Single Board Computers & Modules

Selecting Communication and IoT Core Modules

Choosing the right processing core depends on your field deployment requirements. For local wireless control, dual-radio microcontrollers operating at 3.3V provide integrated Wi-Fi and Bluetooth connectivity. If your system operates in remote locations without local network infrastructure, select industrial-grade cellular core modules. These support LTE-FDD/LTE-TDD networks and include GNSS positioning for asset tracking.

• Check voltage tolerances: Cellular modules typically require 3.3V to 4.2V (3.8V recommended), while standard microcontrollers run on 3.3V.
• Verify antenna connections: Industrial cellular boards use U.FL connectors for external antenna routing.

Ensuring Signal Isolation and Load Control

When interfacing low-voltage microcontrollers with high-voltage industrial machinery, circuit protection is critical. Choose relay modules with optocoupler isolation to prevent electrical noise and voltage spikes from damaging your primary control board. Decide between single-channel modules for isolated single-load switching and multi-channel configurations for complex control arrays.

• Match coil voltages to your system supply, typically 5V, 12V, or 24V DC.
• Verify control signals are TTL/CMOS compatible (3.3V to 5V) to ensure direct operation from your single board computer's GPIO pins.
• Check operating temperature limits: Heavy-duty modules support wide ranges from -55°C up to +125°C.

Integrating Peripherals and System Add-ons

Expanding your system's capabilities requires matching interface protocols and mechanical constraints. For motion control, select multi-channel PWM drivers with I2C interfaces to minimize required GPIO pins. For secure systems, integrate discrete TPM modules with LPC headers to enable hardware-based encryption and secure boot. High-performance processors require active thermal management; low-profile coolers with multi-heatpipe designs and thin fans fit tight enclosures while maintaining safe operating temperatures.