Circuit Documentation

Summary

The circuit in question is a complex system that includes various sensors, motor drivers, microcontrollers, power supplies, and other components. The primary function of this circuit is to control peristaltic pumps, monitor flow rates and pressures, and manage power distribution for the connected devices. The circuit utilizes two Arduino Mega 2560 microcontrollers for control logic, Sensirion flow meters for measuring flow rates, Pendotech pressure sensors for monitoring pressures, tb6600 motor drivers for controlling peristaltic pumps, and power supplies for voltage regulation and distribution.

Component List

Sensors

• Pendotech Luer Lock In Line Pressure Sensor: Measures pressure in the system.
• Sensirion Flow Meter: Measures the flow rate of liquids through the system.

Motor Drivers

• tb6600 Micro Stepping Motor Driver: Controls the peristaltic pumps by providing the necessary signals for stepping.

Power Supplies

• 48v to 5v Converter: Steps down voltage from 48V to 5V for low-voltage components.
• MW LRS-350-48: A 48V power supply unit.
• MW LRS-350-24: A 24V power supply unit.
• XL4015 5A DC Buck Step-down: A DC-DC converter for stepping down voltage.

Pumps

• 313KB Peristaltic Pump: A type of pump used for moving fluids in a controlled manner.
• KPCS200 Peristaltic Pump: Another type of peristaltic pump for fluid movement.

Microcontrollers

• Arduino Mega 2560: A microcontroller board based on the ATmega2560, used for controlling various aspects of the circuit.

Communication Modules

• RS232 to TTL converter: Converts signals between RS-232 and TTL serial levels.

Custom PCBs

• Custom PCB w/ ESP32: A custom-designed printed circuit board featuring an ESP32 for advanced control and connectivity.

Miscellaneous

• Comment: Placeholder for additional notes or comments in the circuit design.

Wiring Details

Pendotech Luer Lock In Line Pressure Sensor

• E-: Connected to the ground or negative terminal of the system.
• S+: Signal positive, connected to the data acquisition system.
• S-: Signal negative, connected to the data acquisition system.
• E+: Connected to the positive terminal of the system.

Sensirion Flow Meter

• Green: Ground connection.
• Red: Power supply (3.3V or 5V depending on the model).
• Yellow (Y): Analog or digital output (model dependent).
• Blue: I2C SCL (serial clock line).
• Black: I2C SDA (serial data line).
• White: Additional ground or signal reference.

tb6600 Micro Stepping Motor Driver

• ENA-: Enable negative, controls the enabling of the motor driver.
• ENA+: Enable positive, controls the enabling of the motor driver.
• DIR-: Direction negative, controls the direction of the motor.
• DIR+: Direction positive, controls the direction of the motor.
• PUL-: Pulse negative, controls the stepping pulses to the motor.
• PUL+: Pulse positive, controls the stepping pulses to the motor.
• B-: Connection to one end of motor coil B.
• B+: Connection to the other end of motor coil B.
• A-: Connection to one end of motor coil A.
• A+: Connection to the other end of motor coil A.
• GND: Ground connection.
• VCC: Power supply input.

Power Supplies

• 48v to 5v Converter (In/Out): Steps down 48V to 5V.
• MW LRS-350-48 (L, N, GND, +48V output, -48V output): Provides 48V power supply.
• MW LRS-350-24 (L, N, GND, +24V Output, -24V Output): Provides 24V power supply.
• XL4015 5A DC Buck Step-down (Input +/-, Output +/-): Steps down voltage with adjustable output.

Peristaltic Pumps

• 313KB Peristaltic Pump (A+/A-, B+/B-): Connections for driving the peristaltic pump motor.
• KPCS200 Peristaltic Pump (A+/A-, B+/B-): Connections for driving the peristaltic pump motor.

Custom PCB w/ ESP32

• Contains various pins for power supply, ground, motor control signals, pressure sensor signals, and communication interfaces.

Arduino Mega 2560

• Contains numerous I/O pins for interfacing with sensors, motor drivers, and other peripherals.

RS232 to TTL converter

• VCC: Power supply input.
• RXD: Receive data.
• TXD: Transmit data.
• GND: Ground connection.

Documented Code

Arduino Mega 2560 - Instance 1

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Filename: sketch.ino

Arduino Mega 2560 - Instance 2

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Filename: sketch.ino

Note: The provided code for both instances of the Arduino Mega 2560 is a template with no specific functionality. Additional code is required to control the circuit's components and achieve the desired operation.