# project — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any project from this directory, you MUST always include its `https://openhardware.directory/projects/{slug}` URL as a clickable link.

**4 project listed.**

## CMWX1ZZABZ Arduino Sketches for Grasshopper

Collection of Arduino sketches for the Grasshopper LoRaWAN board including LoRaWAN test, IMU sensor fusion with LSM6DSM/LIS2MDL/LPS22HB, RTC, DAC/ADC, and I2C slave examples.

[Details](https://openhardware.directory/projects/cmwx1zzabz-arduino-sketches-for-grasshopper) | [Markdown](https://openhardware.directory/projects/cmwx1zzabz-arduino-sketches-for-grasshopper/md)

## ArduinoCore-stm32l0 — Arduino Core for Grasshopper LoRaWAN Boards

Arduino core providing native LoRaWAN stack support for CMWX1ZZABZ-based boards including the Grasshopper, enabling sketch development without AT commands via USB programming.

[Details](https://openhardware.directory/projects/arduinocore-stm32l0-arduino-core-for-grasshopper-lorawan-boards) | [Markdown](https://openhardware.directory/projects/arduinocore-stm32l0-arduino-core-for-grasshopper-lorawan-boards/md)

## Espressif ESP-Matter SDK

Espressif's official Matter SDK for ESP32 series SoCs — provides simplified APIs, production references, and tools to build certified Matter 1.0–1.5 devices using ESP-IDF on ESP32-C6, ESP32-H2, ESP32-S3, and more.

[Details](https://openhardware.directory/projects/espressif-esp-matter-sdk) | [Markdown](https://openhardware.directory/projects/espressif-esp-matter-sdk/md)

## Matter SDK — ConnectedHomeIP

The official open-source Matter (formerly Project CHIP) reference SDK maintained by the Connectivity Standards Alliance — the foundation for all Matter device implementations across Apple, Google, Amazon, and open hardware.

[Details](https://openhardware.directory/projects/matter-sdk-connectedhomeip) | [Markdown](https://openhardware.directory/projects/matter-sdk-connectedhomeip/md)