Circuit Documentation

Summary

The circuit in question appears to be a sensor monitoring and display system. It includes a power source, a microcontroller, a current sensor, resistors, an NTC (thermistor), and an LCD screen with an I2C interface. The microcontroller used is an STM32 Nucleo F303RE, which is responsible for processing sensor data and controlling the LCD display. The current sensor is used to measure the current from the battery, and the NTC is likely used for temperature measurements. The resistors are used for various purposes, including voltage division and current limiting. The LCD screen displays the processed data from the microcontroller.

Component List

Set Battery (7V)

• Description: A 7V battery set providing power to the circuit.
• Pins: +, -

STM32H7

• Description: A high-performance STM32 microcontroller with a wide range of GPIO pins.
• Pins: Multiple GPIO pins including PC11, PC10, PD2, PC12, VDD, E5V, BT0, GND, etc.

Current Sensor 5A

• Description: A sensor capable of measuring up to 5A of current.
• Pins: 1, 2, GND, OUT, VCC

imax

• Description: A component with unspecified functionality, possibly a power regulator or a connector.
• Pins: out +ve, Out negative

Resistor (56k Ohms)

• Description: A resistor with a resistance of 56k Ohms.
• Pins: pin1, pin2

Resistor (43k Ohms)

• Description: A resistor with a resistance of 43k Ohms.
• Pins: pin1, pin2

Resistor (120 Ohms)

• Description: A resistor with a resistance of 120 Ohms.
• Pins: pin1, pin2

STM32 Nucleo F303RE

• Description: A microcontroller board based on the STM32F303RE MCU.
• Pins: Multiple GPIO pins including PC8, PC9, PC6, PB8, PC5, U5V, NC, etc.

NTC (Thermistor)

• Description: A thermistor used for temperature sensing.
• Pins: A0, A1

LCD Screen 16x2 I2C

• Description: A 16x2 character LCD display with an I2C interface.
• Pins: SCL, SDA, VCC, GND

Wiring Details

Set Battery (7V)

• + connected to Current Sensor 5A pin 2 and Resistor (56k Ohms) pin pin1
• - connected to Current Sensor 5A pin 1 and Resistor (43k Ohms) pin pin1

STM32H7

• No specific wiring details provided.

Current Sensor 5A

• 2 connected to Set Battery (7V) pin +
• 1 connected to Set Battery (7V) pin -
• GND connected to STM32 Nucleo F303RE pin GND and LCD Screen 16x2 I2C pin GND
• OUT connected to STM32 Nucleo F303RE pin A1
• VCC connected to NTC pin A1, Resistor (120 Ohms) pin pin1, and STM32 Nucleo F303RE pin +3V3

imax

• out +ve connected to Set Battery (7V) pin +
• Out negative connected to Set Battery (7V) pin -

Resistor (56k Ohms)

• pin1 connected to Set Battery (7V) pin +
• pin2 connected to Resistor (56k Ohms) pin pin2

Resistor (43k Ohms)

• pin1 connected to Set Battery (7V) pin -
• pin2 connected to NTC pin A0

Resistor (120 Ohms)

• pin1 connected to Current Sensor 5A pin VCC
• pin2 connected to STM32 Nucleo F303RE pin A2

STM32 Nucleo F303RE

• GND connected to Current Sensor 5A pin GND and NTC pin A0
• A1 connected to Current Sensor 5A pin OUT
• +3V3 connected to Current Sensor 5A pin VCC
• A0 connected to Resistor (120 Ohms) pin pin2
• D15 connected to LCD Screen 16x2 I2C pin SCL
• D14 connected to LCD Screen 16x2 I2C pin SDA
• +5V connected to LCD Screen 16x2 I2C pin VCC

NTC (Thermistor)

• A1 connected to Current Sensor 5A pin VCC
• A0 connected to STM32 Nucleo F303RE pin GND

LCD Screen 16x2 I2C

• SCL connected to STM32 Nucleo F303RE pin D15
• SDA connected to STM32 Nucleo F303RE pin D14
• VCC connected to STM32 Nucleo F303RE pin +5V
• GND connected to Current Sensor 5A pin GND

Documented Code

No code has been provided for the microcontrollers in the circuit. Typically, the code would be responsible for initializing the peripherals (such as the I2C interface for the LCD and the ADC for the current sensor and NTC), reading sensor data, processing the data, and displaying the results on the LCD screen. Without the code, we cannot document the specific functionalities implemented in the microcontrollers.