What is CroPDUster CLAUDE.md?

Project instructions for a Rust program running on a Raspberry Pi Pico, a small microcontroller board. The program controls a power distribution unit, a device that manages electrical power, through a web interface.

Use it when developing or building the Pico firmware, including its web-based GPIO controls and over-the-air updates.

It gives a coding agent the project structure and the commands needed to build the bootloader, application, and combined firmware.

How 9elements/CroPDUster configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to 9elements/CroPDUster. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/9elements/CroPDUster/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/9elements/CroPDUster

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/9elements/cropduster/claude-md/github.svg)](https://agentmods.dev/instructions/9elements/cropduster/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/9elements/cropduster/claude-md"><img src="https://agentmods.dev/badge/instructions/9elements/cropduster/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/9elements/cropduster/claude-md"><img src="https://agentmods.dev/badge/instructions/9elements/cropduster/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,945 This file is loaded in full into every session.

When invoked 2,945 The same file — it is already loaded in full.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.02945	$0.02945
Opus 5.5	$0.01178	$0.01178
Sonnet 5.5	$0.00589	$0.00589
Haiku 4.5	$0.00295	$0.00295

Measured 2mo ago against content hash bd7b186784a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

CroPDUster CLAUDE.md scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -u admin:admin http://192.168.1.100/api/status

CLAUDE.md · 305 lines

How it starts

The opening of the file, as written. The whole thing — 305 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

This is a Rust embedded project for the Raspberry Pi Pico (RP2040) that implements a PDU (Power Distribution Unit) controller with the following features:

Bootloader (bootloader/): Uses embassy-boot-rp to manage firmware updates with flash partitioning
Application (application/): HTTP server with web-based GPIO control and OTA firmware updates

The bootloader enables safe over-the-air firmware updates by maintaining separate ACTIVE and DFU (Device Firmware Update) partitions. The application provides a complete web interface for GPIO control and supports firmware uploads via HTTP.

Build Commands

Using cargo xtask (Recommended)

# Build everything (bootloader + application)
cargo xtask build

# Build individual components
cargo xtask build --bootloader            # Build bootloader only
cargo xtask build --application           # Build main PDU controller application
cargo xtask build --application --w6100   # Build main PDU controller application for WIZnet W6100

# Produce combined UF2 (build + combine)
cargo xtask dist
# Produce combined UF2 (build + combine) for WIZnet W6100 variant
cargo xtask dist --w6100

# Flash to device
cargo xtask flash                         # Flash combined UF2 via BOOTSEL drag-and-drop
cargo xtask flash --w6100                 # Flash combined UF2 via BOOTSEL drag-and-drop (for WIZnet W6100)
cargo xtask flash --bootloader            # Flash bootloader only
cargo xtask flash --application           # Flash application only
cargo xtask flash --probe                 # Flash via probe-rs with RTT logging (recommended for dev)
cargo xtask flash --ota 192.168.1.100     # OTA upload to running device

# Utility commands
cargo xtask clean        # Clean all build artifacts
cargo xtask check-tools  # Verify all required tools are installed

All build outputs are placed in the build/ directory:

combined.uf2 - Recommended - Single file with bootloader + application (~280KB)
bootloader.uf2 - Bootloader firmware (16KB)
application.uf2 - Main PDU controller application (168KB)

Read the full file on GitHub · 305 lines

Changes

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.

2mo ago First seen · 305 lines · 2,945 tokens per session scan A bd7b186784a6

Subscribe to this mod's changes

CroPDUster CLAUDE.md is an instructions file published in the GitHub repository 9elements/CroPDUster (5 stars, last pushed 4mo ago), licensed BSD-3-Clause. It adds 2,945 tokens to every session, about $0.0118 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Hardware and IoT microchip-mplab microchip-pic pdu

CroPDUster CLAUDE.md next to 6 instructions from other repositories
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CroPDUster: Instructions file for Claude Code