:PROPERTIES:
:ID:       c4c9fc37-7c71-40bb-bad5-1f6fc95bd014
:CREATED:  [2026-04-07 Tue 12:57]
:EDITED:   [2026-04-07 Tue 13:42]
:END:
#+TITLE: PROJECT: Modular Home Appliances (Universal Literate Note)
#+STARTUP: content
#+FILETAGS: :hardware:iot:esp32:sustainability:psf:

* Overview
The *Modular Home Appliances* project focuses on developing open-source, sustainable designs for major home appliances (washers, fridges, etc.). It utilizes a modular physical architecture coupled with ESP32-based smart interfaces for AI-driven control and seamless Home Assistant integration.

* Phase A: Demand (PRD)
:PROPERTIES:
:STATUS: FROZEN
:END:

** 1. Purpose
Define the requirements for modular, open-source, and intelligent home hardware.

** 2. User Needs
- *Physical Modularity:* Easy replacement and upgrade of mechanical and electrical components.
- *Smart Interfacing:* ESP32-based control boards for connectivity.
- *Multimodal Control:* Support for smartphone apps, physical modular controllers, and direct `org-agent` AI interaction.
- *Sustainability:* Design for longevity, repairability, and efficient power management (inspired by Slate principles).

** 3. Success Criteria
*** TODO Washer/Dryer modular chassis design (draft)
*** TODO ESP32 firmware specification for appliance state machines
*** TODO Home Assistant MQTT discovery protocol implementation
*** TODO Lesson extraction from Slate electric truck architecture

* Phase B: Blueprint (PROTOCOL)
:PROPERTIES:
:STATUS: SIGNED
:END:

** 1. Architectural Intent
Interfaces for appliance telemetry and remote actuation. Source of truth is the physical sensors and the Home Assistant state machine.

** 2. Semantic Interfaces
#+begin_src lisp
(defun appliance-get-telemetry (appliance-id)
  "Queries the MQTT broker for real-time appliance state.")

(defun appliance-actuate-program (appliance-id program-id)
  "Sends a command to the ESP32 controller to start a specific cycle.")
#+end_src

* Phase D: Build (Implementation)
Implementation involves 3D CAD models, circuit designs, and ESP32 firmware (C++/ESP-IDF).

** Firmware Logic (Software Component)
#+begin_src cpp
// Placeholder for ESP-IDF control logic
#+end_src

* Phase E: Chaos (Verification)
Verification involves automated cycle testing, Wi-Fi reconnection resilience, and MQTT latency audits.