The NUCLEO-G071RB is a development board manufactured by Nucleo, featuring the STM32G071RB microcontroller. This microcontroller is based on the 32-bit ARM Cortex-M0+ core, offering a balance of performance and power efficiency. The board is designed to provide a flexible and cost-effective platform for prototyping and developing embedded applications. It supports a wide range of peripherals, including GPIO, ADC, UART, SPI, I2C, and more. Additionally, the NUCLEO-G071RB is compatible with the Arduino ecosystem, making it easy to integrate with various expansion boards and shields.
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This circuit is an emergency alert system that uses a NUCLEO-F072RB microcontroller to send SMS alerts and make calls via a SIM800L GSM module, while obtaining location data from a GPS NEO 6M module. The system is powered by a Li-ion battery and includes a TP4056 module for battery charging and protection, with a rocker switch to control power to the microcontroller.
This circuit features a NUCLEO-F303RE microcontroller board interfaced with various modules for sensing, actuation, and communication. It includes an MQ-2 gas sensor for detecting combustible gases, a buzzer for audible alerts, and a relay for controlling high-power devices. Additionally, the circuit uses an ESP8266 WiFi module for wireless connectivity and an I2C LCD display for user interface and data display.
This circuit features a NUCLEO-F303RE microcontroller board interfaced with several modules for sensing, actuation, and communication. It uses I2C communication to display data on an LCD screen, UART communication to interface with an ESP8266 WiFi module, and reads an MQ-2 gas sensor via an ADC pin. The microcontroller also controls a buzzer for audible alerts and a relay module for switching higher power loads, possibly in response to sensor readings or remote commands received over WiFi.
This circuit consists of two Nucleo 401RE microcontrollers, each controlling a 7-segment display. The first microcontroller is programmed to count from 0 to 9 every second and display the count on its connected 7-segment display, while the second microcontroller is not performing any specific function as its code is empty.
3.3V (core), 5V (external power supply via USB or VIN)
Input Voltage Range
7V to 12V (via VIN pin)
Communication Interfaces
UART, SPI, I2C, CAN, USB 2.0 Full-Speed
GPIO Pins
51 (including analog-capable pins)
ADC
12-bit, up to 16 channels
DAC
12-bit, 2 channels
Clock Speed
Up to 64 MHz
Debugging Interface
ST-LINK/V2-1 (onboard debugger and programmer)
Compatibility
Arduino Uno R3 pinout, ST morpho connectors
Dimensions
68.6 mm x 53.3 mm
Pin Configuration and Descriptions
The NUCLEO-G071RB features multiple pin headers, including Arduino-compatible headers and ST morpho connectors. Below is a summary of the pin configuration:
Arduino-Compatible Header Pinout
Pin Name
Functionality
Description
A0-A5
Analog Input
12-bit ADC channels
D0-D13
Digital I/O
General-purpose digital I/O pins
PWM Pins
D3, D5, D6, D9, D10, D11
PWM output pins
VIN
Power Input
External power supply input (7V-12V)
3.3V
Power Output
3.3V regulated output
5V
Power Output
5V regulated output
GND
Ground
Ground connection
RESET
Reset
Resets the microcontroller
ST Morpho Connector Pinout
Pin Name
Functionality
Description
PA0-PA15
GPIO, ADC, UART, SPI, I2C, etc.
General-purpose I/O and peripheral functions
PB0-PB15
GPIO, ADC, UART, SPI, I2C, etc.
General-purpose I/O and peripheral functions
PC0-PC15
GPIO, ADC, UART, SPI, I2C, etc.
General-purpose I/O and peripheral functions
Usage Instructions
How to Use the NUCLEO-G071RB in a Circuit
Powering the Board:
Connect the board to your computer via the micro-USB cable for power and programming.
Alternatively, supply power through the VIN pin (7V-12V) or the 5V pin.
Programming the Board:
Use the onboard ST-LINK/V2-1 debugger to program the microcontroller.
Compatible IDEs include STM32CubeIDE, Keil MDK, and IAR Embedded Workbench.
For Arduino users, install the STM32 core in the Arduino IDE.
Connecting Peripherals:
Use the Arduino-compatible headers to connect shields or external modules.
For advanced applications, use the ST morpho connectors to access additional pins and peripherals.
Uploading Code:
Write your code in the chosen IDE and compile it.
Upload the code to the board via the ST-LINK interface or USB.
Important Considerations and Best Practices
Ensure the input voltage does not exceed the specified range to avoid damaging the board.
Use decoupling capacitors when connecting external components to reduce noise.
Avoid connecting high-current loads directly to GPIO pins; use transistors or relays instead.
When using the Arduino IDE, ensure the correct board and port are selected in the settings.
Example Code for Arduino IDE
The following example demonstrates how to blink an LED connected to pin D13:
// Blink an LED on pin D13 (built-in LED on the NUCLEO-G071RB)
void setup() {
pinMode(LED_BUILTIN, OUTPUT); // Set the built-in LED pin as an output
}
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // Turn the LED on
delay(1000); // Wait for 1 second
digitalWrite(LED_BUILTIN, LOW); // Turn the LED off
delay(1000); // Wait for 1 second
}
Troubleshooting and FAQs
Common Issues and Solutions
The board is not detected by the computer:
Ensure the USB cable is functional and supports data transfer.
Check that the ST-LINK driver is installed on your computer.
Code upload fails:
Verify that the correct board and port are selected in the IDE.
Ensure no other application is using the ST-LINK interface.
Peripherals are not working as expected:
Double-check the pin connections and configurations in your code.
Ensure the peripheral's voltage and current requirements are within the board's limits.
The board overheats:
Check for short circuits or excessive current draw from connected components.
Ensure the input voltage is within the specified range.
FAQs
Q: Can I use the NUCLEO-G071RB with Arduino shields?
A: Yes, the board is compatible with Arduino Uno R3 shields via its Arduino headers.
Q: Does the board support low-power modes?
A: Yes, the STM32G071RB microcontroller supports multiple low-power modes for energy-efficient applications.
Q: How do I reset the board?
A: Press the RESET button on the board or use the software reset functionality in your code.
Q: Can I use the board for CAN communication?
A: Yes, the STM32G071RB microcontroller includes a CAN interface, accessible via the ST morpho connectors.
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