Revision C

Core capabilities:

Brineomatic Rev C Board Assembled

  • ESP32-S3 module with WiFi and USB-C
  • 12–30 V DC input with onboard power regulation
  • 5 × relay/solenoid drivers (3A max)
  • 1 × stepper motor driver
  • 2 × 5V servo connectors
  • 2 × flowmeter inputs (product + brine)
  • 2 × TDS connectors (product + brine)
  • 2 × 4–20 mA pressure sensor inputs (filter + membrane)
  • 2 x DS18B20 motor temperature sensor
  • Optional RS485 Modbus VFD pump support (GD20, etc.)
  • I²C expansion (QWIIC)

Power Input

Brineomatic can take power from 12v to 30v, which makes it compatible with both 12v and 24v systems, both lead acid and LFP battery systems. If your watermaker is AC powered, you can also use a small AC to DC converter like the Meanwell HDR-30-24 in order to have a single power supply.

The board has a built-in 5x20mm cylinder format fuse on the power supply input. The recommended fuse is 3.15A.

Additionally, Brineomatic has an industrial grade power protection circuit with reverse polarity, reverse current, and an internal 4A eFuse overcurrent protection.

Sensors and Inputs

  • Product flowrate (pulse)
  • Brine flowrate (pulse)
  • Filter pressure (4–20 mA)
  • Membrane pressure (4–20 mA)
  • Product salinity (TDS)
  • Brine salinity (TDS)
  • Motor temperature (DS18B20)
  • Water temperature (DS18B20)

Actuator Outputs

  • 5 x Relay / Solenoid Drivers (3A max)
  • 1 x Stepper Motor (1.5A max)
  • 2 x DC Servo Motor (3A max)

RS485

The RS485 is configured in half-duplex mode, with Brineomatic operating as MODBUS master.

Rev C Pinout (click to enlarge)

Brineomatic Rev C1 Pinout

Source Files

Manufacturing

If you would like to manufacture your own boards, follow the instructions below:

Kicad File Preparation

  • Install the Kicad Fabrication Toolkit plugin.
  • From the PCB Editor, open Tools -> External Plugins -> Fabrication Toolkit
  • Click Generate to create the production files.
  • Upload the {board_name}.zip file in the first step of the JLC ordering process
  • {board_name}_bom.csv file is the Bill of Materials for PCBA
  • {board_name}_positions.csv file is the Component Placement file for PCBA

JLCPCB Ordering Options

If no option is specified below, use the default options provided by JLCPCB.

PCB

  • PCB Color: Blue
  • Surface Finish: ENIG

Assembly

  • Depanel Boards: YES
  • PCBA Remark - attach image below
  • PCBA Remark - add the text below
After production, insert the following parts:
F1 - LCSC C142708
J24 - LCSC C5188250
J7, J12, J14, J16, J25 - LCSC C5188249
J10 - LCSC C71370

Manufacturing Instructions