Circuit & PCB Design
Develop a manufacturable electronic design around the electrical, mechanical, sourcing and operational constraints of the product.
Compact ESP32 Controller
A compact controller board integrating an ESP32-WROOM-32E, coin-cell RTC, piezo buzzer, two buttons and screw-terminal field interfaces.
Project status: Built. Category: Compact Control.
Engineering challenge
Fit the core control, timekeeping, user input and external wiring interfaces into a compact custom board that could be fabricated and assembled in small batches.
Project constraints
- Compact two-layer PCB
- Accessible field wiring
- Real component footprints
- Prototype-level evidence only
Engineering approach
- Captured the controller circuitry and footprints in KiCad
- Routed the design on two layers
- Prepared fabrication outputs and hand-assembled the produced boards
Scope and deliverables
- Schematic capture
- PCB placement and routing
- Manufacturing output preparation
- Prototype assembly
- Editable PCB design
- Two-layer manufacturing package
- Assembled controller hardware
- Small-batch build evidence
Technology
- ESP32-WROOM-32E
- KiCad
- RTC
- 2-layer PCB
Validation and outcome
Fabricated and hand-assembled boards are documented in the portfolio photographs. This supports a built prototype claim, not production qualification.
The design progressed from PCB files to assembled physical hardware in a compact controller format.
Limitations and confidentiality
- No published environmental or compliance testing
- No production-volume claim
- Application-specific firmware performance is not represented here
Only the approved board photographs and high-level engineering details are published.
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Embedded Systems & Firmware
Coordinate firmware, electronics and interfaces so the embedded system behaves predictably in its actual operating environment.