Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add alexex1993/mcu-skills --skill rp2040-picogit clone --depth 1 https://github.com/alexex1993/mcu-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/alexex1993/mcu-skills/rp2040-pico)<a href="https://agentmods.dev/skills/alexex1993/mcu-skills/rp2040-pico"><img src="https://agentmods.dev/badge/skills/alexex1993/mcu-skills/rp2040-pico/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/alexex1993/mcu-skills/rp2040-pico"><img src="https://agentmods.dev/badge/skills/alexex1993/mcu-skills/rp2040-pico.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.03908 |
| Opus 5 | $0.00000 | $0.01954 |
| Sonnet 5 | $0.00000 | $0.00782 |
| Haiku 4.5 | $0.00000 | $0.00391 |
Grade A, and why
rp2040-pico scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 222 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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.hexcerpts, USB CDC + Serial1, ADC with the VSYS ×3 math, PWM and the slice rule, Wire1 remapping, EEPROM withcommit(), interrupts, core 1, BOOTSEL tricks.template/— a project that builds clean, in two variants, plus a scaffold script. Seetemplate/README.md.
Orientation
| MCU | RP2040 — 2× ARM Cortex-M0+ @ 133 MHz (arduino-pico default; SDK default 125 MHz), 40 nm QFN-56 |
| Memory | 264 KB SRAM (6 banks), no internal flash — 2 MB W25Q16JV QSPI, XIP from 0x10000000 + 16 KB cache. Max sketch 2,093,056 B (last 4 KB = emulated EEPROM) |
| LED / button | LED = GPIO25, active-HIGH, not on the header · BOOTSEL button, sampled at power-up only |
| USB | micro-B, FS device/host; Serial = USB CDC; 1200-baud touch reboots into BOOTSEL; enumerates as VID:PID 2E8A:000A ("Raspberry Pi" / "Pico") once the sketch is running |
| ADC | 12-bit 500 ksps: A0=GPIO26, A1=27, A2=28, A3=GPIO29 = VSYS/3 (internal) + channel 4 = die temp; analogRead is 10-bit by default; ENOB 8.7 bits |
| PWM | every GPIO, 16 ch (8 slices × 2); analogWrite default 8-bit @ 1 kHz; GPIO 2n & 2n+1 share one slice |
| Bus defaults | Wire = 4/5 · Wire1 = 26/27 (= A0/A1!) · SPI = 17/18/19/16 · Serial1 = 0/1 · Serial2 = 8/9 |
| Power | VBUS 5 V → diode → VSYS 1.8-5.5 V → RT6150 buck-boost → 3.3 V; 3V3 pin out < 300 mA; 3V3_EN low = board "dead" |
| Debug | 3-pin SWD header (SWCLK/GND/SWDIO); boot ROM is mask ROM — unbrickable |
| Toolchain | PlatformIO + raspberrypi 1.19.0 + arduino-pico 5.6.0 (board_build.core = earlephilhower) |
What ships with it
10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- assets/IMAGE.md 448 B
- reference/board-hardware.md 19 KB
- reference/recipes.md 6.5 KB
- template/.gitignore 13 B
- template/include/board.h 3.0 KB
- template/platformio.ini 1.4 KB
- template/README.md 3.5 KB
- template/src/main.cpp 3.4 KB
- template/variants/minimal/main.cpp 535 B
- template/variants/new-project.sh 1.3 KB runs code
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 222 lines · 0 tokens per session scan A 5d15f9e4109d
rp2040-pico is a skill published in the GitHub repository alexex1993/mcu-skills (17 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 3,908 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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