soundbox, branch pcbDevice to connect classic audio systems to the networkhttps://cgit.xengineering.eu/soundbox/atom?h=pcb2025-02-02T16:39:39ZWIP: pcb: Finish USB schematic2025-02-02T16:39:39Zxengineeringme@xengineering.eu2025-02-02T10:19:42Zurn:sha1:62d31203d61dfd3bb1da97efd8f6e1c6e69e5242pcb: Connect shell UART to MCU2025-02-02T09:31:33Zxengineeringme@xengineering.eu2025-02-02T09:31:33Zurn:sha1:e0ce1101b1a2da31c2163ad40d5de6d72eeef77apcb: Connect LED pins to MCU2025-02-02T09:29:33Zxengineeringme@xengineering.eu2025-02-02T09:29:33Zurn:sha1:edce489a1657ce1c115c7080a6b38361d7793d90pcb: Connect audio schematic to MCU2025-02-02T09:24:07Zxengineeringme@xengineering.eu2025-02-02T09:24:07Zurn:sha1:27f31e53bcdc4bea3d0fa9c5b641a92adf38fa80pcb: U6: Add component for PWR LED night mode2025-02-02T09:15:01Zxengineeringme@xengineering.eu2025-02-02T09:15:01Zurn:sha1:b4a38b5bc36b93405e601b88f8d53981dc5405a2
The PWR LED should be electrically on but the MCU should be able to
disable it for night modes.
pcb: Make audio labels hierarchically2025-02-01T14:54:56Zxengineeringme@xengineering.eu2025-02-01T14:40:53Zurn:sha1:1c4446e2b3fe330c1377bf0b86d3544f77f0a40fpcb: Implement ESP32 boot mode control2025-02-01T14:33:00Zxengineeringme@xengineering.eu2025-02-01T14:31:42Zurn:sha1:ab7dd91c30078743e55dc88754f7da54224ab4f6pcb: Re-arrange PCB version detection2025-02-01T13:45:08Zxengineeringme@xengineering.eu2025-02-01T13:44:27Zurn:sha1:a5534587eee4ff4a0c06925d81ac01557d3f0f7fpcb: Add R7 and R82025-02-01T13:19:10Zxengineeringme@xengineering.eu2025-02-01T13:19:10Zurn:sha1:7cdacf53d34b73ff6fd9a8305bba3b7e4edfeec7
Those 0R resistors allow to later disconnect the FTDI chip and the
serial bootloader TX/RX lines of the ESP32 if required for debugging.
pcb: Connect VERSION to IO12025-02-01T12:40:34Zxengineeringme@xengineering.eu2025-02-01T12:40:34Zurn:sha1:eae8bb70c7e127f440fd8eb9d2a30a2b02303684
IO2 is a strapping pin for boot mode control.
pcb: Replace / remove global labels2025-02-01T12:32:57Zxengineeringme@xengineering.eu2025-02-01T12:32:57Zurn:sha1:47adc67300f0ab62c039f5f5d2efb5610a812d72
Local labels should be preferred to reduce the scope. Hierarchical
labels should be used to connect to sub-sheets.
pcb: Wire J1 JTAG connector2025-02-01T12:28:12Zxengineeringme@xengineering.eu2025-02-01T12:28:12Zurn:sha1:e739c44ea0e90f1fa484a08074a9a5a644950904pcb: U5: Finish hierarchical labels for serial ports2025-01-29T20:30:04Zxengineeringme@xengineering.eu2025-01-29T20:30:04Zurn:sha1:77809162cf42f65157260e5ffc7b98fdfacac8d0pcb: Adapt label prefixes to hierarchical sheet2025-01-29T19:25:18Zxengineeringme@xengineering.eu2025-01-29T19:25:18Zurn:sha1:ca4e9a0cb24b765cac922e39eecce16e8c17ce55pcb: Split schematic2025-01-29T19:17:01Zxengineeringme@xengineering.eu2025-01-29T19:17:01Zurn:sha1:923eafafdf87a8eeff5e15e8d32212018fd0dfe7pcb: D3: Connect directly to 3V3 and add TODO2025-01-28T20:22:29Zxengineeringme@xengineering.eu2025-01-28T20:22:29Zurn:sha1:366968c15ba7fe2afa6fdbb483d9faba2a66158a
In general the PWR LED D3 should be connected directly to 3V3.
