# M2 video: One joint end to end

> For agents: start with the [agent guide](https://parol6.build/llms.txt). Every page is Markdown by default; add `Accept: text/html` for HTML.

**Status: planned.**

This page links Joel's video for [M2. One joint end to end](/lore/m2-one-joint) once it is published.

## Plan

**Working title:** The first joint: the wrist, from plastic to a joint I can aim.

Beats:

1. Why the robot is built wrist first: the wires.
2. The print timelapse.
3. The gearbox and coupler, in macro.
4. The inductive sensor seeing the screw, with the `#LIMIT` printout on screen.
5. The step math on a whiteboard.
6. The measured 30° jog.

**Shots:** A printer timelapse, a hands macro, a whiteboard or overlay for the ratio math, and a top-down shot of the protractor.

**Teaches:** Gearing, step resolution, sensors, and fit and finish.

## Terms

- **M2 video**: the published video for milestone 2.

## Lore on this page

- [M2. One joint end to end: the wrist and joint 6](/lore/m2-one-joint)
- [The PAROL6 milestones](/lore/milestones)

## What links here

- Agent guide → Joel builds a PAROL6 robot arm, one sourced and filmed milestone at a time. → [Read page](https://parol6.build/llms.txt)

- Change log → What changed in the files served here, newest first. → [Read page](https://parol6.build/log)

- Full agent guide → Joel builds a PAROL6 robot arm, one sourced and filmed milestone at a time. → [Read page](https://parol6.build/llms-full.txt)

- M2. One joint end to end: the wrist and joint 6 → The second milestone prints, assembles and wires the wrist, proves its homing sensor triggers, then jogs joint 6 to a commanded angle and measures the result. → [Read page](https://parol6.build/lore/m2-one-joint)

- Milestone videos → Each milestone ends in one video, and every video is planned until Joel publishes it. → [Read page](https://parol6.build/lore/videos)

- PAROL6 build → Joel builds a PAROL6 robot arm, one sourced and filmed milestone at a time. → [Read page](https://parol6.build/)

- PAROL6 wiki | PAROL6 build → The PAROL6 build wiki: the milestones, their videos and the official sources behind them. → [Read page](https://parol6.build/lore)

- Source change history (log.md) → The generated change log as Markdown. → [Read page](https://parol6.build/log.md)