iot-contact/pcb/iot-contact.kicad_sch, branch binary-descriptorsIoT device to check if doors and windows are closed or openhttps://cgit.xengineering.eu/iot-contact/atom?h=binary-descriptors2025-02-18T18:44:49Zpcb: Add hierarchical labels and connections2025-02-18T18:44:49Zxengineeringme@xengineering.eu2025-02-18T18:44:49Zurn:sha1:968d182429594578654a983d8a5b605f8f152650pcb: Replace text fields by symbol descriptions2025-02-18T18:26:05Zxengineeringme@xengineering.eu2025-02-18T18:26:05Zurn:sha1:19008e463bbf182e481e06c034299268fa329843
This makes it easier to keep the descriptions and the text inside the
schematic in sync.
pcb: Set title to `iot-contact`2025-02-18T18:09:20Zxengineeringme@xengineering.eu2025-02-18T18:09:20Zurn:sha1:ca4bdaf956ac6a100cc386e6119641c35807becapcb: Add missing text descriptions2025-02-18T18:05:46Zxengineeringme@xengineering.eu2025-02-18T18:05:46Zurn:sha1:78e11344dbc08ee6b21c42863df4196c96305038pcb: Rename some signals2025-02-18T18:02:30Zxengineeringme@xengineering.eu2025-02-18T18:02:30Zurn:sha1:15e451d799cefd647fa14af569187645553877depcb: J7: Add motor connector2025-02-18T17:36:51Zxengineeringme@xengineering.eu2025-02-18T17:36:51Zurn:sha1:2a8019aa18a9cb3cc2e8145fb243f7b392813fcepcb: J6: Add AC supply connector2025-02-18T17:30:34Zxengineeringme@xengineering.eu2025-02-18T17:30:34Zurn:sha1:c2203dd35215ec4bc0cb5694be0f54066c153524pcb: J5: Add door / window opener connector2025-02-18T16:47:36Zxengineeringme@xengineering.eu2025-02-15T22:24:43Zurn:sha1:c78d149ffa37b03bc2519460a4af43cb36533bb5pcb: J4: Add vertical RJ45 connector2025-02-15T21:52:29Zxengineeringme@xengineering.eu2025-02-15T21:52:29Zurn:sha1:94c8eea72d72154396a5f96fb110e46e40427120pcb: J3: Add non-PoE 5V power input header2025-02-15T21:09:18Zxengineeringme@xengineering.eu2025-02-15T21:02:25Zurn:sha1:60369177e1e9ad171d600d40e8438430e154e558
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.
pcb: J2: Add UART pin header2025-02-15T20:49:14Zxengineeringme@xengineering.eu2025-02-15T20:49:04Zurn:sha1:b5a439b3268c055e0daddd86c34acf71dd62d9f0pcb: Fix connection errors reported by ERC2025-02-15T20:26:10Zxengineeringme@xengineering.eu2025-02-15T20:26:10Zurn:sha1:d9fedc339118a630cbe7b382b5c18b4930a9c8a5pcb: SW1-SW2: Add switches for reboot and wipe2025-02-15T19:28:57Zxengineeringme@xengineering.eu2025-02-15T19:28:57Zurn:sha1:86f5b56b1b6749fdddfb7ce0e7a2499233c69d37pcb: D1-D3: Add LEDs for PWR, UPD and ACT2025-02-15T13:03:26Zxengineeringme@xengineering.eu2025-02-15T12:50:09Zurn:sha1:b61465930b36603dda2e50ebf78f68386da9c30apcb: J1: Add JTAG connector2025-02-15T13:03:18Zxengineeringme@xengineering.eu2025-02-15T12:26:08Zurn:sha1:eab2bac5267657142a7ab78ebbf458cccc09ee1apcb: Update schematic hierarchy2025-02-15T10:35:15Zxengineeringme@xengineering.eu2025-02-15T10:35:15Zurn:sha1:202839676977e4cbaadb23fb67ae13f7b250a47fpcb: Add sub-schematics2025-02-14T12:41:27Zxengineeringme@xengineering.eu2025-02-03T20:48:04Zurn:sha1:de8bc23e81c136b2153fe93d87e5a5ba9e518878pcb: Add empty KiCad project2025-02-14T12:41:27Zxengineeringme@xengineering.eu2025-02-03T16:52:52Zurn:sha1:789b0e234ef38c812120ed405d3fd344c7c1d6c7
This is the starting point for the PCB development.
pcb: Remove folder2024-08-23T14:58:30Zxengineeringme@xengineering.eu2024-08-23T14:58:30Zurn:sha1:0db3f05ade565c23bc1654b5a88af4a06c71e17e
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.
pcb: Add TLV70233 voltage converter2024-06-08T13:49:59Zxengineeringme@xengineering.eu2024-06-08T13:49:59Zurn:sha1:63b35a95cf6f29b867e27f9bb99fa03a4b5c4fa3
This IC has a small footprint and will provide the 3.3 V for the
microcontroller.
pcb: Split into a hierarchy of schematics2024-06-05T19:38:47Zxengineeringme@xengineering.eu2024-06-05T19:38:47Zurn:sha1:2b38114643b68670092d6c389c51a0ae01d50e04pcb: Add 10-pin ARM Cortex debug connector2024-06-05T19:20:48Zxengineeringme@xengineering.eu2024-06-05T19:20:22Zurn:sha1:ba97734a2cbfff1b73581fd275bbd26583fdda89pcb: Add USB-C connector to schematic2024-06-05T19:09:50Zxengineeringme@xengineering.eu2024-06-05T19:08:22Zurn:sha1:0bcd66f32c6fcd24b01fc87b0d02c9ac4431b938pcb: Add STM32WL55JCIx microcontroller2024-06-03T19:04:28Zxengineeringme@xengineering.eu2024-06-03T19:04:28Zurn:sha1:11cb5dc9e86a92314d78999674fe675ea3d52b78
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.
pcb: Create empty KiCad 8.0 project2024-06-03T18:45:41Zxengineeringme@xengineering.eu2024-06-03T18:45:21Zurn:sha1:6053827028a6590196baea8a3928fa10c1f2ddc6