Arduino Giga R1 WiFi: Specifications, Features and Applications[FAQs]
Arduino GIGA R1 WiFi
The Giga R1 WiFi represents a significant upgrade to the Arduino Mega platform, bringing high-performance 32-bit computing and wireless capabilities in the familiar Mega form factor.

Arduino GIGA WiFi - First Look
- Arduino Giga R1 WiFi Description
- Arduino Giga R1 WiFi Features
- Arduino Giga R1 WiFi Applications
- Arduino Giga R1 WiFi Pinout Diagram
- Arduino Giga R1 WiFi Alternatives
- Arduino Giga R1 WiFi Documentation
- Arduino Giga R1 WiFi Specifications
- Arduino Giga R1 vs. Arduino Nano 33 BLE
- Arduino Giga R1 WiFi Practice Tutorial
- Resources for the Arduino Giga R1 WiFi
- Arduino Giga R1 WiFi Datasheet
Arduino Giga R1 WiFi Description

The Giga R1 WiFi represents a significant upgrade to the Arduino Mega platform, bringing high-performance 32-bit computing and wireless capabilities in the familiar Mega form factor.
At the heart of the board lies the STM32H747XI dual-core microcontroller containing both a 480 MHz Cortex-M7 and 240 MHz Cortex-M4 processor, with sophisticated peripherals like floating point unit, DSP instructions, and memory protection. This enables advanced parallel processing for applications like machine learning at the edge.
Technical specifications of the STM32H747XI:
| Microcontroller | STM32H747XI |
| Cores | Arm Cortex-M7 and Cortex-M4 |
| Clock Speed | Cortex-M7: 480 MHz, Cortex-M4: 240 MHz |
| Flash Memory | 2 MB |
| RAM | 1 MB (including 192 Kbytes of TCM RAM, up to 864 Kbytes of user SRAM, and 4 Kbytes of backup SRAM) |
| Connectivity | High-speed embedded memories with a dual-bank flash memory |
| Peripherals | Three ADCs, two DACs, two ultra-low-power comparators, a low-power RTC, a high-resolution timer, 12 general-purpose 16-bit timers, two PWM timers for motor control, five low-power timers, a true random number generator (RNG). The devices support four digital filters for external sigma-delta modulators (DFSDM). They also feature standard and advanced communication interfaces. |
The board equips the STM32H7 with an ESP32-based WiFi 4 and Bluetooth 5 module, allowing wireless programming and connectivity. There is external antenna support along with ample memory including 2MB flash, 1MB RAM, and 8MB SDRAM. Dual USB ports are provided with both host and device roles.

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Arduino Giga R1 WiFi Features
Microcontroller: STM32H747XI with Cortex-M7 and M4 cores
WiFi: 802.11 b/g/n @ 65 Mbps with external antenna
Bluetooth: Version 5 with external antenna
76 digital I/O pins, 14 analog inputs, 2 DAC outputs
2 MB flash memory, 1 MB RAM, 8 MB SDRAM
USB host, USB-C peripheral, audio jack
Extensive communication peripherals: 4x UART, 3x I2C, 2x SPI, CAN
Arduino Giga R1 WiFi Applications
Advanced robotics, automation, and IoT projects
Signal processing, audio analysis, and synthesis
Machine learning inference at the edge
Battery-powered projects and remote sensor nodes
Complex data acquisition and control systems
Wireless control and monitoring with cloud connectivity
Arduino Giga R1 WiFi Pinout Diagram

