Hardware Options for Embedded Linux
When considering hardware options for embedded Linux, there are several key categories to explore, each with its unique advantages and use cases.
Single Board Computers (SBCs)
A Single Board Computer (SBC) is a complete computer built on a single circuit board, with microprocessors, memory, input/output (I/O), and other features required of a functional computer. SBCs are ready to go, requiring only power and peripherals like keyboards or USB devices to function. A popular example of an SBC is the Raspberry Pi, which provides a versatile platform for various embedded applications.
"You can start off with an SBC, a single board computer."
System on Modules (SOMs)
System on Modules (SOMs) are compact boards that integrate a System on Chip (SoC) along with supporting circuitry. These modules are designed to plug into a custom-designed baseboard, allowing for flexibility and customization. The baseboard can include specific logic and peripherals tailored to the application. This approach saves the complexity and cost associated with designing high-frequency electronics, making it ideal for small production volumes.
"A system on module is an SOC, usually, although you can also do system or modules with Intel based systems."
Fully Custom Hardware
For projects that require specific hardware configurations, fully custom hardware is an option. This involves designing the board from scratch, including the CPU and high-speed peripherals. While this requires significant design expertise, it allows for the creation of hardware tailored precisely to the project's needs.
"Fully custom hardware where you start from scratch and you design the board including the CPU and the high speed peripherals, yourself."
Considerations
Each hardware option comes with its own set of considerations:
- SBCs are ideal for quick deployments and prototyping.
- SOMs offer a balance between customization and complexity, suitable for moderate production volumes.
- Custom hardware provides maximum flexibility but requires more resources and expertise.
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