Circuit Documentation

Summary

The circuit in question is designed to interface an Adafruit HUZZAH32 ESP32 Feather board with an Adafruit LSM303AGR sensor module, a force sensing resistor, and a power supply consisting of 3xAA batteries. The ESP32 serves as the central processing unit, capable of reading sensor data from the LSM303AGR and the force sensing resistor. The LSM303AGR is a sensor that combines a digital accelerometer and a digital magnetometer, which can be used for detecting motion or orientation. The force sensing resistor is used to measure the force applied to its surface. The 3xAA batteries provide the necessary power to the circuit. The ESP32 communicates with the LSM303AGR via I2C protocol, utilizing the SCL and SDA lines.

Component List

Adafruit HUZZAH32 ESP32 Feather

• Microcontroller board based on the ESP32 chip
• Features Wi-Fi and Bluetooth connectivity
• Provides a variety of GPIO pins, analog inputs, and power pins
• Utilized for controlling and processing data from sensors

3xAA Battery

• Power supply component
• Provides a voltage source for the circuit

Resistor

• Passive electrical component
• Resistance: 10,000 Ohms
• Used for current limiting or voltage division

Adafruit LSM303AGR

• Sensor module with an accelerometer and magnetometer
• Used for motion and magnetic field sensing
• Communicates with the ESP32 via I2C

Force Sensing Resistor

• Sensor that changes its resistance based on the force applied to its surface
• Used for measuring pressure or force

Wiring Details

Adafruit HUZZAH32 ESP32 Feather

• GND: Connected to the ground plane of the circuit
• 3.3V: Powers the ESP32 and connected to the 3.3V line of the LSM303AGR and the positive terminal of the force sensing resistor
• A2_I34: Analog input connected to one terminal of the force sensing resistor through a 10k Ohm resistor
• SCL: I2C clock line connected to the SCL pin of the LSM303AGR
• SDA: I2C data line connected to the SDA pin of the LSM303AGR

3xAA Battery

• VCC: Connected to the 3.3V power line of the circuit
• GND: Connected to the ground plane of the circuit

Resistor (10k Ohms)

• pin1: Connected to the force sensing resistor and the A2_I34 pin of the ESP32
• pin2: Connected to the ground plane of the circuit

Adafruit LSM303AGR

• VCC: Not connected
• 3.3V: Powered by the 3.3V line from the ESP32
• GND: Connected to the ground plane of the circuit
• SCL: I2C clock line connected to the SCL pin of the ESP32
• SDA: I2C data line connected to the SDA pin of the ESP32

Force Sensing Resistor

• pin 0: Connected to the A2_I34 pin of the ESP32 through a 10k Ohm resistor
• pin 1: Connected to the 3.3V power line of the circuit

Documented Code

No code has been provided for the microcontroller. The documentation of the code would typically include a description of the functionality, setup, and main loop, along with any functions or libraries used to interface with the sensors. Since no code is available, this section cannot be completed. If code becomes available, it should be documented here with explanations of how it interacts with the hardware components described above.