Arduino Giga R1 WiFi Alternatives
NodeMCU ESP8266: It is an open-source firmware and development kit that helps you build IoT applications.
Wemos D1 Mini: It's a mini WiFi board based on ESP-8266EX.
SparkFun Thing - ESP8266: It's a breakout and development board for the ESP8266 WiFi SoC.
Adafruit HUZZAH ESP8266: It's a WiFi development board with an on-board antenna and CP2104 USB-TO-UART bridge.
Particle Photon: It's a tiny WiFi development board for creating connected projects and products.
Arduino Giga R1 WiFi Documentation
Arduino Giga R1 WiFi Specifications
| Board | Name | Arduino® GIGA R1 WiFi |
| SKU | ABX00063 | |
| Microcontroller | STM32H747XI dual Cortex®-M7+M4 32bit low power Arm® MCU (datasheet) | |
| Radio Module | Murata 1DX dual WiFi 802.11b/g/n 65 Mbps and Bluetooth® (datasheet) | |
| Secure Element | ATECC608A-MAHDA-T (datasheet) | |
| USB | USB-C® | Programming Port / HID |
| USB-A | Host (enable with PA_15) | |
| Pins | Digital I/O Pins | 76 |
| Analog input pins | 12 | |
| DAC | 2 (DAC0/DAC1) | |
| PWM pins | 12 | |
| Misc | VRT & OFF pin | |
| Communication | UART | Yes, 4x |
| I2C | Yes, 3x | |
| SPI | Yes, 2x | |
| CAN | Yes (Requires an external transceiver) | |
| Connectors | Camera | I2C + D54-D67 |
| Display | D1N, D0N, D1P, D0P, CKN, CKP + D68-D75 | |
| Audio Jack | DAC0, DAC1, A7 | |
| Power | Circuit operating voltage | 3.3V |
| Input voltage (VIN) | 6-24V | |
| DC Current per I/O Pin | 8 mA | |
| Clock Speed | Cortex® M7 | 480 MHz |
| Cortex® M4 | 240 MHz | |
| Memory | STM32H747XI | 2MB Flash, 1MB RAM |
| Dimensions | Width | 53 mm |
| Length | 101 mm | |
Arduino Giga R1 vs. Arduino Nano 33 BLE
| Feature | Arduino Giga R1 WiFi | Arduino Nano 33 BLE |
|---|---|---|
| Microcontroller | STM32H747XI with Cortex-M7 and M4 cores | nRF52840 |
| Clock Speed | Main core: 480 MHz, Second core: 240 MHz | 64 MHz |
| Operating Voltage | 3.3V | 3.3V |
| Digital I/O Pins | 76 | 14 |
| Analog Input Pins | 12 | 8 |
| DAC Outputs | 2 (DAC0/DAC1) | - |
| PWM Pins | - | 5 |
| Flash Memory | 2 MB | 1 MB (nRF52840) CPU Flash Memory |
| RAM | 1 MB | 256 KB (nRF52840) SRAM |
| Connectivity | Wi-Fi, Bluetooth®12 | Bluetooth® |
| USB Ports | USB-C for power/programming/communication line, and a USB-A for connecting USB devices (keyboards, mass storage) | Micro USB |
Arduino Giga R1 WiFi Practice Tutorial
-Voice-activated fan using Arduino Giga R1 WiFi
Components Required:
1. Arduino Giga R1 WiFi
2. Fan
3. Relay Module
4. Microphone Module
5. Jumper wires
6. Breadboard
Steps:

1. Assembling the Hardware:
Connect the components as follows:
- Connect the VCC and GND of the relay module to the 5V and GND of Arduino, respectively.
- Connect the IN1 pin of the relay to the digital pin of Arduino.
- Connect the microphone module to the analog pin of Arduino.
2. Setting up the WiFi:
You need to connect the Arduino Giga R1 WiFi to your local network. You can do this by using the WiFi library in Arduino IDE.
3. Programming the Arduino:
You need to write a program that does the following:
- Listens for a specific voice command using the microphone module.
- If the voice command is detected, it triggers the relay to turn the fan on or off.
Here is a basic code structure:
cpp
#include <WiFi.h>
// Replace with your network credentials
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
void setup()
{
// Initialize serial and wait for the port to open:
Serial.begin(9600);
// attempt to connect to WiFi network:
while (WiFi.status() != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network:
WiFi.begin(ssid, password);
// wait 10 seconds for connection:
delay(10000);
}
// you're connected now
Serial.println("You're connected to the network");
// setup the relay and microphone module here
}
void loop()
{
// listen for voice command and control the fan
}4. Voice Recognition:
For voice recognition, you can use various services like Google Assistant, Amazon Alexa, or any other voice recognition APIs. Some of these services may require additional hardware or software setup.
5. Testing:
After everything is set up, you should test the system to make sure it works as expected. Say the specific command that you programmed, and the fan should turn on or off accordingly.
Please note: This is a simplified version of the project. Depending on the voice recognition service you're using, additional steps might be required. Always be careful when working with electrical components.
Resources for the Arduino Giga R1 WiFi
| Type | Description | Source |
|---|---|---|
| Tutorials | The Arduino documentation provides a number of tutorials for the Giga R1 WiFi, including network examples and a cheat sheet. | Arduino Documentation |
| Projects | The Arduino Forum has a gallery of projects shared by users of the Giga R1 WiFi. | Arduino Forum |
| Resources | The Arduino documentation provides a comprehensive overview of the Giga R1 WiFi, including its features, setup guide, and datasheet. Other resources include articles from Digi-Key Electronics and Tom's Hardware. | Arduino Documentation, Digi-Key Electronics, Tom's Hardware |
Arduino Giga R1 WiFi Datasheet
What microcontroller does the Giga R1 WiFi use?
It uses the STM32H747XI dual-core Arm Cortex-M7 and M4 32-bit microcontroller.
How fast does the Giga R1 WiFi run?
The Cortex-M7 runs at 480MHz and the M4 at 240MHz, significantly faster than AVR Megas.
What kind of WiFi and Bluetooth does it have?
It includes 802.11b/g/n WiFi 4 up to 65Mbps and Bluetooth 5 via an ESP32-based module.
How much memory is available on the Giga R1 WiFi?
There is 2MB flash, 1MB RAM, and an additional 8MB SDRAM for data.
Does the Giga R1 WiFi work with existing Mega shields?
Yes, the Mega form factor provides compatibility with many shields designed for AVR Megas.
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