esp8266-nodemcu-30pin SKILL.md skillA
esp8266-nodemcu-30pin from alexex1993/mcu-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alexex1993/mcu-skills/esp8266-nodemcu-30pin@git:20261030.816967fPins 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/esp8266/esp8266-nodemcu-30pin/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261030.816967f, committed Oct 30, 2026
- First version recorded
- Aug 30, 2026
- Size
- 18,919 bytes
- Repository stars
- 26
- License
- MIT
Firmware development for the 30-pin NodeMCU ESP8266 devkit — NodeMCU DevKit V1.0 / Amica (CP2102) and LoLin NodeMCU V3 (CH340G), built on the Ai-Thinker ESP-12E or ESP-12F module (ESP8266EX, 4 MB flash), with PlatformIO and the Arduino ESP8266 core (`board = nodemcuv2`). Use when working on a NodeMCU, ESP-12E, ESP-12F or ESP8266 devkit: project setup, platformio.ini, the D0-D10 vs GPIO numbering, which pins are safe and which break the boot, GPIO15/GPIO0/GPIO2 strapping, the A0 divider and 1 V…
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
# NodeMCU ESP8266 devkit — 30-pin The board that made the ESP8266 usable: an Ai-Thinker ESP-12E/F module, a USB-UART bridge, an LDO, two buttons, 15 pins a side. Everything hard about it is a pin with a second job, a peripheral that is software rather than silicon, or a number that means something different than it looks like. Read `reference/board-hardware.md` before choosing pins. Most ESP8266 tutorials are written for core 2.x and for a different board; several of their defaults are now wrong. - `reference/board-hardware.md` — the board: full header map with D-number ↔ GPIO translation, the strapping resistors and their values, the two LEDs, the A0 divider, the auto-program circuit and its truth table, the power tree — **plus** a development guide (§9 toolchain and flash layouts, §10 flashing and recovery, §11 peripheral cookbook, §12 symptom → cause → fix table). - `reference/esp8266-soc.md` — the silicon: the 17 GPIOs and which six are the flash bus, memory map and why a sketch cannot exceed ~1 MB, clocks, the ADC's two mutually exclusive modes, UART/SPI/HSPI/I2S pin tables, PWM as a timer service, sleep modes and their real currents. …
Read the whole file at its exact version.
How to install
mdr add alexex1993/mcu-skills/esp8266-nodemcu-30pin@sha256:05ce95ae2e351714The 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.
[](https://markdownregistry.com/a/art_c3gmum5gnk7y23th)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 30, 2026 and Oct 30, 2026, about one every 61 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261030.816967f latest | 2026-10-30 | 816967f | 18,919 B | A | view · diff |
| git:20260830.c806c0a | 2026-08-30 | c806c0a | 18,860 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (18919 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
alexex1993/mcu-skills · 26 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_c3gmum5gnk7y23th GET https://markdownregistry.com/api/v1/resolve?ref=alexex1993/mcu-skills/esp8266-nodemcu-30pin GET https://markdownregistry.com/api/v1/blob/05ce95ae2e3517146598bbe0c04893262441738f4495a2dd9291794df5b7d122
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.