---
title: "sensorflow-firmware-ethernet"
url: "https://maker.wiznet.io/irina/projects/sensorflow-firmware-ethernet/"
markdown_url: "https://maker.wiznet.io/irina/projects/sensorflow-firmware-ethernet/md"
type: "UCC: User Created Content"
author: "jpaullopes"
author_url: "https://github.com/jpaullopes/sensorflow-firmware-ethernet"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "jpaullopes"
original_url: "https://github.com/jpaullopes/sensorflow-firmware-ethernet"
published: "2025-07-29"
language: "en"
likes: 0
views: 2012
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# sensorflow-firmware-ethernet

> Open-source SensorFlow firmware enables IoT devices to send sensor data via Ethernet using HTTP POST, ideal for stable, wired industrial applications.

Original author: jpaullopes (source: https://github.com/jpaullopes/sensorflow-firmware-ethernet)

## Article

> **SensorFlow** is an open-source IoT backend framework designed to collect sensor data from low-power devices like ESP32 or Raspberry Pi Pico and transmit it to the server using HTTP POST. This post dives into the structure and use cases of the `sensorflow-firmware-ethernet` project.

---

### 🔍 Keywords

`SensorFlow`, `IoT Ethernet Firmware`, `ESP32`, `Sensor Data HTTP`, `Embedded Firmware`, `sensorflow-firmware-ethernet`

---

## 1. What is SensorFlow?

**SensorFlow** is a lightweight IoT solution that collects data from sensors and transmits it to a cloud or server over HTTP POST.

**Supported Devices**: ESP32, Pico W, etc.

**Communication Options**: Wi-Fi or Ethernet (e.g., W5500)

**Payload Format**: JSON over HTTP

**Backend Integration**: Works with REST APIs in Node.js or Python

---

## 2. Project Overview: sensorflow-firmware-ethernet

**GitHub Repo**: [jpaullopes/sensorflow-firmware-ethernet](https://github.com/jpaullopes/sensorflow-firmware-ethernet)

**Main Features**:

Ethernet-based networking (e.g., W5500)

Sensor loop management with periodic data transmission

JSON encoding and HTTP POST requests to a backend

```c
// Example: JSON formatting of sensor data
snprintf(data, sizeof(data),
    "{\"temperature\": %.2f, \"humidity\": %.2f}", temp, hum);
```

---

## 3. System Architecture

### ⚙️ Data Flow

```plaintext
[Sensor] → [Firmware (Ethernet)] → [HTTP POST] → [SensorFlow Server]
```

### 📷 Suggested Diagram (with SEO-optimized ALT text)

ALT: "SensorFlow IoT Ethernet firmware block diagram"

Content: Sensor input → JSON encode → Ethernet send → Server receive

---

## 4. Backend API Integration

SensorFlow server backend listens for JSON-formatted POST requests.

**Sample Route**: `/api/v1/data`

**Example Payload**:

```plaintext
{
  "temperature": 25.4,
  "humidity": 48.1,
  "timestamp": "2025-07-29T12:30:00Z"
}
```

**Response Handling**: Wait for HTTP 200 OK → enter next sensor loop

---

## 5. Use Case: ESP32 + W5500 Ethernet Sensor Node

**Sensors**: DHT22, BH1750, etc.

**Board**: ESP32 + W5500 Ethernet module

**Functionality**:

Real-time temperature & humidity monitoring

Reliable data transmission via Ethernet

Server integration via HTTP POST or MQTT

---

## 6. Expandability

Add TLS for secure transmission

Support multi-sensor environments

Enable OTA firmware updates

Integrate with Prometheus or Grafana for visualization

---

## 🏁 Conclusion: Why SensorFlow Ethernet Firmware Matters

In environments where Wi-Fi is unreliable, **wired Ethernet sensor nodes** provide a stable alternative.

Open-source and developer-friendly, SensorFlow is easy to adapt and extend.

Ideal for industrial IoT, smart factories, lab environments, and research setups.

---

### 📚 References

🔗 [SensorFlow Ethernet Firmware GitHub](https://github.com/jpaullopes/sensorflow-firmware-ethernet)

🔗 [SensorFlow Server Overview](https://github.com/jpaullopes/sensorflow-server-ethernet)

🔗 [ESP32 + W5500 Example Projects](https://github.com/Wiznet/WIZ_Ethernet_Library)

---

Source: https://maker.wiznet.io/irina/projects/sensorflow-firmware-ethernet/