Airspeed Sensor USER MANUAL – V1.1 (Rev.
Hitec Airspeed Sensor - User Manual Introduction Specifications Variants Hardware & Sensors Physical Performance Connectivity Components & Functions LED Indicators Pinouts Pitot Tube Ardupilot Integration Guide I2C DroneCAN Firmware Update Introduction Thank you for purchasing the Hitec Commercial Solutions Airspeed Sensor, featuring the best-in-class DLVR pressure sensor.
Pressure Sensor DLVR-LxxD-E1BD-I-PI3N MCU STM32G441 Firmware AP_Periph Interfaces I2C, CAN Dimensions 30 x 25 mm Physical (1.18 x 0.98 in) 6g Weight (0.2 oz) Performance Input Voltage Range 5 to 36VDC Operating Temperature Range -20C to 85C Humidity Range 0 to 95% RH Proof Pressure 200 in. H20 (75KPa) Burst Pressure 300 in. H20 (125KPa) 800 in.
2-Position DIP Switch SW1 Toggle connection mode & CAN termination LED Indicators Mode/State LED1 LED2 LED3 LED4 Bootloader I2C Status CAN Status Power Off Off Off On Bootloader Mode Blinking quickly Off Off On CAN Mode Off Off Blinking at 1Hz On Off Off Triple blink pattern On I2C Mode Off Blinking at 1Hz Off On No Power Off Off Off Off Power Applied No Firmware DNA Server Found CAN Mode Awaiting DNA Pinouts J1 J4 Pin 1 VIN (5-36VDC) Pin 1 VIN (5-36VDC) Pin
Connect the J2 connector of the Airspeed Sensor to the autopilot’s I2C connector using the provided JST-GH cable. Or make your own wiring harness using the pinouts detailed previously. Configure the following parameters to enable the Airspeed Sensor and select the appropriate DLVR sensor driver. Note that some parameters may vary by flight controller hardware - consult autopilot manufacturer documentation as required. Reboot the autopilot for the changes to take effect.
If bus termination is desired, move position 1 of the DIP switch to the ON position. This connects an on-board 120-ohm termination resistor between the CAN signal lines. Connect the J1 connector of the Airspeed Sensor to the autopilot’s CAN connector using the provided JST-GH cable. Or make your own wiring harness using the pinouts detailed previously. Configure the following parameters to enable the Airspeed Sensor and DroneCAN communications in general.
CAN_D1_PROTOCOL 1 CAN_P1_BITRATE 1000000 CAN_P1_DRIVER 1 Firmware Update The AP_Periph firmware on the Airspeed Sensor can be updated over SLCAN using Mission Planner. The latest firmware releases are automatically maintained by the Ardupilot firmware server. Use the “SLCan Mode CAN1” (or “SLCan Mode CAN2 if appropriate)” button in Mission Planner to enter SLCan mode. Once the CAN device corresponding to the Airspeed Sensor appears, expand the menu and choose the “Update” option.
