DataNet System Microservices Architecture

DataNet WiFi Lab System
for telemetry and control

Microservices Architecture

Format & Protocol

WebSocket Lab Server

On Claude

On Claude

🧪 Lab System Microservices Architecture

UI

Web Interface Service

Simple HTML/JS/CSS interface with editable numeric and text fields. Handles user input validation and real-time updates from analysis results.

Tech: Pure HTML/JS/CSS, WebSocket client, minimal framework

GW

API Gateway Service

Central entry point that routes requests, handles authentication, and manages WebSocket connections for real-time communication.

Tech: Node.js/Express or Go, WebSocket support, CORS handling

CT

Control Service

Receives UI field values, validates them, and formats control data for ESP32 register transmission. Maintains current control state.

Tech: Python/FastAPI or Node.js, UDP/TCP client, register mapping

DV

Device Communication Service

Manages WiFi protocol with ESP32. Sends control registers and receives event data blocks containing: on-timestamp, off-timestamp, event-count from binary counter captures on state transitions.

Tech: Python/asyncio, UDP/TCP, binary packet parsing, block buffering

DB

Event Data Service

Receives event data blocks from ESP32: processes pulse timing (on/off timestamps) and event counts. Calculates pulse width, frequency, and counter deltas for analysis.

Tech: Python/FastAPI, time-series DB, event processing, pulse analysis

AN

Analysis Service

Processes logged data, performs calculations, and generates parametric changes to feed back to UI control fields for closed-loop operation.

Tech: Python/NumPy/SciPy, algorithm engine, parameter optimization

📊 Event-Driven Data Flow

Web UI
Controls

→

ESP32
Registers

→

Binary Input
Monitor

→

State Change
Trigger

→

Event Packet
Capture

→

Block Buffer
ESP32

→

Event Data
Service

🔧 ESP32 Event Capture Logic

Interrupt-driven: Binary input triggers on falling edge (off-state transition)

Event packet: [on_timestamp, off_timestamp, counter_value] - 12 bytes typical

Block transmission: Buffer N packets (e.g., 10-100) before WiFi transmission

Counter capture: Sample wide binary counter at exact moment of state transition

Timing precision: ESP32 microsecond timestamps for pulse width analysis

⚡ ESP32 Firmware Services Needed

Interrupt Handler
Binary input monitoring, timestamp capture, counter sampling

Event Buffer Manager
Packet queuing, block-size detection, memory management

WiFi Communication
Register updates from PC, event data transmission to PC

Register Interface
Control parameter storage, add-on board interfacing

ESP32 Protocol
UDP/TCP

WebSocket
Real-time

SQLite/InfluxDB
Time-series

Python/Node.js
Services

Pure HTML/JS
No Libraries

Docker
Containerization