Project File Analysis

flux

0:00

Work done
  • Audited the current schematic and layout state around U1, U2, U3, J1, DS1, and existing passives.
  • Confirmed the board is still 76 mm x 95 mm with a 4-layer layout and that the existing project still has major routing work remaining.
  • Rechecked the ESP32-S3 pin availability on U1: free user pins include IO1, IO2, IO14, IO16, IO17, IO18, IO21, and others reserved in the current design notes.
  • Selected concrete library parts for the missing subsystems:
  • Pulled key datasheet details needed for integration:
    • MCP73871-2CCI/ML: OUT, IN, VBAT, VBAT_SENSE, VPCC, PROG1, PROG2, PROG3, THERM, PG, STAT1, STAT2, CE, SEL, TE, VSS, EP; minimum 4.7 uF on OUT and VBAT, 4.7 uF minimum on input, THERM can be disabled with 10 kΩ to ground, SEL low + PROG2 high gives 500 mA USB mode, and TE high disables the timer.
    • MAX17048G+T10: SDA, SCL, ALRT, QSTRT, VDD, GND, EP, and only a 0.1 uF bypass capacitor is required.
  • Reconfirmed that DS1 still uses the TFT only, with its onboard microSD intentionally unused on LCD_UNUSED_SD.
Success criteria review
  • ❌ Project description was not updated to include the new battery and storage requirements.
  • ❌ Battery subsystem was not yet added or wired: no charger IC, battery connector, BAT rail, or SYS power-path output exists in the schematic.
  • ❌ U2 input was not re-architected from VBUS_5V to charger system output.
  • ❌ Fuel gauge was researched but not added.
  • ❌ microSD socket and ESD/passives were researched but not added or wired.
  • ❌ ERC/DRC after integration could not be run because the integration edits were not applied.
  • ❌ PCB placement/routing for the new circuitry was not started.
Next steps The remaining work is to add and wire the charger, battery connector, optional fuel gauge, and microSD subsystem, then re-review the schematic and proceed into PCB placement and routing. If execution capacity is restored, I can continue from the selected parts and datasheet-backed wiring plan immediately.
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  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
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  • Net Portal
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    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
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  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
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  • Generic Resistor
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    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
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  • Generic Capacitor
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  • Generic Inductor
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  • Terminal
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  • 875105359001
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ESP32-S3 Handheld Controller thumbnail
Production-intent ESP32-S3 handheld controller with USB-C sink power, ST7789 SPI TFT, 5-way controls, class-D speaker output, and factory test pads on a 4-layer PCB.

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