# Overview

The Holybro DroneCAN Airspeed is an industrial-grade differential pressure measurement module designed for precision airspeed measurement in various UAVs, including planes, VTOLs, and other vehicles. Equipped with DLVR\_L10D digital Pressure Sensor and running ArduPilot AP-Periph Firmware, this module ensures accurate and reliable airspeed data across different flight conditions.

## Features

* **Wide Pressure Range**: Supports up to 2500 Pa and 226.8 km/h (141 mph) airspeed measurement.
* **High-Precision DLVR Sensor** : Based on ALLSENSORS® DLVR with CoBeam technology, providing high precision and low temperature drift.
* **High Accuracy:** Better than 1% accuracy across a wide temperature range, ensuring reliable and accurate readings in demanding application.
* **DroneCAN Protocol**: Compatible with both PX4 and ArduPilot platforms.
* **Aluminum Shell:** Durable and reliable construction.

## Specifications

* MCU: STM32G473CE, 170 MHz, 128KB RAM, 512KB Flash
* Sensor: DLVR\_L10D
* Pressure Range: 2500 Pa
* Burst Pressure: 75 kPa
* Airspeed Measurement: 0-226.8 km/h
* Accuracy: Error rate less than 1.0%
* Firmware: AP-Periph DroneCAN
* Communication Protocol: DroneCAN
* Compatible Flight Controllers: Any flight controller with a CAN interface running PX4 or Ardupilot firmware
* Working Voltage: 4.75\~5.25V
* Current Consumption: \~100mA
* Dimensions: 29 x 35.5 x 16.5 mm (module), 91.5 x 28 x 30 mm (Pitot tube)
* Weight: 38.3g (Includes Pitot tube and tubing)
* Operating Temperature: -20 to 85℃

## **Pinouts & Ports**

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2FxSfRX8GGVjgjhp0gtNV3%2F%E4%BC%81%E4%B8%9A%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_c855e1eb-bce0-41c3-82eb-1c889d350433.png?alt=media&#x26;token=59cdb3a5-e073-42e3-946d-05d97c006ce3" alt=""><figcaption><p>CAN Port Pinout</p></figcaption></figure>

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2FCLRTRNiFi55l2zL2WxGu%2FDLVR_PORT.jpg?alt=media&#x26;token=6e8b3398-1c36-42c3-a909-35d48c36910a" alt="" width="563"><figcaption><p>Sensor Port Definition</p></figcaption></figure>

### **CAN port**

| Pin    | Signal | Volt      |
| ------ | ------ | --------- |
| 1（Red) | VCC    | +5V Input |
| 2      | CAN\_H | +3.3V     |
| 3      | CAN\_L | +3.3V     |
| 4      | GND    | GND       |

### Dimensions

<figure><img src="https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2Fn6xbJKRvQVkfFjW05Q84%2F%E4%BC%81%E4%B8%9A%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_6437b06c-b635-4a0e-947a-e19b34f3e748.png?alt=media&#x26;token=d1ee8c9e-45df-471c-b70f-7f0d81a3d3b7" alt=""><figcaption></figcaption></figure>
