Profiling LVGL 9 Display Performance: Partial Refresh, Bus Bandwidth and Frame Time
Build a repeatable LVGL profiling experiment that separates rendering, transport, scanout and interaction latency before changing buffer settings.
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Ethernet, Wi-Fi and Cellular Failover: What an Acceptance Test Should Cover
Plan industrial IoT gateway failover tests for Ethernet, Wi-Fi and cellular, covering path health, MQTT recovery, buffering and measurable acceptance criteria.
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Serial Device Server or Modbus Gateway? Start with the Host Protocol and Existing Wiring
Choose a serial device server or Modbus gateway from the host driver, frame format, and existing HMI wiring. Includes a conditional compatibility checklist.
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Modbus RTU to MQTT: Register Mapping, Byte Order and Scaling
Map Modbus RTU registers to MQTT correctly. Learn address offsets, FC03/04, signed values, byte and word order, scaling, freshness and QoS limits.
