Strato Pi CAN

An Industrial-Grade Raspberry Pi for Demanding Applications

Strato Pi CAN extends the capabilities of the Raspberry Pi with industrial-grade hardware features, making it ideal for use in automation, automotive, and other mission-critical environments where reliability and uninterrupted operation are essential.

This device meets key international compliance standards:

• CE directives for low voltage and electromagnetic compatibility
• Harmonised standards for electrical safety, emissions, and RoHS compliance
• FCC and IC regulatory requirements for North American markets

Strato Pi CAN combines the power of Raspberry Pi with features tailored for robust and long-term deployment in professional systems.

Mounting:

• 4 modules DIN rail case
• power supply and serial connections on screw terminal block

Power supply:

• 9-65Vdc power supply, with surge and reverse polarity protection, and 1.3A resettable fuse
• up to 2.5A max current to the 5V Raspberry Pi power supply input pins (at 24Vdc)

Serial interfaces:

• Controller Area Network (CAN) V2.0B interface, up to 1 Mb/s, with opto-isolator and electrostatic discharge protection
• standard RS-485 interface to the Raspberry Pi serial line, with opto-isolator and electrostatic discharge protection

High reliability and security:

• hardware watchdog implemented in the Strato Pi board, fully independent from the Raspberry Pi, controlled via GPIO
• real time clock (RTC) with replaceable back-up battery
• embedded Microchip ATECC608A secure element chip
• optional pre-assembled SPBF10X Strato Pi Fan active cooling temperature controlled high performance fan

I/O:

• relay with change-over (CO), Single Pole Double Throw (SPDT) terminals

More:

• buzzer, controlled via GPIO
• LEDs for power supply and serial line activity

 Raspberry Pi embedded:

• 1 x Ethernet
• 4 x USB
• 1 x HDMI (RPi 3+) / 2x Micro HDMI (RPi 4)
• 1 x microSD card slot
• 1 x jack for audio and composite video
• WiFi
• Bluetooth/BLE

Power Supply

Designed for 24/7 reliability, Strato Pi CAN includes a robust power input stage tailored for harsh industrial conditions. Unlike standard USB chargers, which are not built for continuous operation, this unit supports a wide DC voltage range and provides exceptional electrical protection.

• Accepts wide-range 9–28V DC input
• Advanced filtering with oversized capacitors, inductors, and diodes
• High-efficiency step-down converter with:
  • Up to 3A continuous output
  • ~95% conversion efficiency
  • Integrated protections: overcurrent, overvoltage, and thermal shutdown
• Reverse polarity protection with resettable fuses
• Surge protection up to ±500V / 2Ω (1.2/50μs), ideal for unstable environments

Real-Time Clock (RTC)

For applications that require accurate timekeeping without relying on an internet connection, Strato Pi CAN integrates a battery-backed real-time clock.

• Based on the Microchip MCP79410 RTC chip
• Connected to the Raspberry Pi via I²C interface
• Automatically switches to a replaceable CR1025 lithium battery during power loss
• Offers advanced features beyond standard date/time tracking
• Battery lasts over 10 years in always-powered systems

CAN Bus Interface

Strato Pi CAN brings industrial CAN bus communication to Raspberry Pi systems, making it ideal for automotive and automation use cases.

• Implements CAN 2.0B standard
• Speeds up to 1 Mbps
• Based on:
  • Microchip MCP2515 CAN controller (SPI interface)
  • Microchip MCP2561 high-speed transceiver
• Fully compatible with SocketCAN drivers in Linux
• Opto-isolated TX and RX lines for electrical protection
• Galvanic isolation via high-efficiency DC-DC converter

Both RS-485 and CAN interfaces can be used simultaneously for maximum flexibility.

RS-485 Serial Interface

Strato Pi CAN includes a fully isolated RS-485 port, enabling reliable communication with industrial devices.

• Isolation from main power supply prevents ground loop failures
• Achieved using:
  • High-efficiency isolated DC-DC converter
  • Three high-speed opto-couplers
• Built-in microcontroller automatically handles data direction (no extra signals or configuration needed)
• Communication via TX/RX pins on the Raspberry Pi

Hardware Watchdog

To ensure system uptime, the unit integrates a dedicated hardware watchdog independent from the Raspberry Pi's internal watchdog.

• Monitors system responsiveness
• Triggers an automatic hardware reset if the software becomes unresponsive
• Fully GPIO-controlled for easy use in custom applications
• Essential for unattended and mission-critical deployments