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Summary of Contents for STEFLY LARUS
- Page 1 LARUS Gliding Sensor Unit Installation Manual and Operating Instructions Version 1.41 June 2024 info@stefly.aero www.stefly.aero SteFly is a registered trademark used by CoTexx GmbH, 86565 Gachenbach, Germany LARUS Gliding Sensor Unit Manual Version 1.41...
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Page 2: Table Of Contents
5.4.1 5.4.2 Display Current Sensor Values using sensor.readings ..............12 ......................13 NITIAL PERATION AND UNCTION ............................ 14 OFTWARE UPDATE OPERATION ............................14 MAINTENANCE ..........................15 TROUBLESHOOTING ......................... 16 TECHNICAL DATA ..........................18 LARUS Gliding Sensor Unit Manual Version 1.41... -
Page 3: Preliminary Remarks
1.2 Limited Warranty The LARUS unit as well as its accessories are warranted to be free from defects in materials or workmanship for two years from the date of purchase. Within this period, CoTexx will, at its sole discretion, repair or replace any components that fail in normal use. -
Page 4: Safety
OpenVario or a Bluetooth-enabled device with XCSoar. LARUS sensor unit as well as the GNSS antenna(s) shall be installed in the inside of the fuselage. This gliding sensor unit is an additional feature to supply glider pilots with accurate information about wind, vertical air movement as well as additional attitude of the aircraft. -
Page 5: Product Description
Bluetooth-enabled device like a smartphone with XCSoar / OpenSoar 4.2 Design and Function LARUS is a sensor unit specially designed for gliders by the LARUS project team led by Prof. Dr. Klaus Schäfer, Horst Rupp and Maximilian Betz. The hardware is licensed accordingly to... -
Page 6: Can And Rs232 Ports
4.3 CAN and RS232 Ports RS232 GND (internally connected) GND (internally connected) RS232_1_RX CAN Low RS232_1_TX CAN High RS232_2_RX RS232_2_TX VCC [9-28V DC] (internally connected) VCC [9-28V DC] (internally connected) LARUS Gliding Sensor Unit Manual Version 1.41... -
Page 7: Status Leds
LED ERROR: off in normal operation 5 Installation LARUS needs to be protected by an external fuse (500 mA to max. 3A) like it is common practice for all electric devices in aviation. If LARUS gets its energy from another main instrument (e.g. OpenVario) via USB, CAN or RS232, please make sure that the main instrument is protected by an external fuse. - Page 8 We recommend keeping the LARUS sensor unit as far away as possible (at least 20 cm), especially from loudspeakers and magnets (often contained in GPS / GNSS antennas, simply check with magnets).
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Page 9: Installation Orientation
Nevertheless, we recommend selecting the orientation with regard to the longitudinal axis of the aircraft during assembly according to the coordinate system printed on the LARUS housing. Ideally, the LARUS sensor unit is also mounted in such a way that it is roughly horizontal in normal flight. 5.3 Hardware Installation Process The scope of delivery contains 2 3D-printed fastening clamps for the sensor unit, which may be used to fix the box to the fuselage in a position and orientation as described above. -
Page 10: Sd Card
Should it be necessary to reset the LARUS configurations to the factory settings, proceed as follows: 1. Remove the micro SD card from LARUS and connect it to a computer (via an SD card adapter) 2. Download the "sensor_config.txt" file from Larus GITHUB page https://github.com/larus-breeze/sw_sensor/tree/master/configuration... - Page 11 The file contains any combination of the following configuration lines (parameters that are particularly important are marked in yellow, additional parameters required for LARUS Dual-GNSS are marked in blue): Configuration Line with Description Standard Value 01 SensTilt_Roll = 0 Rotation of the sensor around the roll axis (sensor - longitudinal axis) in degrees;...
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Page 12: Display Current Sensor Values Using Sensor.readings
To display the values, proceed as follows: 1. Remove the micro SD card from the LARUS housing (LARUS and OpenSoar do not need to be turned off) 2. Open the SD card folder on a computer, rename the file “sensor.readings_disabled” in sensor.readings and save it on the micro SD card... -
Page 13: Initial Operation And Function Test
5.5 Initial Operation and Function Test For initial operation please follow these steps: 1. The LARUS housing is mounted in the aircraft as described in chapters 5.1 - 5.3 2. Connect the GNSS antenna(s) to the sensor unit. For LARUS DUAL-GNSS: connect the front antenna to GNSS1, the rear antenna to GNSS2. -
Page 14: Software Update
The LARUS team is continuously improving the software. New software versions are released here: https://github.com/larus-breeze/sw_sensor/releases For updates until sw_sensor version 0.3.0 it was necessary to connect a computer to LARUS STM port via USB cable. Please see the manual “STM 32 Update” published on our webpage https://www.stefly.aero/product/larus_glider_sensor/... -
Page 15: Maintenance
• It is recommended to set the connected IGC logger, e.g. Flarm, to device A and LARUS to device B, because then the IGC logger height is displayed in XCSoar/ OpenSoar. In competition flights, only the altitude recorded by the IGC logger is used for task evaluation. -
Page 16: Troubleshooting
“D-GNSS Heading” is roughly the too high during straight heading you expect. If it is 180° wrong, flight and correct during then the antennas at the Larus box circling must be interchanged. For Larus Essential: The LARUS sensor must be positioned... - Page 17 Wrong setting in OpenSoar Check: Config / Wind / Wind setting: “External wind” on, “ZigZag wind” off constantly 0° / XCSoar and “Circling wind” off Software bug in sw_sensor Update sw_sensor version version 0.3.1 LARUS Gliding Sensor Unit Manual Version 1.41...
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Page 18: Technical Data
GNSS-Antenna – SMA normal polarity microSD pressure connectors operating temperature °C -30 to +60 operating rel. humidity 0 - 95 material housing black anodized aluminium cable length GNSS antennas 4,0 (LARUS Essential) 5,0 (LARUS Dual-GNSS) LARUS Gliding Sensor Unit Manual Version 1.41...
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