The Breadboard Card (also called the MCU Dev Card) is a Tool Card from HW Media Lab LLC that carries a Seeed Studio XIAO module in a Framework Expansion Card form factor. Designed to work with the DockFrame modular USB-C hub or standalone via USB-C, it provides a development platform with breadboard-friendly 2.54 mm headers and a downstream USB-C port for prototyping.
The OSHE I2C/UART Card is a community-developed expansion card providing I2C and UART interfaces in the Framework expansion card form factor. Developed by the Open Source Hardware Enterprise (OSHE), a student team at Michigan Technological University, the card went through multiple design revisions over the 2025–2026 academic year and reached feature-complete status in April 2026.
The RP2040 Expansion Card is a community-designed expansion card integrating a Raspberry Pi RP2040 microcontroller into a Framework expansion card form factor. Designed by Josh Cook (jyancat) of i2cLabs, it provides a programmable MCU with breakout GPIO, usable as a development board or embedded controller accessible directly from the laptop.
The RP2350 20-pin GPIO Expansion Card is an open-source expansion card integrating a Raspberry Pi RP2350A microcontroller into a Framework expansion card, exposing 20 GPIO pins accessible from the laptop. Designed by Tan Siret Akıncı (tansiret) and jrymk, it was presented at Maker Faire Rome 2025 and certified by OSHWA (UID IT000024). The project name references Politecnico di Torino (© 2025 Politecnico di Torino).
The UART Expansion Card is a community-designed expansion card providing a USB-to-UART serial interface for any Framework laptop. Designed by Josh Cook (jyancat) of i2cLabs, it uses a CH340C bridge IC with switchable voltage and logic levels between 3.3 V and 5 V.