Summary：**ELM11‑Feather Is a Feather‑Compatible Board That Speaks Lua Natively** *An FPGA‑based development

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**ELM11‑Feather Is a Feather‑Compatible Board That Speaks Lua Natively**
*An FPGA‑based development platform that lets engineers code application, driver and hardware layers in Lua, C and VHDL/SystemVerilog for under $30.*

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### Introduction
The embedded‑hardware market has long been split between low‑cost microcontroller boards that favor high‑level languages and expensive FPGA kits that demand deep HDL expertise. A new entrant, the ELM11‑Feather, bridges that gap by offering a Feather‑form‑factor board priced at $29 that natively executes Lua alongside traditional C and hardware description languages. Targeted at hobbyists, educators and professional prototypers, the board promises to simplify the full‑stack development cycle without sacrificing the flexibility of programmable logic.

### Key Developments
At the core of the ELM11‑Feather is a modest‑size Lattice iCE40 FPGA paired with a 48 MHz ARM Cortex‑M0+ microcontroller. The FPGA fabric is exposed through a set of user‑definable I/O pins that can be configured via VHDL or SystemVerilog, while the MCU runs a lightweight Lua interpreter that can directly manipulate FPGA registers through memory‑mapped I/O. This architecture enables three distinct programming approaches:

* **Application layer** – Lua scripts for rapid prototyping, UI logic or sensor fusion.
* **Driver layer** – C code for performance‑critical peripherals or real‑time control loops.
* **Hardware layer** – VHDL/SystemVerilog for custom accelerators, PWM generators or specialized interfaces.

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