Circuit Documentation

Summary of the Circuit

This circuit integrates a Raspberry Pi 4B with several peripheral devices, including an SMA sensor, a PH Meter, a DHT11 temperature and humidity sensor, and an ADS1115 analog-to-digital converter (ADC). The Raspberry Pi 4B serves as the central processing unit, interfacing with the sensors and the ADC to monitor environmental parameters. The SMA sensor is used for signal amplification, the PH Meter for measuring the pH level of a solution, and the DHT11 for measuring temperature and humidity. The ADS1115 is used to convert the analog signals from the sensors into digital data that the Raspberry Pi can process.

Component List

Raspberry Pi 4B

• Description: A single-board computer with multiple GPIO pins for interfacing with various sensors and devices.
• Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN

SMA (Signal Amplification)

• Description: A sensor used for signal amplification.
• Pins: A0, D0, GND, VCC

PH Meter

• Description: A sensor used for measuring the pH level of a solution.
• Pins: Signal, VCC, GND

DHT11 (Temperature and Humidity Sensor)

• Description: A sensor used for measuring temperature and humidity.
• Pins: DATA, GND, VCC

ADS1115 (Analog-to-Digital Converter)

• Description: A precision ADC with 16-bit resolution used to convert analog signals into digital data.
• Pins: VDD, GND, SCL, SDA, ADDR, ALRT, A0, A1, A2, A3

Comments

• Description: Placeholder components for additional notes or documentation purposes.
• Pins: None

Wiring Details

Raspberry Pi 4B

• 3V3: Connected to VCC of SMA and PH Meter
• 5V: Connected to VDD of ADS1115 and VCC of DHT11
• GPIO2: Connected to SDA of ADS1115
• GPIO3: Connected to SCL of ADS1115
• GND: Common ground with SMA, PH Meter, ADS1115, and DHT11
• GPIO17: Connected to DATA of DHT11

SMA

• A0: Connected to A1 of ADS1115
• D0: Not connected
• GND: Connected to common ground
• VCC: Connected to 3V3 of Raspberry Pi 4B

PH Meter

• Signal: Connected to A0 of ADS1115
• VCC: Connected to 3V3 of Raspberry Pi 4B
• GND: Connected to common ground

DHT11

• DATA: Connected to GPIO17 of Raspberry Pi 4B
• GND: Connected to common ground
• VCC: Connected to 5V of Raspberry Pi 4B

ADS1115

• VDD: Connected to 5V of Raspberry Pi 4B
• GND: Connected to common ground
• SCL: Connected to GPIO3 of Raspberry Pi 4B
• SDA: Connected to GPIO2 of Raspberry Pi 4B
• ADDR: Not connected
• ALRT: Not connected
• A0: Connected to Signal of PH Meter
• A1: Connected to A0 of SMA
• A2: Not connected
• A3: Not connected

Documented Code

No code has been provided for the microcontrollers in the circuit. The documentation for the embedded code will be added once the code is available.