Haptic Glove Design Discussion

flux

I can’t analyze or run auto-layout right now because the account currently has no available ACUs, so AI execution features are unavailable.
What has been accomplished so far:
  • Complete schematic was created for the ESP32 haptic glove.
  • ERC was clean at the last schematic check.
  • PCB setup was started with an 80 × 90 mm, 4-layer wearable board.
  • Major components were placed by functional block, including ESP32-S3, USB-C, LiPo JST connector, charger, regulator, DRV2605L, TCS34725 connector, LRA connector, buttons, and passives.
What remains:
  • Inspect current PCB state to determine whether placement, routing, or both are still needed.
  • Complete routing, including USB D+/D−, battery/SYS/3V3, I2C, and LRA outputs.
  • Run DRC/board checks and fix remaining issues.
  • Verify ESP32 antenna keepout, connector accessibility, and wearable mechanical constraints.
Once ACUs are available, I can run the PCB analysis and automatically apply the needed placement/routing updates.
N

namj6280

flux

I can’t run PCB analysis or auto-layout right now because the account currently has no available ACUs, so AI execution features are unavailable.
Current project state from the last completed work:
  • Schematic is complete for the ESP32 haptic glove.
  • ERC was clean at the last check.
  • PCB was initialized as an 80 × 90 mm, 4-layer board.
  • Major parts were already placed by functional block.
  • Routing is still incomplete, with airwires remaining.
What still needs to be done:
  • Inspect the current PCB to decide whether placement refinement, routing, or both are required.
  • Auto-route key nets: USB D+/D−, battery/SYS/3V3, I2C, and LRA motor outputs.
  • Run DRC/board checks after routing.
  • Fix clearance, unrouted-net, and ESP32 antenna/ground-pad issues if present.
When ACUs are available again, I can execute the auto-layout workflow and apply the results automatically.
List unrouted nets
Review P1 placement
Run DRC review
Routing priorities
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Files

Schematic

Layout

3D View

Project Specification
Overview
Wearable haptic glove main PCB that reads a remote TCS34725 RGB sensor module and drives a remote fingertip LRA vibration motor with patterns selected by firmware.
Core Architecture
  • MCU: ESP32-S3 module with native USB programming/debug.
  • Haptic driver: TI DRV2605L for LRA motor drive over I2C.
  • Sensor interface: 4-pin Qwiic/JST-SH-style connector for remote TCS34725 ring sensor module: 3V3_SENSOR, GND, SDA, SCL.
  • Motor interface: 2-pin locking JST GH connector for remote fingertip LRA motor: LRA_OUT+ and LRA_OUT-.
  • Power: USB-C 5 V sink input, single-cell LiPo battery connector, charger/power-path IC, and regulated 3.3 V rail.
  • Programming: ESP32-S3 native USB D+/D- plus BOOT and RESET controls.
Design Assumptions
  • The TCS34725 is on a small remote ring PCB or breakout with local decoupling.
  • The LRA motor is remote at the fingertip and connects only to the DRV2605L differential output.
  • Default firmware should run I2C at 100 kHz initially for cable robustness.
  • Battery cell/capacity and exact LRA motor model are still TBD.
Power Budget Snapshot
  • ESP32-S3 module: design for up to ~500 mA RF/transient current.
  • DRV2605L + LRA: provision ~100 mA class motor load until exact motor is selected.
  • Remote TCS34725 sensor: <10 mA class load.
  • 3.3 V regulator target: at least 600 mA; this is acceptable for prototype BLE/light Wi-Fi use but may be tight for worst-case Wi-Fi + haptic operation.
Open Decisions
  • Exact LiPo capacity and whether the pack is protected.
  • Exact LRA motor rated voltage/resonant frequency.
  • Cable lengths for the fingertip motor and ring sensor.
  • Whether Rev B needs differential I2C/bus buffering for a longer sensor cable.

  • Overview

  • Core Architecture

  • Design Assumptions

  • Power Budget Snapshot

  • Open Decisions