Circuit Documentation
Summary
The circuit in question is designed to interface various sensors and a display module with a Raspberry Pi Pico W microcontroller. The sensors include a DS18B20 temperature sensor, a turbidity sensor, a TDS (Total Dissolved Solids) sensor, and a pH meter. The circuit also includes a 16x2 I2C LCD for output display, an I2C module to facilitate communication, a DC-DC converter to step down voltage, and a 12V 5A power supply to provide the necessary power to the circuit.
Component List
DS18B20 (Temperature Sensor)
- Pins: signal, GND, VCC
- Description: A digital temperature sensor that provides temperature readings in digital form.
Turbidity Sensor
- Pins: GND, VCC, NC, SIG
- Description: A sensor used to measure the turbidity (cloudiness) of a liquid, indicating the degree of particulate matter present.
TDS Sensor
- Pins: P1, P2, +, -, A
- Description: A sensor used to measure the total dissolved solids in water, indicating the concentration of dissolved substances.
pH Meter V1.1
- Pins: DATA, VCC, GND
- Description: A sensor used to measure the acidity or alkalinity of a solution.
Raspberry Pi Pico W
- Pins: VBUS, VSYS, GP16, GP17, GND, GP18, GP19, GP20, GP21, GP22, RUN, GP26, GP27, GP28, ADC_VREF, 3V3 OUT, 3V3_EN, GP0, GP1, GP2, GP3, GP4, GP5, GP6, GP7, GP15, GP14, GP13, GP12, GP11, GP10, GP9, GP8
- Description: A microcontroller board with wireless connectivity that can be programmed to control and process data from various sensors.
16x2 I2C LCD
- Pins: GND, VCC, SDA, SCL
- Description: A liquid crystal display that can show 16 characters per line and has 2 lines. It uses the I2C protocol for communication.
I2C Module
- Pins: SCL, SDA, VCC, GND
- Description: A module that provides an I2C interface for communication between devices.
POWER SUPPLY 12V 5AMP
- Pins: 220V Positive Pole (AC), 220V Negative Pole (AC), GND, GND (DC), 12V-24V Output (DC)
- Description: A power supply unit that converts 220V AC to 12V DC with a current rating of 5A.
DC DC Converter
- Pins: +VCC IN, GND IN, +VCC OUT, GND OUT
- Description: A device that converts a higher DC voltage to a lower DC voltage.
pH Meter
- Pins: Signal, VCC, GND
- Description: A sensor used to measure the pH level of a solution.
Wiring Details
DS18B20 (Temperature Sensor)
- Signal: Connected to Raspberry Pi Pico W (GP15)
- GND: Connected to Raspberry Pi Pico W (GND)
- VCC: Connected to the common VCC net
Turbidity Sensor
- VCC: Connected to the common VCC net
- GND: Connected to Raspberry Pi Pico W (GND)
- SIG: Connected to Raspberry Pi Pico W (GP26)
TDS Sensor
- +: Connected to the common VCC net
- -: Connected to Raspberry Pi Pico W (GND)
- A: Connected to Raspberry Pi Pico W (GP27)
pH Meter V1.1
- DATA: Connected to Raspberry Pi Pico W (GP28)
- VCC: Connected to the common VCC net
- GND: Connected to Raspberry Pi Pico W (GND)
Raspberry Pi Pico W
- VSYS: Connected to the common VCC net
- GND: Connected to the common GND net
- GP15, GP26, GP27, GP28: Connected to respective sensors as detailed above
- GP4 (SDA), GP5 (SCL): Connected to the I2C bus for communication with the 16x2 I2C LCD and I2C module
16x2 I2C LCD
- VCC: Connected to the common VCC net
- GND: Connected to the common GND net
- SDA: Connected to Raspberry Pi Pico W (GP4)
- SCL: Connected to Raspberry Pi Pico W (GP5)
I2C Module
- VCC: Connected to the common VCC net
- GND: Connected to the common GND net
- SDA: Connected to Raspberry Pi Pico W (GP4)
- SCL: Connected to Raspberry Pi Pico W (GP5)
POWER SUPPLY 12V 5AMP
- GND: Connected to the common GND net
- 12V-24V Output (DC): Connected to DC DC Converter (+VCC IN)
DC DC Converter
- +VCC IN: Connected to POWER SUPPLY 12V 5AMP (12V-24V Output (DC))
- GND IN: Connected to the common GND net
- +VCC OUT: Connected to the common VCC net
- GND OUT: Connected to the common GND net
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 and display. Since no code is available, this section remains empty.