KiCad PCB Design Simple 2-Layer Carrier Board with Written Spec Ended

We need a 2-layer carrier board designed from an existing written
specification. The electrical design is already decided and documented.
This job is about turning that specification into a manufacturable board.

Expected effort: roughly 4-8 hours of design work plus one revision
round. We estimate 2-3 weeks from handover to final files.


WHAT THE BOARD IS

A carrier board for a sensor node, approximately 80 x 60 mm.

A commercial ESP32 module (Heltec WiFi LoRa 32 V3) plugs into two 18-way
sockets. The board fans its signals out to four keyed 6-pin connectors
for digital I2S sensors, one keyed 5-pin connector for a GNSS module,
and a keyed 2-pin power input. It also carries a 3.3 V LDO, decoupling
capacitors, series termination resistors, a power LED and test points.

Complexity is low. No high speed signals, no controlled impedance,
no RF routing, no BGA.

The board replaces hand wired Dupont jumpers on a working prototype.


WHAT WE PROVIDE

- A complete written specification: net list, connector pinouts,
component selection, grounding requirements, silkscreen requirements
- Verified mechanical dimensions for the ESP32 module, including header
row spacing measured on a physical board
- Rationale for every design decision, so the intent is clear

The specification ends with a list of open items. These are questions
for you, not gaps in the requirements.


SCOPE OF WORK

- Schematic capture from the supplied specification
- Footprint selection or creation, including the two 18-way sockets
- PCB layout and routing, 2 layers
- Ground pour with a single-point return for the four sensor grounds
- DRC and ERC clean
- Manufacturing output generation
- One revision round after our review


DELIVERABLES

- Schematic: PDF and native source
- PCB layout: native source
- Fabrication files: Gerber RS-274X and Excellon drill
- Bill of materials: CSV with manufacturer part numbers
- Pick and place: CPL / centroid, compatible with JLCPCB or PCBWay
- 3D render: image or STEP, top and bottom
- Editable source files: complete project directory

Editable source files are a firm requirement, not optional. Without them
any future revision restarts from scratch. KiCad strongly preferred for
this reason.


ACCEPTANCE CRITERIA

1. DRC and ERC pass with no errors, using the fabricator's rule set
2. Every net in the specification is present and correctly connected
3. The 3D render shows no mechanical interference between the plugged-in
ESP32 module, the connectors and the board edge
4. All specified silkscreen items are present and legible
5. Test points are exposed, tinned and labelled
6. BOM parts are in stock at the chosen assembly house on delivery


PAYMENT

Fixed price, by milestone: schematic review, layout review, final files.


CONFIDENTIALITY

The specification describes a sensor carrier board. It contains no
proprietary algorithms and no customer data. We ask that it is not
republished or reused. We are happy to sign a mutual NDA before
handing it over. read less