alexex1993/mcu-skills · skills/esp32/esp32s3-rlcd42/SKILL.md

esp32s3-rlcd42 skillA

esp32s3-rlcd42 is agent-read markdown (skill) from alexex1993/mcu-skills: Firmware development for the Waveshare ESP32-S3-RLCD-4.2 (SKU 33298 / 33507, and the -EN variant) — an ESP32-S3-WROOM-1-N16R8 AIoT board built around a 4.2" fully reflective 300x400 monochrome LCD on a Sitronix ST7305/ST7306, with no backlight, plus an ES8311 speaker codec, an ES7210 dual-microphone ADC, an SHTC3 temperature/humidity sensor, a PCF85063A RTC, a microSD/TF slot on SDMMC, an 18650 holder with battery sensing, BOOT/KEY/PWR buttons and a 2x8 2.54 mm expansion header. Use when working.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add alexex1993/mcu-skills/esp32s3-rlcd42@git:20260910.b24d566
Exact content
mdr add alexex1993/mcu-skills/esp32s3-rlcd42@sha256:3cd2a02a07c9d227

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_37uqjic63ioqni26.svg)](https://markdownregistry.com/a/art_37uqjic63ioqni26)

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Versions

versioncommittedcommitsizeaudit
git:20260910.b24d566 latest2026-09-10 b24d566 25,168 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (25168 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 · 17 stars · license MIT · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_37uqjic63ioqni26
GET https://markdownregistry.com/api/v1/resolve?ref=alexex1993/mcu-skills/esp32s3-rlcd42
GET https://markdownregistry.com/api/v1/blob/3cd2a02a07c9d2274f8137400a9fa431744593a8d49a10188fc2f43355bed5ee