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2025-02-18pcb: Add hierarchical labels and connectionsxengineering
2025-02-18pcb: Replace text fields by symbol descriptionsxengineering
This makes it easier to keep the descriptions and the text inside the schematic in sync.
2025-02-18pcb: Set title to `iot-contact`xengineering
2025-02-18pcb: Add missing text descriptionsxengineering
2025-02-18pcb: Rename some signalsxengineering
2025-02-18pcb: J7: Add motor connectorxengineering
2025-02-18pcb: J6: Add AC supply connectorxengineering
2025-02-18pcb: J5: Add door / window opener connectorxengineering
2025-02-15pcb: J4: Add vertical RJ45 connectorxengineering
2025-02-15pcb: J3: Add non-PoE 5V power input headerxengineering
Power over Ethernet (PoE) has the disadvantage that GND is significantly below earth. This requires that GND of a PoE-powered device is never attached to earthed devices. In production use cases this is no problem. The earth lines are isolated. Nevertheless for debugging it is sometimes useful to connect measuring equipment like logic analyzers and oscilloscopes to the board. This is not possible with PoE. Thus an alternative earth-based 5V power input is useful.
2025-02-15pcb: J2: Add UART pin headerxengineering
2025-02-15pcb: Fix connection errors reported by ERCxengineering
2025-02-15pcb: SW1-SW2: Add switches for reboot and wipexengineering
2025-02-15pcb: D1-D3: Add LEDs for PWR, UPD and ACTxengineering
2025-02-15pcb: J1: Add JTAG connectorxengineering
2025-02-15pcb: Update schematic hierarchyxengineering
2025-02-14pcb: Add sub-schematicsxengineering
2025-02-14pcb: Add empty KiCad projectxengineering
This is the starting point for the PCB development.
2024-08-23pcb: Remove folderxengineering
It is planned to switch to Ethernet instead of LoRa for communication. Thus the custom PCB with the STM32WL MCU does not make sense anymore. To get started the Ethernet variant will use a ST NUCLEO board to avoid creating a custom PCB first.
2024-06-08pcb: Add TLV70233 voltage converterxengineering
This IC has a small footprint and will provide the 3.3 V for the microcontroller.
2024-06-05pcb: Split into a hierarchy of schematicsxengineering
2024-06-05pcb: Add 10-pin ARM Cortex debug connectorxengineering
2024-06-05pcb: Add USB-C connector to schematicxengineering
2024-06-03pcb: Add STM32WL55JCIx microcontrollerxengineering
Based on UM2592 the development kit Nucleo WL55JC which is used for firmware development is based on the STM32WL55JCI7 microcontroller. Thus this MCU should be a good starting point for now.
2024-06-03pcb: Create empty KiCad 8.0 projectxengineering