Smart Calculator Design Concept

flux

Understood — you want the full electronics schematic/PCB plan.
I’m currently blocked from building it directly in the project because execution is unavailable in this session, but here’s the concrete plan I would implement next:
  • Core controller: ESP32-S3 module for Wi-Fi/Bluetooth plus camera interface.
  • Camera: small visible OV2640-class module at the top edge.
  • UI: calculator keypad matrix, separate physical capture button, standard display.
  • Privacy: no auto-capture, no background recording, indicator LED tied to camera power/enable, confirmation required before wireless send.
  • Power: 1-cell Li-ion battery, USB-C charging, battery protection, regulated 3.3 V rail.
  • Connectivity: BLE for pairing/control, Wi‑Fi for image transfer to phone/computer app.
  • PCB approach: calculator-style rectangular board, top-edge camera, front-facing keypad/display, USB-C on bottom or side edge, RF keepout around antenna.
Recommended functional blocks:
  1. ESP32-S3 module
  2. Camera connector/module
  3. Display interface
  4. Keypad matrix
  5. Capture button + camera LED
  6. USB-C charging + battery path
  7. 3.3 V regulation + decoupling
  8. Programming/debug header or USB data path
What remains to be done:
  • Select exact parts and footprints
  • Create the schematic per datasheets
  • Run ERC/review and fix issues
  • Then proceed to layout after your confirmation
If you want to continue manually or in a later session, I’d start with this exact spec:
  • 3.7 V Li-ion battery
  • USB-C rechargeable
  • ESP32-S3-WROOM module
  • OV2640 camera
  • 2.4" to 2.8" display
  • 4x5 or 5x5 keypad matrix
  • one capture button
  • one green camera-active LED
Ready for me to turn that into a detailed schematic netlist and BOM in the next session.
Create netlist and BOM
Find core parts
Set UI choices
Define power section
Save requirements
No schematic yet

Talk to Flux to get started.

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