One of the recurring challenges while building IoT systems is testing device communication, telemetry handling, MQTT flows, and event-driven architectures without constantly relying on physical hardware. To solve this problem, I recently started building a lightweight IoT Simulator CLI focused on helping developers simulate virtual devices directly from the terminal. The project is designed for developers working on IoT platforms, MQTT brokers, RabbitMQ pipelines, telemetry ingestion systems, automation workflows, and real-time event processing. Instead of manually mocking payloads or depending on real devices during development, the simulator allows virtual devices to behave like actual connected hardware with configurable telemetry, topics, and runtime interactions. The current version focuses on providing a simple but flexible developer experience with config-driven device simulation and MQTT communication support.…