Nevertheless there should be the option to implement a night mode by
firmware which turns of the LED.
pcb: SW1-SW2: Finish schematic2025-01-28T20:05:09Zxengineeringme@xengineering.eu2025-01-28T20:02:04Zurn:sha1:ade1a390a719bd79efe2ff90444e47c869ee5894pcb: D1-D3: Finish schematic2025-01-27T20:10:35Zxengineeringme@xengineering.eu2025-01-27T20:10:35Zurn:sha1:bb3e288f4e7a3a7990ee9fd506c5d95450073a3apcb: U2: Add wiring to schematic2025-01-27T19:54:35Zxengineeringme@xengineering.eu2025-01-26T15:58:55Zurn:sha1:f9f06c079abe3c2a952ca98492b4a6923a288386pcb: U2: Fix datasheet URL2025-01-23T20:55:27Zxengineeringme@xengineering.eu2025-01-23T20:55:27Zurn:sha1:365cb9bda8a45a891eb5b1bdd1d053e3dc29d738pcb: Remove note about MAC EEPROM2025-01-20T20:39:04Zxengineeringme@xengineering.eu2025-01-20T20:39:04Zurn:sha1:e8659cc9d9dfb38cadc8432beb04e447317576b8
It could be validated that the ESP32 S2 has an embedded hardware MAC
address and it is assumed that this is the case for the S3 too.
pcb: Update *_pcb file2025-01-19T17:45:24Zxengineeringme@xengineering.eu2025-01-19T17:45:24Zurn:sha1:2c6e4f04a7ca033b37ee76d7251c2d24de469af8pcb: U3: Make part choice2025-01-19T17:44:32Zxengineeringme@xengineering.eu2025-01-19T17:44:32Zurn:sha1:e27d83a6ef76f9f3852179457a48c751f760b09fpcb: U4: Update part2025-01-19T17:27:29Zxengineeringme@xengineering.eu2025-01-19T17:27:29Zurn:sha1:a471fb29ddc1598dcda7aa4ced715840d0e7b606pcb: Update *_pcb file2025-01-19T16:58:33Zxengineeringme@xengineering.eu2025-01-19T16:58:33Zurn:sha1:40d8485588a0e1eb04aa73fa319ade589550b5afpcb: J3: Remove DNP flag2025-01-19T16:53:51Zxengineeringme@xengineering.eu2025-01-19T16:53:51Zurn:sha1:ddf338ea3044f1fd4a739a37b54a8bc32bfcce03pcb: SW1-SW2: Select exact part and change footprint2025-01-19T16:43:34Zxengineeringme@xengineering.eu2025-01-19T16:43:34Zurn:sha1:21c20ba7790be277effd03afd343e63023941a22pcb: R1-R3: Select resistances2025-01-19T16:06:01Zxengineeringme@xengineering.eu2025-01-19T15:40:42Zurn:sha1:51890cd8ee2362761d93649969b527d03d5c9787
These are selected so that the relative intensities of D1-D3 is 50 %.
pcb: Remove unnecessary space from one MPN2025-01-19T15:43:31Zxengineeringme@xengineering.eu2025-01-19T15:42:32Zurn:sha1:3e290a66f6fa94f4794ae56d1fb3b6ffd45e6330pcb: R4-R5: Finish part selection and add datasheet2025-01-19T15:19:20Zxengineeringme@xengineering.eu2025-01-19T15:19:20Zurn:sha1:1966e9d700a968ac870e164f93e4e07ab1338b30