SiK 라디오
SiK radio is a collection of firmware and tools for telemetry radios.
PX4 is protocol-compatible with radios that use SiK. SiK Radios often come with appropriate connectors/cables allowing them to be directly connected to Pixhawk Series controllers (in some cases you may need to obtain an appropriate cable/connector). 보통 기체와 지상통제장치 간에 한 쌍의 장비가 필요합니다.
SiK 라디오는 다양한 범위와 폼 팩터를 지원하는 다양한 제조업체/가게에서 구매가능 합니다.
공급 업체
- Holybro Telemetry Radio
- HolyBro SiK Long Range
- RFD900 Telemetry Radio
- ThunderFly TFSIK01 Telemetry Radio
HKPilot Telemetry Radio(Discontinued)3DR Telemetry Radio(Discontinued)
Setup/Configuration
지상통제장치에서는 무선통신장치는 플러그앤플레이 방식의 USB로 연결합니다.
The vehicle-based radio is connected to the flight-controller's TELEM1 port, and typically requires no further configuration.
Link Throughput
The serial baudrate says little about what a SiK link carries over the air. At 57600 baud with the common 64 kbps air rate, a radio carries roughly 2000 B/s with error correction enabled and about twice that without.
MAV_0_RATE caps what PX4 sends on TELEM1. Setting it above what the link carries does not make telemetry faster: the radio drops packets instead, which shows up as MAVLink loss and makes parameter and log downloads slow or unreliable. Lower it if you see loss.
Two AT commands report the radio's own limits: ATI5 lists the settings, including S2:AIR_SPEED and S5:ECC, and ATI6 reports max_data_packet_length - the largest MAVLink packet the radio sends in one piece. Error correction roughly halves both the throughput and that packet size.
펌웨어 업데이트
Hardware sourced from most vendors should come pre-configured with the latest firmware. 구형 하드웨어에서 MAVLink 2 추가하기 위하여, 새 펌웨어로 업데이트하여야 합니다.
You can update the radio firmware using QGroundControl: QGroundControl User Guide > Loading Firmware.
고급 설정
The Development section has additional information about building firmware and AT-command based configuration. 개발자가 아닌 경우에는 이 작업을 수행하지 않아도 됩니다.