Nano version of the UNO R4 ?

Hardware UNO R4 UNO R4 Minima
1

Hello,
Is there a nano version of the Uno R4 minima planned ?
I mean a nano with the same renesas microcontroller.
Thank you inadvance for your reply,
best regards,

2

I think the nano is just a form factor now, not a "mini" Uno anymore.
There is plenty of "powerful" nanos now, such as Nano ESP32.

3

There is a microcontroller in a pretty small formfactor that outperfoms them all

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This is the Teensy 4.1. Which has already an SD-Card-slot on board
PJRC provides very good arduino support and has ported many libraries for use with the Teensy 4.1

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best regards Stefan

1 Like
4

I have no insight into what might be planned. However, I think it an interesting idea.

Probably not an identical chip to the Uno, since the 64 pin chip is physically difficult in a small package. You could make the module wider, or use a 48/40 pin variant.

I might design one just for fun. I created a module based on an XMC1400 (Cortex M0) to fit on a 40 way module which is somewhat pin compatible with a 40 pin AVR, but I didn't use Arduino ecosystem to program it.

Are there any particular requirements you have for a hypothetical "nano R4", or is just to have something software compatible in a smaller form factor?

5

I think nano R4 would be an interesting device as well.

I have an Uno R4 and plan to develop some simple system with it. If I get it to work, the next step is to integrate it to a smaller PCB. That design would benefit from using a smaller variant of the Renesas MCU. I studied and compared pin-outs between 64 and 48 pin versions and nothing really important seems to be missing from the 48-pin one.

I wonder if there's anything in the Arduino code that would cause incompatibility to that variant? All memory sizes and registers are unchanged.