Getting Started With the New Arduino Uno WiFi Rev2
The Arduino Uno WiFi Rev2 is a new board launched by Arduino during the Maker Faire isn’t just a straight up replacement for the now venerable Arduino Uno. The current Uno is built around an 8-bit Microchip ATmega328P, while the latest is powered by an ATmega4809. The ATmega4809 is the first AVR device to feature Microchip’s Core Independent Peripherals (CIP), and having this on the Arduino is a perhaps a bigger deal than it appears on the surface.
This board comes loaded with 6KB of RAM and 48K Flash memory, alongside three hardware UARTS allowing communication with more than one RF module, and an integrated high-speed Analog-to-Digital Converter (ADC). The WiFi support has been added to the Uno using the same ESP32-based u-blox module, the NINA-W102, used by the new MKR WiFi 1010 announced on Arduino Day some time back.
The Arduino Uno WiFi also has a Microchip ATECC608A cryptographic co-processer providing hardware-based security, and hardware-based key storage, for connecting your projects to the cloud. This is the same crypto chip which is now part of most of the new IoT boards Arduino is developing for last few months.
This board has 14 digital input/output pins—5 can be used as PWM outputs—6 analog inputs, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller. There is not much changes in the pinout configuration and the form factor apart from the new microcontroller and wifi module.
Technical Specs of Arduino Uno Wifi
|Input Voltage (recommended)||7 – 12V|
|Digital I/O Pins||14 — 5 Provide PWM Output|
|PWM Digital I/O Pins||5|
|Analog Input Pins||6|
|DC Current per I/O Pin||20 mA|
|DC Current for 3.3V Pin||50 mA|
|Flash Memory||48 KB (ATMEGA4809)|
|SRAM||6,144 Bytes (ATMEGA4809)|
|EEPROM||256 Bytes (ATMEGA4809)|
|Clock Speed||16 MHz|
It’s possible that the new Uno WiFi will take its place as the ‘entry level’ board, and something like the current Arduino Zero — based around a 32-bit processor — will become the ‘other board.’ With the advent of new Arduino boards with better and smaller form factors like MKR, Micro, Nano, the new ‘classic’ Arduino Uno targeted directly at those wanting to prototype, and the newer MKR aimed at those trying to bridge the gap between prototype and product.
The Arduino Uno WiFi Rev 2 is available for purchase from the Arduino Store and priced at $44.90 USD.
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