Framework RP2350 Expansion Card Design

@engrusmanfaiz

I can design a complete Framework expansion card around the RP235xA in KiCad with full mechanical + electrical compliance to the official Framework envelope. I will strictly follow the Expansion Card reference DXF to ensure zero mechanical overhang and correct USB-C alignment. The RP2350 will be integrated with proper USB-C power, data routing, decoupling, and reference-compliant signal integrity. All GPIOs will be broken out in a consistent, structured header scheme with shared VCC/GND, plus standard I2C/SPI/UART mapping. I will place reset, boot switches, and status LEDs (including WS2812) on the underside with correct visibility and assembly clearance. I will include either external flash footprint or in-package flash optimization depending on space and routing constraints. PCB will be fully production-ready with DRC-clean KiCad files, BOM, Gerbers, PnP, and STEP 3D model aligned to laptop CAD. Mechanical fit, connector tolerances, and assembly constraints will be validated against Framework’s official mechanical rules. Please share any preferred GPIO pinout scheme or I/O priority so I can finalize the architecture immediately.

@tshibsamuel477

Hi there, I’ve carefully read your project description, and I can help design the RP2350 Framework Laptop expansion card with the exact official card outline, flush mechanical fit, USB-C constraints, GPIO breakout, underside buttons/LEDs, and KiCad-ready manufacturing files. I’m Samuel Tshibangu, a mechatronics engineer with hands-on experience in compact PCB design, KiCad/Altium workflows, USB-C hardware, microcontroller boards, GPIO breakout layouts, 3D/STEP mechanical validation, and production-ready Gerber/BOM outputs. I can make sure the board respects the Framework expansion-card envelope, passes DRC, and fits cleanly inside the official CAD boundary. I can deliver the schematic, PCB layout, Gerbers, drill files, pick-and-place, BOM, STEP model, and optional printable housing support if space allows. Feel free to send me your preferred GPIO connector style, and I can start right away. Best regards, Samuel Tshibangu

@ahsanfreelancer7

Hi, Hope you are well. It sounds like a great job and aligns with where I'd like to take my career. I'm eager to learn more. I have experience over the past fifteen years as a PCB Design Engineer at Global Engineering services and RWR Private Ltd. You can visit my freelancer profile page; https://www.freelancer.com/u/ahsanfreelancer7 I’ve been consistently committed to Specific goals, skills or traits the new job entails. Could we schedule some time to discuss about opportunity in more detail? I’d welcome the opportunity to learn more about the role and share how my skills and experiences would benefit you. I’m available to talk at any time. I look forward to speaking with you. Best, AHSAN ULLAH

@leonidye

Hi,I can design the complete Framework Laptop expansion card around the RP235xA/RP2350 microcontroller in KiCad, with strict attention to the official Framework expansion-card mechanical envelope and USB-C constraints. I have experience with compact embedded PCB design, USB-C power/signal routing, microcontroller breakout boards, KiCad manufacturing outputs, STEP/3D model generation, and enclosure-aware PCB layouts. For this project, I will follow the official Framework board outline/DXF, keep all components flush inside the allowed boundary, place the reset/boot switches and LEDs on the underside as requested, and break out the GPIOs in a clean standard pinout with VCC/GND included. I can also include the external flash footprint if space allows, or select the in-package flash variant if that is better for mechanical fit and reliability. Deliverables will include the KiCad schematic and PCB layout, Gerbers, drill files, pick-and-place, BOM, STEP/3D model, and optional printable snap-on housing if time permits. I can start immediately and provide a first placement/mechanical fit review before final routing so we can confirm the board drops correctly into the Framework expansion-card CAD. regards.

