Arduino Uno R4 Coming in May with 32-Bit CPU, 16x RAM and USB-C
One of the vital standard microcontroller boards round, the Arduino Uno was launched in 2010 and the Uno R3 (revision 3) has been the usual for over a decade. So yesterday, as a part of it, was large information. Arduino Day live stream (opens in new tab)The corporate has introduced the Arduino Uno R4 board, which is able to ship large leaps ahead in processing energy, RAM, storage and connectivity.
The Arduino Uno R4, which is able to launch in Could for an as but undisclosed worth, will likely be obtainable in each “Minima” (common) and Wi-Fi variations. The wi-fi model can have an Espressif S3 module that helps each Wi-Fi and Bluetooth connectivity.
The Uno R4 will retain the identical pin format and format as its predecessor, however will likely be upgraded to a 32-bit, Renesas RA4M1 CPU working at 48 MHz. This can be a large improve from the 8-bit, 16-MHz ATmega328P processor within the earlier Unos. The brand new chip is predicated on the Arm Cortex M4 structure, in contrast to the AVR RISC-based platform on the earlier processor. Arduino says most present software program libraries ought to run with none modifications, however a number of which are optimized for AVR might have tweaking.
The Uno R4 can have 32K SRAM, which is 16 instances greater than the 2K within the Uno R3. It is going to even have 256K onboard NAND versus 32K on the R3. Older fashions have a USB-C port for connecting a PC as a substitute of the cumbersome USB Sort-B port. The cylindrical energy connector stays in place however can now deal with as much as 24V as a substitute of 20V. A 12-bit analog DAC, CAN bus, and SPI port are additionally current on the board.
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| Header Cell – Column 0 | Uno R4 | Uno R3 |
|---|---|---|
| Processor | Renesas RA4M1 (48 MHz, Arm Cortex M4) | ATmega328P (16MHz, AVR) |
| SRAM | 32 thousand | 2K |
| Flash Storage | 256 thousand | 32 thousand |
| USB | Sort C | Sort B |
| Most Voltage | 24V | 20V |
Within the official photograph of the Uno R4 (proven initially of this text), Arduino has positioned yellow and inexperienced containers on some components of the PCB. The corporate stated in its submit that it maintains a component of shock and will not reveal what’s underneath the containers till we get nearer to launch.
If you wish to be one of many first to purchase the Uno R4, you may enroll. waiting list (opens in new tab) The board will warn you when it goes on sale. there may be additionally one early adopter program (opens in new tab) for builders writing standard libraries. In the event you’re accepted into this system, the corporate will ship you a free Uno R4.
Whereas we do not know the way a lot the Uno R4 will value, it appears protected to imagine that the Minima model will value $25 or extra, as that is what the Uno R3 prices as we speak. Uno R4 WiFi will clearly be costlier.
The brand new Uno R4 needs to be a boon for makers at present constructing robots or iOT units with Arduino. Whereas offering significantly better efficiency, will probably be appropriate with an enormous ecosystem of shields and different equipment.
Nevertheless, the Uno R4 faces fierce competitors from boards primarily based on the Raspberry Pi’s RP2040 chip. The RP2040 runs at a beneficiant 133MHz (about 3x the Uno R4) with twin cores and 256K SRAM. There are many motherboards with the RP2040, however the first-party Raspberry Pi Pico goes for simply $4 for the bottom mannequin or $6 with Wi-Fi/Bluetooth.
However, the Uno R4 can deal with far more energy than an RP2040 board, as the facility connector solely helps as much as 24V as a substitute of 5V on the Raspberry Pi’s platform. We’ve an in depth comparability of the Raspberry Pi Pico and the earlier era Arduino, which we are going to replace as quickly as we get the R4 in our palms.
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