> For the complete documentation index, see [llms.txt](https://docs.yudash.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yudash.com/felyx.md).

# FELYX

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## IoT Data Logger for Weather & Hydromet <a href="#felyx-overview" id="felyx-overview"></a>

YuDash FELYX is a compact, industrial IoT data logger designed for **weather, hydromet and environmental monitoring applications**. It combines flexible sensor connectivity, local data logging, edge processing and IoT telemetry in a DIN-rail platform.

FELYX is built around a **Dual-Core 32-bit Xtensa LX7 processor running at 240 MHz** and is designed for low-power operation at approximately **1 W nominal power**, depending on the active features.

FELYX can acquire data from a wide range of sensors and instruments, process the data locally, store it on the industrial SD card, display current values through its local interface, and transmit selected data to cloud platforms or remote servers.

### Flexible Sensor Connectivity

FELYX supports multiple sensor interfaces for integration with weather, water, environmental and industrial instruments.

Supported interfaces include:

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2F6wFoVpSE1go6dJngjpT4%2Ficon_modbus_rtu.png?alt=media&amp;token=c0e25901-595d-4ca7-a20f-f40428eb1084">icon_modbus_rtu.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FLeZvcconh8nA2KHGSreJ%2Ficon_sdi12.png?alt=media&amp;token=52e53a7f-c03c-428d-a102-f4571f2cd102">icon_sdi12.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FkcPk0n4Mcm0TuufcXuc6%2Ficon_analog_inputs.png?alt=media&amp;token=def1dfed-7081-4191-862d-bbea7367dd3f">icon_analog_inputs.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FVZfgHLbiH5MdSGlcmNVW%2Ficon_rain_gauge.png?alt=media&amp;token=3976fc58-fafa-49fd-b873-91d47d168bed">icon_rain_gauge.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FlOWzogXUUbJXaRGMfdA4%2Ficon_wind_sensor.png?alt=media&amp;token=03ef2ff7-c629-4615-bd4c-3cfe9f32a576">icon_wind_sensor.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FYiBzjczFbAHKgP3MThsV%2Ficon_rs232_ascii.png?alt=media&amp;token=26b7de27-940e-4935-b7ab-66e0b307faf1">icon_rs232_ascii.png</a></td></tr></tbody></table>

* Built-in sensor recipes for faster integration with supported instruments

Depending on the FELYX model, analog inputs can support **0–20 mA, 0–5 V and battery-voltage measurement**, along with optional differential low-level voltage measurement.

### Data Logging & Edge Processing

FELYX provides local data acquisition and processing independently of cloud connectivity.

Key capabilities include:

* **8 GB Industrial SD Card**
* Flexible CSV data logging
* Configurable file name and logging interval
* Data Scaling and Clipping
* High-speed **Burst Mode up to 50 Hz**
* Formula-based derived parameters
* ASCII / Custom Protocol Parsing
* Rule-based edge actions
* Embedded SQL database and dashboard through **YuDash AXON**

### IoT Telemetry

FELYX provides multiple options for sending data to cloud platforms, APIs and remote servers.

Connectivity options include **4G/LTE Cellular, Ethernet LAN and 2.4 GHz Wi-Fi**.

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FViy3mTvb1y2vryqN0Fws%2Ficon_4g_lte.png?alt=media&amp;token=19d43eed-ba26-482f-b021-bd4f3dc708f3">icon_4g_lte.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FpcGPy5cR4TJfJ6w6iAbv%2Ficon_ethernet_lan.png?alt=media&amp;token=13b34854-2b02-402d-b24d-d1573e79233f">icon_ethernet_lan.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FmVz8JWiyHpFwOLkLWKtG%2Ficon_wifi.png?alt=media&amp;token=eeffee11-77cd-4362-ae59-2b233823319f">icon_wifi.png</a></td></tr></tbody></table>

Cloud and telemetry features include:

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2FoNv0eaTs50UNXySCRuW8%2Ficon_ftp.png?alt=media&amp;token=abb59bcd-5577-43a8-a925-bb630814df59">icon_ftp.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2Fy05LbhkBsXW5xr1XXhI9%2Ficon_rest_api.png?alt=media&amp;token=34473ac9-a248-4ff8-9581-c28950b4d056">icon_rest_api.png</a></td></tr><tr><td></td><td><a href="https://1858257737-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FToww5EM1cml3ouN6fvnJ%2Fuploads%2F6650xXk5ECaNPJR2Qcbl%2Ficon_mqtt.png?alt=media&amp;token=41bd7ce2-1ba3-4531-9e54-5d4c6b22355c">icon_mqtt.png</a></td></tr><tr><td></td><td></td></tr></tbody></table>

* TLS/SSL encryption
* Configurable JSON / TXT payloads
* Multi-API and Multi-Server support
* Automatic backfill after network recovery
* High-speed real-time data access through Modbus TCP Server

### Local Configuration & Monitoring

FELYX includes a built-in Web UI for configuration and monitoring over LAN or Wi-Fi.

Most device functions use structured, **Wizard-based configuration**, while JSON-based configuration allows device settings to be backed up and restored. The local interface also provides live device monitoring and access to logged data on the SD card. YuDash\_FELYX\_Oct26

The built-in **0.96-inch OLED display** provides local status and diagnostic information directly on the device.

### Expandable for Field Applications

FELYX is available in multiple hardware variants to suit different combinations of Analog, Modbus, SDI-12, Weather and RS232 interfaces.

Optional add-ons include:

* **4G/LTE module with GNSS**
* Davis Wind & Rain sensor interfaces
* 4-channel 24-bit ADC for low-level 0–100 mV inputs
* IP66 outdoor enclosure
* External 16×4 character LCD or 4.3-inch TFT display

## FELYX Product Variants <a href="#felyxpartnumbers" id="felyxpartnumbers"></a>

### FELYX81

FELYX81 is our standard product, mostly available in stock. This is the most versatile product supporting all major protocols. This product variant is used in the documentation reference. It supports&#x20;

### FELYX Part Numbers

| Part No | Analog 0-20mA | Analog 0-5V | Analog 0-90V | RS485 Modbus #1 | Rain Gauge Pulse | SDI-12 | Wind Speed Pulse | RS232 | RS485 Modbus #2 |
| ------- | ------------- | ----------- | ------------ | --------------- | ---------------- | ------ | ---------------- | ----- | --------------- |
| FELYX81 | 4 Ch          | 3 Ch        | 1 Ch         | Yes             | Yes              | Yes    | Yes              | -     | -               |
| FELYX83 | -             | 7 Ch        | 1 Ch         | Yes             | Yes              | Yes    | Yes              | -     | -               |
| FELYX85 | 7 Ch          | -           | 1 Ch         | Yes             | Yes              | Yes    | Yes              | -     | -               |
| FELYX86 | 4 Ch          | 3 Ch        | 1 Ch         | Yes             | Yes              | Yes    | Yes              | Yes   | -               |
| FELYX61 | 4 Ch          | 3 Ch        | 1 Ch         | Yes             | Yes              | -      | -                | -     | Yes             |
| FELYX65 | 7 Ch          | -           | 1 Ch         | Yes             | Yes              | -      | -                | -     | Yes             |

**Common features across all FELYX models:**&#x20;

4G/LTE connectivity, Ethernet LAN, 8 GB industrial SD card.

{% hint style="info" %}
As the FELYX UI is continuously evolving, some interfaces in your product may be slightly different from the ones in this manual.
{% endhint %}