@tetianam8

⭐⭐⭐⭐⭐ I’ve worked on compact MCU boards and mechanically constrained designs, and the key to this project is treating the Framework expansion-card envelope as the primary requirement. I would start from the official DXF/CAD from Framework’s repo, import the outline directly into KiCad, and build the layout around the keepouts before placing any electronics. What I’ll deliver KiCad schematic and PCB (latest stable), ERC/DRC-clean. Board outline matched to the official Framework DXF. RP2350 QFN‑60 implementation with USB‑C, ESD, decoupling, SWD, reset/BOOTSEL, RGB LED, and status LED. Consistent GPIO breakout groups with VCC/GND + labeled I²C/SPI/UART pins. Gerbers, drills, pick-and-place, BOM, and assembly drawings. STEP model of the assembled board; printable snap-on housing as a bonus if schedule permits. Quick questions Do you want the breakout connector optimized for dupont/breadboard use (0.1") or for compact internal cabling (1.0 mm/1.27 mm)? Should the RGB LED be diffused through a window in a future printed housing, or is direct visibility from the underside sufficient? Do you need SWD pads only or a tiny keyed connector footprint as well? I can move quickly on the mechanical-first pass so you can verify fit in the laptop CAD before we commit to the final connector and silkscreen details.

@yaroslavmark

Hi, I am an Embedded Hardware Engineer with 10+ years of experience designing USB-C, RP2040/RP2350, and compact high-density PCBs in KiCad. I have completed 50+ production-ready boards, including fine-pitch QFN designs, multilayer layouts, STEP integration, and manufacturing packages that passed first-round ERC/DRC validation. Approach ✅ I will design the RP235xA-based schematic using the official Framework expansion-card specifications, ensuring compliance with USB-C power, signal routing, and mechanical constraints. ✅ I will create a compact PCB that keeps all components within the official card outline while integrating underside reset/boot buttons, RGB/status LEDs, GPIO breakouts, and optional external flash if space permits. ✅ I will standardize GPIO headers with VCC, GND, I2C, SPI, and UART pin groupings and optimize routing for manufacturability, assembly, and reliable signal integrity. Questions ✅ Do you prefer maximizing GPIO count or reserving space for SWD/debug and external flash support? ✅ Is a 4-layer PCB acceptable to simplify routing and improve power integrity within the Framework envelope? ✅ Do you have a preferred breakout connector format (0.1" header or 1 mm 2×5) that should drive the mechanical layout? Best, Yaroslav

@shykhAbubakar

Hi, I am ready to deliver a complete electrical and mechanical design for your Framework Laptop expansion card based on the RP235xA microcontroller. The project focuses on precise fit within the Framework expansion card envelope, USB C compliance, GPIO breakout flexibility, and manufacturable outputs in KiCad. The design will be aligned with IPC 2221, IEC 61010, and other relevant standards. Before we move forward, do let me know: 1. Confirm preference for GPIO breakout pattern? 2. Should the external flash footprint be prioritized even if space is tight? Project Deliverables • Schematic and PCB layout • Gerbers, drill files, pick and place, BOM. • 3D STEP model I have experience of 7+ years in PCB designing. I have delivered: • Compact mixed signal PCBs error free KiCad layouts with 3D STEP verification. • Mechanical fit projects CAD verified housings for laptop and IoT modules. Find my past PCB projects attached with this proposal. Looking forward to your message. Warm regards, Abubakar

@FranciscoSilvi

Hi There! - As you can see in my portfolio on my profile, I have extensive experience designing PCBs and mass production equipment, just like you need. I can handle your project. I apologize for the simple proposal; I know you're probably tired of reading AI-generated proposals, and I'd rather not waste time on that. If you're interested in working with me, send me a message and we can work out the details! Best Regards!

@abdurRafiqM

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@shadabkhan92

With years of experience in circuit design, electrical engineering, and PCB design under my belt, I'm confident in my ability to deliver a flawless and innovative design for your Framework Laptop expansion card. Not only am I well-versed in utilizing KiCad and its latest stable release, but I take great pride in ensuring that all my designs are error-free, compile smoothly, and pass thorough DRC checks. Moreover, my proficiency with Odoo ERP will be an invaluable asset if we need a deep integration with any of your existing workflows to streamline this project even further. At my core, I have always been fascinated by hardware design intertwined with intelligent systems like the project you have at hand. My extensive experience working on sensory projects and designing IoT devices means I am well-acquainted with the need for careful optimization of space without compromising functionality. From what you've shared so far, this project necessitates exactly such a trade-off and I'm equipped to ensure that each inch of your card is put to its best possible use.

