# Nicholas-L-Johnson/flip-card

Repository: https://github.com/Nicholas-L-Johnson/flip-card
Canonical: https://ross.abutalabs.com/products/flip-card
Language: Rust
License: MIT
License Family: permissive
Last push: 2026-06-16T04:05:19+00:00

## Health v2 (maintenance only)
Score: 57/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 87, release rhythm 35, longevity 29
- inputs: {"age_days": 406, "days_push": 78, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1892, forks 83 (observed 2026-08-28T04:05:50.524825+00:00)

## What it is
A business card built on an RP2350 microcontroller that runs a FLIP (fluid-implicit-particle) fluid simulation on its display, including KiCad PCB design files and Rust firmware. It also ships a standalone Rust fluid simulation crate and a WASM-based browser simulator used for debugging the simulation logic.

## Use cases
- run a fluid simulation on embedded hardware
- learn how to implement FLIP fluid simulations in Rust
- design a PCB with a board-edge USB-C charging port
- prototype fluid simulation logic in the browser with WASM
- build a business card with an animated display
- flash custom firmware onto an RP2350 board

## When to choose
- you want a real-world embedded fluid simulation reference with full hardware files
- you are learning FLIP fluid simulation techniques from Ten Minute Physics style implementations
- you need a KiCad example with rechargeable battery and USB-C edge connector design

## When to avoid
- you need a general-purpose fluid simulation library for games or production graphics
- you want a turnkey product rather than a hardware project you assemble and flash yourself
- you need fluid simulation on desktop or server platforms without embedded hardware

## Facets
- artifact type: application
- maturity: active
- function: simulation, embedded, graphics, wasm
- domain: embedded-systems, simulation, hardware, graphics
- platform: embedded, wasm, browser
- tags: fluid-simulation, pcb-design, kicad, rp2350, flip-fluid, firmware, business-card, hardware-project

## Member repositories
- Nicholas-L-Johnson/flip-card (main) score 57

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:50.524825+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:12:56.532523+00:00, confidence not recorded.
  - readme: https://github.com/Nicholas-L-Johnson/flip-card (fetched 2026-08-28T04:05:50.524825+00:00, sha ee8ab423f95e)
- Data as of 2026-08-30T08:39:29.467469+00:00.