Custom Solutions

Custom Controllers Designed for Your Needs

At Sequent Microsystems, we design and manufacture custom controllers tailored to meet the specific requirements of your project. Whether you need a modification of one of our existing products or a completely new design, our engineering team can help you bring your concept to life.

We have extensive experience developing controllers for a wide range of applications, including:

• Industrial automation and process control

• Building automation and energy management

• Smart home solutions

• Data acquisition and monitoring systems

Our solutions are not limited to Raspberry Pi HATs. We also create standalone controllers, communication modules, and mixed-signal hardware that integrate seamlessly into your system.

Our Capabilities

• Digital and analog I/O design (low-voltage to high-voltage)

• Relay and solid-state switching solutions

• Sensor interfaces (thermocouples, RTD, current sensors, etc.)

• Industrial communication protocols (RS485, MODBUS, CAN, M-BUS, 1-Wire, etc.)

• Power management and protection circuits

• Embedded software and firmware development

Why Work With Us

Every project comes with unique requirements. Off-the-shelf hardware isn’t always the right fit — and that’s where we come in. By partnering with Sequent Microsystems, you get:

• Proven design expertise backed by years of product development

• Scalable solutions from prototypes to production runs

• Cost-effective and reliable designs optimized for long-term use

• A direct working relationship with the engineers who design your hardware

If you are looking for a partner who can transform your ideas into custom controllers for industrial, commercial, or home automation, Sequent Microsystems is here to help.

📩 Contact us today to discuss your project requirements.

Example of our recent projects:

POOL CONTROLLER for CONTROL FREAK

• 24VAC Power Supply
• Eight bidirectional 24VAC valve outputs
• Eight 24VDC Open Drain outputs
• Four 10K Thermistor Inputs
• Four 4A/240VAC Relay Outputs
• On-board FAN
• LCD Interface

CM5-based DASHBOARD CONTROLLER

• Compute Module 5 controller for automotive dashboards
• Two CAN Ports
• Eight 0-20V analog inputs
• Two resistor analog inputs with 330Ω pull ups
• Four open drain, PWM modulated 1A outputs
• Eight contact closure optically isolated digital inputs
• Eight active high optically isolated digital inputs
• USB-C port
• HDMI display port
• MIPI display port
• J1850 legagy interface
• 7-20V input power supply
• JAE industrial connector MX47039NF1

CUSTOM CONTROLLER for HeatWeb

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CUSTOM CONTROLLER for Suntrac

• Stand-alone controller running the control loop
• Analog and digital inputs
• Triac outputs
• RS485 ports
• Ethernet port

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CUSTOM CONTROLLER for AMT

• Compute Module 4 based
• 12-24V power supply
• Hardware watchdog
• HDMI port
• RS485 port
• Ethernet with POE
• USB port
• Four analog inputs
• Four digital inputs
  
• Four relays

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CUSTOM CONTROLLER for FarmPod

• pH sensor input
• Conductivity sensor input
• Oxygen sensor input
• Two Spare Atlas Scientific modules
• Two RTD input channels
• Four water level sensor inputs

OUTPUTS

• Four peristaltic pumps outputs
• Four fish feeder outputs
• Twentytwo relays 2A/125V outputs
• Eight bidirectional valve outputs

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CUSTOM CONTROLLER for EVI

• BeagleBone Black Industrial - based
• Eight optically isolated inputs
• Sixteen solid state open drain outputs
• On-board hardware watchdog and fan
• Custom metal enclosure shown bellow

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Custom Weather Station for ST

• Stand-alone operation
• RS485 port
• Two analog RTD inputs
• Two analog 4-20mA inputs
• Pulse Counter Input
• Barometric Pressure Sensor
• Accelerometer

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Custom Data Logger for ST

• Raspberry Pi 4 or Raspberry Pico
• SD Card socket
• Real Time Clock with Battery Backup
• Barometric Pressure sensor
• Four 4-20mA Inputs
• Four RTD Inputs
• Rain Gauge sensor
• Wind sensor
• Four 0-5V or 0-30mV analog inputs
• Air temperature and humidity sensor
• Three RS485 ports
• Solar battery current and voltage monitor

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Custom Controller for KEM-Design

• Stand-alone controller
• LTE-4G connectivity (SIM Card required)
• Current transformer analog input
• Optoisolated digital inputs
• Relay output

Custom Controller for Anric Technologies