@engrhasan01

I have worked on similar embedded hardware and compact PCB projects involving RP2040/RP2350 microcontrollers, USB-C interfaces, space-constrained layouts, and manufacturing-ready KiCad designs. Your requirement to fit within the official Framework Expansion Card envelope while exposing GPIOs in a practical and consistent format is well within my capabilities. Deliverables: KiCad schematic and PCB (latest stable version) Gerbers, drill files, BOM, CPL/Pick-and-Place STEP model of assembled board Manufacturing-ready documentation Optional snap-fit 3D printable enclosure (bonus) Before starting, I would like to confirm: 1. Do you prefer the GPIO breakout on a 2×8 2.54 mm header or a compact 1 mm pitch connector? 2. Is SWD debugging access required on the final board? 3. Do you have a preferred PCB manufacturer (JLCPCB, PCBWay, etc.) so footprints and assembly constraints can be optimized accordingly? Best regards, Hasan

@electronicsdone

Dear Client, This Framework RP2350 Expansion Card should not be treated as only a microcontroller breakout PCB. The real challenge is creating a mechanically compliant expansion card that fits perfectly within Framework’s enclosure constraints while maintaining reliable USB-C connectivity, GPIO accessibility, power integrity, manufacturability, and seamless integration with the laptop ecosystem. I can help develop the complete electrical design, ensuring the RP2350-based card meets Framework’s official expansion-card specifications and is ready for manufacturing and validation. My focus would be: ✅ design the complete RP2350 expansion-card architecture around the Framework mechanical envelope and USB-C interface requirements ✅ ensure all components, GPIO headers, LEDs, switches, and supporting circuitry remain fully within the official expansion-card boundaries Two quick questions: 1. Do you have a preferred GPIO breakout connector style? 2. Would you like the design optimized primarily for maximum GPIO accessibility or for maintaining additional space for external flash and future expansion features? If you message me, I can first outline the mechanical fit strategy, RP2350 pin allocation, USB-C interface architecture, GPIO breakout plan, and validation checklist before moving into detailed schematic and PCB development. Best regards, Prat PCB Must Innovations

@Robertx2002

The priority to fit the RP235xA-based expansion card precisely within Framework’s strict standard envelope is clear and critical. Ensuring all USB-C power and signal lines meet reference standards while maintaining flush edges will prevent installation issues and user frustration. Attentive placement of tactile switches and LEDs on the underside guarantees usability without compromising space. I will develop the KiCad schematic and PCB layout referencing the official Framework DXF boundary for flawless outline compliance. GPIO breakout patterns will align with your flexible header preferences, including consistent I2C/SPI/UART pins with VCC and GND per set. The design, including the external flash footprint decision, will be ready for your first review in ten days with error-free manufacturing files and STEP models. Delivering a fully verified design that integrates seamlessly with Framework’s laptop CAD will keep your project on track. Would you prefer the GPIO headers prioritized for ease of firmware development or hardware debugging first in the layout?

@TheDesignBloke

Hello, I've reviewed your project and understand you need a fully constrained Framework expansion card design built around the RP235xA with strict mechanical compliance to the official expansion card envelope and electrical integration requirements. I will develop a complete KiCad-based schematic and PCB layout ensuring correct RP2350 implementation, proper USB-C power and signal routing, and clean GPIO breakout structure while maintaining full compatibility with the Framework mechanical constraints. The PCB will be designed with strict edge clearance control so no component violates the official card boundary, while also integrating underside tactile switches and LEDs in a serviceable and visible configuration. You will receive full manufacturing outputs including Gerbers, BOM, pick and place files, and a STEP model verified against the Framework DXF to ensure mechanical fit accuracy. Also a quick question are you prioritizing maximum GPIO exposure or tighter signal integrity for high speed peripheral use like SPI and I2C stability Best Regards, Muskan

