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rp2040-pico SKILL.md skillA

rp2040-pico from alexex1993/mcu-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add alexex1993/mcu-skills/rp2040-pico@git:20261030.816967f

Pins git:20261030.816967f in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: alexex1993/mcu-skills
Path: skills/rp2/rp2040-pico/SKILL.md
Versions recorded: 3
Latest version: git:20261030.816967f, committed Oct 30, 2026
First version recorded: Aug 22, 2026
Size: 13,504 bytes
Repository stars: 26
License: MIT

Firmware development for the Raspberry Pi Pico (original, RP2040 — dual Cortex-M0+ @ 133 MHz, 264 KB SRAM, 2 MB QSPI flash) — its 26 exposed GPIO, 4-channel 12-bit ADC, 16-channel PWM, 2× UART/I2C/SPI, PIO state machines, USB 1.1 CDC, VSYS/VBUS/SMPS power wiring, and the PlatformIO + arduino-pico (earlephilhower) setup around them. Use when working on this board, any Pico H or Pico clone, or a bare RP2040: project setup, platformio.ini, the earlephilhower-vs-Mbed core choice, pin mapping, USB…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Raspberry Pi Pico (RP2040)

Board-specific firmware knowledge. The Pico's failure modes are quiet: a
wrong `platformio.ini` line silently links a different Arduino core, `Serial`
goes to a port that does not exist yet, and an ADC pin doubles as a power
rail — so read the reference files rather than guessing.

- `reference/board-hardware.md` — the complete board reference: 40-pin map
  with alt functions, the four hidden GPIOs, power tree, clocks, memory map,
  relevant errata **plus** a development guide (Part II: §7 toolchain and
  the core-choice table, §8 peripheral cookbook, §9 flashing, §10
  symptom → cause → fix table).
- `reference/recipes.md` — copy-paste code: `platformio.ini`, `board.h`
  excerpts, USB CDC + Serial1, ADC with the VSYS ×3 math, PWM and the slice
  rule, Wire1 remapping, EEPROM with `commit()`, interrupts, core 1,
  BOOTSEL tricks.
- `template/` — a **project that builds clean**, in two variants, plus a
  scaffold script. See `template/README.md`.

## Orientation

| | |
|---|---|
| MCU | RP2040 — 2× ARM Cortex-M0+ @ **133 MHz** (arduino-pico default; SDK default 125 MHz), 40 nm QFN-56 |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add alexex1993/mcu-skills/rp2040-pico@sha256:4d01d1d5befe1efb

The line at the top of this page pins the label git:20261030.816967f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_m5fjgxevftnylaaf.svg)](https://markdownregistry.com/a/art_m5fjgxevftnylaaf)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Aug 22, 2026 and Oct 30, 2026, about one every 35 days.

version	committed	commit	size	audit
git:20261030.816967f latest	2026-10-30	816967f	13,504 B	A	view · diff
git:20260823.c7a4adf	2026-08-23	c7a4adf	13,435 B	A	view · diff
git:20260822.73b0d0f	2026-08-22	73b0d0f	12,588 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (13504 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

alexex1993/mcu-skills · 26 stars · license MIT · pushed 2026-10-30 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_m5fjgxevftnylaaf
GET https://markdownregistry.com/api/v1/resolve?ref=alexex1993/mcu-skills/rp2040-pico
GET https://markdownregistry.com/api/v1/blob/4d01d1d5befe1efb62b0e84f54fbeecfc772744ba0bc091e06546bc8fb2afa0f

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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