless VCC can be changed to 3.3V, otherwise level shifters will be needed with 3.3V logic. Granted lots…

wolfgangfriedrich over 1 year ago

Now this is going to be interesting.

What is hidden behind the yellow box and what will be the price?

Fun fact: there is already a UNO R4 plus on the market, but it is just a knock-off 8 bit micro with clever marketing.
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shabaz over 1 year ago in reply to Gough Lui

It would probably be a pleasure using that chip with direct register access, with the detailed documentation with plentiful diagrams etc throughout. Actually, since the part is available in easy-to-solder packages too (QFP and there's a 0.5 mm pitch QFN option too), it would also be often convenient to just directly use the chip without the Uno. Just saw there's a reasonable-price RA4M1 dev-board for one of the 100-pin QFP variants. I'm thinking it could be worth getting that, just to try out the device. It would be nice to try the analog functionality that BigG spotted.

Also it's a nice part for upgradeability in the field, since it has serial and USB bootloader.
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baldengineer over 1 year ago in reply to wolfgangfriedrich

I am not certain it is hiding anything. The colored rectangles could be decoration.

I did find it interesting that Massimo and Fabio (CEO) were at the Arduino Day event in Chicago, where they announced it via live stream. Yet, they did not have one with them.
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RobinBot over 1 year ago

The CAN Bus is interesting. Would it be possible to build a smart parking guidance system for a multi-storey carpark with over 700 Ultrasonic Sensors and Light indicators?

I'm hoping that someone will build a project that massive with just the R4 Unos.
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Workshopshed over 1 year ago

The Uno is my go-to board for prototyping. Although have been using more SAMD boards. This one definitely looks like an interesting alternative and the Renesas processor worthy of investigation.
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wolfgangfriedrich over 1 year ago in reply to baldengineer

The answer is chip shortage as always. They don't know yet, if they can buy the processor in BGA-400 or SOIC-8.
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JWx over 1 year ago in reply to wolfgangfriedrich

Pin variation is because they can extend product's life based on "number of remaining pins/number of socket insertions" graph as in famous Signetics Write-only-memory datasheet?

web.archive.org/.../datasheet.pdf
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colporteur over 1 year ago

https://techexplorations.com/blog/arduino/arduino-uno-r4/?utm_source=newsletter&utm_medium=email&utm_campaign=mar31&utm_term=link

An update I get from a tech resource.
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