@ElecHamza

Hi, I will design the complete electrical and mechanical layout for your Framework Laptop expansion card using the RP2350 microcontroller in KiCad. I will strictly adhere to the official DXF constraints from the Framework repository to ensure the entire assembly remains completely flush and fits perfectly. Your required tactile switches, RGB LED, status LED, and standardized I2C/SPI/UART GPIO breakout patterns will be precisely positioned on the underside and outer edge. I will prioritize the in-package flash variant if space becomes critical to guarantee a seamless fit. You will receive error-free KiCad files, manufacturing outputs, and matching STEP models that pass your design rule checks and CAD integration perfectly. Best regards

@miguelcen64

Hi, I can design the Framework expansion card around the RP2350A QFN-60 while strictly matching the official ExpansionCards outline and USB-C power/signal rules. I’ll build the schematic and PCB in latest KiCad, run ERC/DRC, and keep all parts fully inside the flush envelope. I’ll place reset/boot tactile switches, RGB LED, and status LED on the underside, then break out GPIO groups with consistent I2C/SPI/UART pinouts, VCC, and GND. If space allows, I’ll include external flash; otherwise I’ll select the in-package flash variant. Deliverables will include KiCad source, Gerbers, drills, BOM, pick-and-place, and STEP/3D model. I’m comfortable iterating on silkscreen and connector choice until fit is perfect.

@bilalh585

Hello, I am an experienced electronics and PCB design engineer with strong expertise in KiCad, embedded systems, and compact hardware development. I can design a complete Framework Laptop expansion card around the RP2350A (QF-60) while strictly following Framework’s official mechanical envelope and USB-C requirements. The design will be created directly from the official DXF and reference files to ensure perfect fitment within the expansion card boundary. I will integrate the RP2350, Reset and Boot tactile switches, an RGB LED, and a status LED on the underside for accessibility and visibility while installed. GPIOs will be broken out in a consistent layout with dedicated I2C, SPI, UART, VCC, and GND connections, making the card practical for development and expansion. I will carefully optimize component placement and routing to ensure all parts remain within the permitted dimensions while maintaining manufacturability and reliability. If board space allows, I can also include an external flash footprint; otherwise, I will utilize the flash-equipped RP2350 variant. Deliverables will include a fully documented KiCad project, schematic, PCB layout, Gerbers, drill files, pick-and-place data, BOM, and a STEP model of the assembled board. I am also available for revisions and fit verification to ensure the final design passes DRC checks and integrates cleanly with Framework CAD models. Best regards, Bilal Hussain

@olehm07

✔✔✔Hello, how are you? My name is Oleg and I confidently fit the criterion your Framework RP2350 Expansion Card demands. With over a decade of experience in both mechanical and electronics engineering, I possess a nuanced understanding of your project from different angles. In addition to proficiency in tools that you prioritize - Kicad for layout, AutoCAD for design and Solidworks for modelling, my competency extends to Altium for simplified PCB design giving me valuable leverage. The design keeps all components within the official envelope while effectively addressing the intricate constraints of GPIOs. On top of being highly skilled at schematic and PCB layouts, I possess a creative vision that seeks novel solutions. In this case, it translates into considering an external flash chip as well as sticking to the in-package flash variant without compromising space, ensuring your prioritized requirements are met without ambiguity. Apart from the deliverables mentioned above, I can create a 3D model of printed housing which would be an added advantage for you. Moreover, I have developed solid soft skills including effective communication and collaboration which will come into play when performing multiple iterations on silkscreen and connector options until we arrive

@uzairelectronics

I have strong KiCad PCB design experience with compact, constrained form factors and microcontroller-based designs, making this Framework expansion card a great fit. I will design around the RP2350A QFN-60, strictly within the official Framework card envelope using the DXF from their repo, with USB-C power and signal constraints followed exactly. Layout will include reset and boot tactile switches, WS2812 RGB LED and status LED on the underside, GPIO breakout with I2C/SPI/UART pinouts, and optional external flash footprint if space allows. Deliverables: KiCad schematic and DRC-clean layout, Gerbers, drill files, pick-and-place, BOM, and STEP 3D model. Ready to iterate quickly on connector and silkscreen choices until fit is perfect. Best regards, Engr. Muhammad Uzair