Smart Pantry Shelf Schematic Design
- Please confirm after the fix that the Electrical Rule Check "Floating Pin" count drops to 0. Do not start PCB layout. Do not add new components. Keep all existing net names and designators unchanged except for deleting LED_3V3.
Thought for 34 sec
Confirmed: the Electrical Rule Check Floating Pin count is now 0.
- I did not start PCB layout.
- I did not add any new components.
- The
LED_3V3net is no longer present; C3 and LED1 are on3V3. - Existing net names and designators were otherwise kept unchanged.
If you want, I can next do a schematic-only pass for any remaining non-floating ERC warnings.
id like to make it so my esp instead of being smd, is plugged into header pins so i have a breakout the plugs into header pins
Thought for 2 mins 7 sec
I've created a plan and started work on it.
Use female headers
Socket ESP module
Check SW2 clearance
Run ERC/DRC
Refine this doc
Ask about this doc
Design Notes
Smart Pantry Shelf Master Tile
Resolved implementation decisions
- ESP32-S3 native USB uses GPIO19 for D- and GPIO20 for D+.
- Shared I2C bus serves the MAX17048 and MPR121 with 4.7k pull-ups to 3V3.
- GPIO assignments chosen to avoid ESP32-S3 boot-strap conflicts where practical:
- SDA: GPIO8
- SCL: GPIO9
- MPR121 IRQ: GPIO7
- WS2812 DIN: GPIO18
- IRQ_EXT: GPIO10
- TILE_SEL: GPIO11
- EN reset button on EN/CHIP_PU
- BOOT button on GPIO0
- Load-share topology uses a high-side PMOS between VBAT and VSYS with a 100k pull-up from gate to VSYS so the battery path is off by default. An NPN driven from VBUS pulls the PMOS gate low when USB is absent/present according to the selected topology implementation in the schematic wiring step.
Required power rails and nets
- VBUS
- VBAT
- VSYS
- 3V3
- GND
- D+
- D-
- SDA
- SCL
- IRQ
- IRQ_EXT
- TILE_SEL
- USR_LED
- STAT
Requirement notes
- Battery entry must include both large solder pads labeled VBAT+ and VBAT- and a JST-PH 2-pin connector in parallel.
- Expansion must include both a 6-pin 1.27 mm header and a separate 6-pad pogo interface carrying 3V3, GND, SDA, SCL, IRQ_EXT, TILE_SEL.
- Schematic-only deliverable: no PCB layout work in this execution.
Smart Pantry Shelf Master Tile
Resolved implementation decisions
Required power rails and nets
Requirement notes
