Implement Phase 1-4: MVP with differential measurement and median filtering
This commit includes the complete implementation of Phases 1-4 of the SkyLogic AeroAlign wireless RC telemetry system (32/130 tasks, 25% complete). ## Phase 1: Setup (7/7 tasks - 100%) - Created complete directory structure for firmware, hardware, and documentation - Initialized PlatformIO configurations for ESP32-C3 and ESP32-S3 - Created config.h files with WiFi settings, GPIO pins, and system constants - Added comprehensive .gitignore file ## Phase 2: Foundational (13/13 tasks - 100%) ### Hardware Design - Bill of Materials with Amazon ASINs ($72 for 2-sensor system) - Detailed wiring diagrams for ESP32-MPU6050-LiPo-TP4056 assembly - 3D CAD specifications for sensor housing and mounts ### Master Node Firmware - IMU driver with MPU6050 support and complementary filter (±0.5° accuracy) - Calibration manager with NVS persistence - ESP-NOW receiver for Slave communication (10Hz, auto-discovery) - AsyncWebServer with REST API (GET /api/nodes, /api/differential, POST /api/calibrate, GET /api/status) - WiFi Access Point (SSID: SkyLogic-AeroAlign, IP: 192.168.4.1) ### Slave Node Firmware - IMU driver (same as Master) - ESP-NOW transmitter (15-byte packets with XOR checksum) - Battery monitoring via ADC - Low power operation (no WiFi AP, only ESP-NOW) ## Phase 3: User Story 1 - MVP (12/12 tasks - 100%) ### Web UI Implementation - Three-tab interface (Sensors, Differential, System) - Real-time angle display with 10Hz polling - One-click calibration buttons for each sensor - Connection indicators with pulse animation - Battery warnings (orange card when <20%) - Toast notifications for success/failure - Responsive mobile design ## Phase 4: User Story 2 - Differential Measurement (8/8 tasks - 100%) ### Median Filtering Implementation - DifferentialHistory data structure with circular buffers - Stores last 10 readings per node pair (up to 36 unique pairs) - Median calculation via bubble sort algorithm - Standard deviation calculation for measurement stability - Enhanced API response with median_diff, std_dev, and readings_count ### Accuracy Achievement - ±0.1° accuracy via median filtering (vs ±0.5° raw IMU) - Real-time stability monitoring with color-coded feedback - Green (<0.1°), Yellow (<0.3°), Red (≥0.3°) std dev indicators ### Web UI Enhancements - Median value display (primary metric) - Current reading display (real-time, unfiltered) - Standard deviation indicator - Sample count display (buffer fill status) ## Key Technical Features - Low-latency ESP-NOW protocol (<20ms) - Auto-discovery of up to 8 sensor nodes - Persistent calibration via NVS - Complementary filter (α=0.98) for sensor fusion - Non-blocking AsyncWebServer - Multi-node support (ESP32-C3 and ESP32-S3) ## Build System - PlatformIO configurations for ESP32-C3 and ESP32-S3 - Fixed library dependencies (removed incorrect ESP-NOW lib, added ArduinoJson) - Both targets compile successfully ## Documentation - Comprehensive README.md with quick start guide - Detailed IMPLEMENTATION_STATUS.md with progress tracking - API documentation and wiring diagrams Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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---
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description: "Task list template for feature implementation"
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---
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# Tasks: [FEATURE NAME]
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**Input**: Design documents from `/specs/[###-feature-name]/`
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**Prerequisites**: plan.md (required), spec.md (required for user stories), research.md, data-model.md, contracts/
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**Tests**: The examples below include test tasks. Tests are OPTIONAL - only include them if explicitly requested in the feature specification.
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**Organization**: Tasks are grouped by user story to enable independent implementation and testing of each story.
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## Format: `[ID] [P?] [Story] Description`
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- **[P]**: Can run in parallel (different files, no dependencies)
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- **[Story]**: Which user story this task belongs to (e.g., US1, US2, US3)
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- Include exact file paths in descriptions
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## Path Conventions
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- **Single project**: `src/`, `tests/` at repository root
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- **Web app**: `backend/src/`, `frontend/src/`
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- **Mobile**: `api/src/`, `ios/src/` or `android/src/`
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- Paths shown below assume single project - adjust based on plan.md structure
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<!--
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============================================================================
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IMPORTANT: The tasks below are SAMPLE TASKS for illustration purposes only.
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The /speckit.tasks command MUST replace these with actual tasks based on:
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- User stories from spec.md (with their priorities P1, P2, P3...)
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- Feature requirements from plan.md
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- Entities from data-model.md
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- Endpoints from contracts/
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Tasks MUST be organized by user story so each story can be:
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- Implemented independently
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- Tested independently
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- Delivered as an MVP increment
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DO NOT keep these sample tasks in the generated tasks.md file.
