Digital AirSpeed sensor ASPD-DLVR
Digital AirSpeed Sensor ASPD-DLVR – Precision AirSpeed Measurement for UAVs
Currently the best supported speed sensors by ArduPilot.
As STM32F405RGT6 are in shortage. ASPD-DLVR has been updated with L431 CAN node since Mar. 2022. L431 version has identical PCB size (purple PCB) and layout to previous F405 version.
Key Features of the Digital AirSpeed Sensor ASPD-DLVR
- CAN node ArduPilot AP_Periph L431,
- DLVR-L10D firmy All Sensors, industrial temperature range,
- CAN and I2C interface,
- Typical platforms: Fixed-Wing, QuadPlane, VTOL,
- CAN JST-GH connector, UAVCAN protocol,
- I2C connector JST-GH, DLVR-L10D I2C mode (I2C address 0x28),
- UART2, software update,
- UART3, spare for external GPS,
- UART3, MSP protocol (to be supported),
- 3.3 V power LED, red,
- CAN bootloader LED (blue)
- Fast blinking: No communication between the CAN node and flight controllers (bootloader AP_Periph mode),
- Slow blinking: Successful communication established between the CAN node and flight controllers.
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Digital AirSpeed Sensor ASPD-DLVR Specifications
Input Voltage Range | 4.5 ~ 5.5 V |
Current Consumption | 60 mA |
Operating Temperature | -20°C to 85°C |
Pressure Range | 2500 Pa (± 10 w H2O) |
Maximum Pressure | 75 kPa |
Speed Range | ±250 km/h |
| Dimensions | 23mm x 23mm x 12.5mm (version F405) |
Weight | 4g |
Wiring and AP Parameters
Connection via CAN
ASPD-DLVR | Flight controller |
5V | 5V |
C-H | CAN High |
C-L | CAN Low |
G | GND |
CAN_D1_PROTOCOL | 1 |
CAN_P1_DRIVER | 1 |
ARSPD_TYPE | 8 (UAVCAN) |
ARSPD_USE | 1 |
Mission Planner-> Initial Setup-> Optional Hardware-> UAVCAN-> SLCan Mode CAN1 -> Parameters -> ARSP_TYPE | 9 (DLVR-10in) Write and reboot |
Connection via I2C
ASPD-DLVR | Flight controller |
5V | 5V |
SCL | SCL |
SDA | SDA |
G | GND |
ARSPD_PIN | 65 |
ARSPD_TYPE | 9 (I2C-DLVR-10in) |
ARSPD_USE | 1 |
Pinout and Solder Pads
CAN
GH-4P Pin | Signal | Cable color |
5V | input 4~6 V | red |
C-H | CAN high | yellow |
C-L | CAN low | blue |
G | GND | black |
I2C
GH-4P Pin | Signal | Cable color |
5V | input 4.5~5.5 V | red |
SCL | I2C-SCL | yellow |
SDA | I2C-SDA | blue |
G | GND | black |
Dedicated solder pads
Pole | Signal | Pole | Signal |
T1 | UART1-TX | Rx4 | UART4-RX |
R1 | UART1-RX | Tx5 | UART5-TX |
Tx1 | UART1-TX | Rx5 | UART5-RX |
Rx1 | UART1-RX | bt | pin Boot |
Tx2 | UART2-TX | 3v3 | build-in input LDO |
Rx2 | UART2-RX | D | SWDIO |
Tx3 | UART3-TX | G | GND |
Rx3 | UART3-RX | C | SWCLK |
Tx4 | UART4-TX | RST | NRST |
Digital AirSpeed Sensor ASPD-DLVR Package Includes
- 1x Digital AirSpeed Sensor ASPD-DLVR
- 2x 4-pin JST-GH to 4-pin JST-GH silicone-insulated cables (20 cm each)
- 1x Pitot tube
- Transparent silicone tube (40 cm)