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.
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.
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 of industrial interface chips still use 5V, but it would be nice to also support 3.3V in some way for at least a few GPIO, e.g. a few level converters on-board. Still, looks like I2C will work at 3.3V according to the table below (unless Arduino has I2C resistors on-board, I don't know if Arduino boards do that or not; anyway it's not hard to desolder them, lets hope they are not 0201 silliness, if this is an industrial-targeted board).
One great thing with Renesas is the always almost OTT level of documentation, it's a 1400-page extremely detailed reference manual : )
I assume one of the things they strove for was backwards compatibility with all the shields out there, as well as existing projects. For a lot of people, the biggest "win" will be the memory increases opening up a lot more extended feature possibilities. It would have been useful to provide a 3.3V option though. The R3 Uno definitely didn't have on-board I2C resistors.
I assume one of the things they strove for was backwards compatibility with all the shields out there, as well as existing projects. For a lot of people, the biggest "win" will be the memory increases opening up a lot more extended feature possibilities. It would have been useful to provide a 3.3V option though. The R3 Uno definitely didn't have on-board I2C resistors.