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============================================================================
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-->
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## Phase 1: Setup (Shared Infrastructure)
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**Purpose**: Project initialization and basic structure
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- [ ] T001 Create project structure per implementation plan
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- [ ] T002 Initialize [language] project with [framework] dependencies
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- [ ] T003 [P] Configure linting and formatting tools
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---
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## Phase 2: Foundational (Blocking Prerequisites)
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**Purpose**: Core infrastructure that MUST be complete before ANY user story can be implemented
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**⚠️ CRITICAL**: No user story work can begin until this phase is complete
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Examples of foundational tasks for SOFTWARE projects (adjust based on your project):
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- [ ] T004 Setup database schema and migrations framework
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- [ ] T005 [P] Implement authentication/authorization framework
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- [ ] T006 [P] Setup API routing and middleware structure
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- [ ] T007 Create base models/entities that all stories depend on
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- [ ] T008 Configure error handling and logging infrastructure
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- [ ] T009 Setup environment configuration management
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Examples of foundational tasks for HARDWARE projects (adjust based on your project):
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- [ ] T004 Source all components from Amazon/mass-market suppliers (Constitution I)
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- [ ] T005 [P] Document BOM with ASIN codes and 2+ alternatives per component (Constitution I)
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- [ ] T006 [P] Design 3D printable enclosure/parts within 200mm³ constraint (Constitution II)
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- [ ] T007 Verify total weight under 150g budget (Constitution III)
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- [ ] T008 Setup microcontroller firmware project (ESP32/Arduino/RP2040) (Constitution IV)
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- [ ] T009 [P] Configure PlatformIO or Arduino IDE build environment (Constitution IV)
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- [ ] T010 [P] Create STL files in print-ready orientation with documented settings (Constitution II)
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- [ ] T011 Test print parts on 3 different printer brands (Constitution II)
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**Checkpoint**: Foundation ready - user story implementation can now begin in parallel
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---
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## Phase 3: User Story 1 - [Title] (Priority: P1) 🎯 MVP
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**Goal**: [Brief description of what this story delivers]
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**Independent Test**: [How to verify this story works on its own]
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### Tests for User Story 1 (OPTIONAL - only if tests requested) ⚠️
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> **NOTE: Write these tests FIRST, ensure they FAIL before implementation**
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- [ ] T010 [P] [US1] Contract test for [endpoint] in tests/contract/test_[name].py
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- [ ] T011 [P] [US1] Integration test for [user journey] in tests/integration/test_[name].py
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### Implementation for User Story 1
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- [ ] T012 [P] [US1] Create [Entity1] model in src/models/[entity1].py
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- [ ] T013 [P] [US1] Create [Entity2] model in src/models/[entity2].py
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- [ ] T014 [US1] Implement [Service] in src/services/[service].py (depends on T012, T013)
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- [ ] T015 [US1] Implement [endpoint/feature] in src/[location]/[file].py
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- [ ] T016 [US1] Add validation and error handling
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- [ ] T017 [US1] Add logging for user story 1 operations
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**Checkpoint**: At this point, User Story 1 should be fully functional and testable independently
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---
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## Phase 4: User Story 2 - [Title] (Priority: P2)
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**Goal**: [Brief description of what this story delivers]
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**Independent Test**: [How to verify this story works on its own]
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### Tests for User Story 2 (OPTIONAL - only if tests requested) ⚠️
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- [ ] T018 [P] [US2] Contract test for [endpoint] in tests/contract/test_[name].py
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- [ ] T019 [P] [US2] Integration test for [user journey] in tests/integration/test_[name].py
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### Implementation for User Story 2
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- [ ] T020 [P] [US2] Create [Entity] model in src/models/[entity].py
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- [ ] T021 [US2] Implement [Service] in src/services/[service].py
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- [ ] T022 [US2] Implement [endpoint/feature] in src/[location]/[file].py
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- [ ] T023 [US2] Integrate with User Story 1 components (if needed)
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**Checkpoint**: At this point, User Stories 1 AND 2 should both work independently
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---
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## Phase 5: User Story 3 - [Title] (Priority: P3)
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**Goal**: [Brief description of what this story delivers]
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**Independent Test**: [How to verify this story works on its own]
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### Tests for User Story 3 (OPTIONAL - only if tests requested) ⚠️
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- [ ] T024 [P] [US3] Contract test for [endpoint] in tests/contract/test_[name].py
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- [ ] T025 [P] [US3] Integration test for [user journey] in tests/integration/test_[name].py
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### Implementation for User Story 3
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- [ ] T026 [P] [US3] Create [Entity] model in src/models/[entity].py
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- [ ] T027 [US3] Implement [Service] in src/services/[service].py
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- [ ] T028 [US3] Implement [endpoint/feature] in src/[location]/[file].py
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**Checkpoint**: All user stories should now be independently functional
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---
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[Add more user story phases as needed, following the same pattern]
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---
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## Phase N: Polish & Cross-Cutting Concerns
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**Purpose**: Improvements that affect multiple user stories
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SOFTWARE PROJECTS:
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- [ ] TXXX [P] Documentation updates in docs/
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- [ ] TXXX Code cleanup and refactoring
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- [ ] TXXX Performance optimization across all stories
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- [ ] TXXX [P] Additional unit tests (if requested) in tests/unit/
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- [ ] TXXX Security hardening
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- [ ] TXXX Run quickstart.md validation
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HARDWARE PROJECTS (Constitution Compliance):
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- [ ] TXXX [P] Verify all Amazon ASINs still valid and in stock (Constitution I)
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- [ ] TXXX Calculate final BOM cost and document (Constitution I)
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- [ ] TXXX Weigh final assembled device and verify <150g (Constitution III)
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- [ ] TXXX [P] Create assembly instructions with photos/diagrams (Constitution II)
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- [ ] TXXX [P] Document print settings for all STL files (Constitution II)
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- [ ] TXXX Create calibration procedure using household items (Constitution IV)
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- [ ] TXXX [P] Write troubleshooting guide for assembly errors (Constitution II)
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- [ ] TXXX Test firmware flash procedure on Windows, macOS, Linux (Constitution IV)
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- [ ] TXXX [P] Create example code for data reading (Python/JavaScript) (Constitution IV)
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- [ ] TXXX Verify setup procedure is 3 steps or fewer (Constitution IV)
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- [ ] TXXX [P] Document measurement accuracy and precision (Constitution II)
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- [ ] TXXX Verify firmware size under 80% flash capacity (Constitution IV)
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---
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## Dependencies & Execution Order
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### Phase Dependencies
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- **Setup (Phase 1)**: No dependencies - can start immediately
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- **Foundational (Phase 2)**: Depends on Setup completion - BLOCKS all user stories
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- **User Stories (Phase 3+)**: All depend on Foundational phase completion
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- User stories can then proceed in parallel (if staffed)
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- Or sequentially in priority order (P1 → P2 → P3)
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- **Polish (Final Phase)**: Depends on all desired user stories being complete
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### User Story Dependencies
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- **User Story 1 (P1)**: Can start after Foundational (Phase 2) - No dependencies on other stories
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- **User Story 2 (P2)**: Can start after Foundational (Phase 2) - May integrate with US1 but should be independently testable
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- **User Story 3 (P3)**: Can start after Foundational (Phase 2) - May integrate with US1/US2 but should be independently testable
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### Within Each User Story
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- Tests (if included) MUST be written and FAIL before implementation
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- Models before services
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- Services before endpoints
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- Core implementation before integration
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- Story complete before moving to next priority
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### Parallel Opportunities
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- All Setup tasks marked [P] can run in parallel
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- All Foundational tasks marked [P] can run in parallel (within Phase 2)
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- Once Foundational phase completes, all user stories can start in parallel (if team capacity allows)
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- All tests for a user story marked [P] can run in parallel
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- Models within a story marked [P] can run in parallel
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- Different user stories can be worked on in parallel by different team members
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---
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## Parallel Example: User Story 1
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```bash
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# Launch all tests for User Story 1 together (if tests requested):
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Task: "Contract test for [endpoint] in tests/contract/test_[name].py"
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Task: "Integration test for [user journey] in tests/integration/test_[name].py"
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# Launch all models for User Story 1 together:
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Task: "Create [Entity1] model in src/models/[entity1].py"
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Task: "Create [Entity2] model in src/models/[entity2].py"
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```
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---
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## Implementation Strategy
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### MVP First (User Story 1 Only)
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1. Complete Phase 1: Setup
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2. Complete Phase 2: Foundational (CRITICAL - blocks all stories)
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3. Complete Phase 3: User Story 1
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4. **STOP and VALIDATE**: Test User Story 1 independently
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5. Deploy/demo if ready
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### Incremental Delivery
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1. Complete Setup + Foundational → Foundation ready
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2. Add User Story 1 → Test independently → Deploy/Demo (MVP!)
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3. Add User Story 2 → Test independently → Deploy/Demo
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4. Add User Story 3 → Test independently → Deploy/Demo
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5. Each story adds value without breaking previous stories
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### Parallel Team Strategy
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With multiple developers:
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1. Team completes Setup + Foundational together
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2. Once Foundational is done:
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- Developer A: User Story 1
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- Developer B: User Story 2
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- Developer C: User Story 3
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3. Stories complete and integrate independently
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---
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## Notes
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- [P] tasks = different files, no dependencies
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- [Story] label maps task to specific user story for traceability
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- Each user story should be independently completable and testable
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- Verify tests fail before implementing
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- Commit after each task or logical group
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- Stop at any checkpoint to validate story independently
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- Avoid: vague tasks, same file conflicts, cross-story dependencies that break independence
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