anon31534460 November 29, 2020, 12:47am 4. Hi, There have been issues in regards to GPS and compass in early versions of arducopter 4.0. see also: ardupilot/ReleaseNotes.txt at Copter-4.0 · ArduPilot/ardupilot · GitHub. My understanding is that improvements have been made in 4.0.4 and further in 4.0.5. No GPS fix , nor no HDOP ,using SITL - hint welcome. ArduCopter Copter Simulation. 11115 ( DragonWars) February 15, 2017, 3:38pm 1. I am using an old version of ardupilot 3.2.1. I am trying to use the SITL , I am able to get the console , the map , and also connect it to Mission Planner. but the hdop is at zero , no drone on screen , and no GPS Now, after plugging here 3 into can 1 I get no fix and no satelites. Double blinking yellow leds. I set all the config as described in manual (see attached). Can d1 and p1, gps type set to 9, leds turned on. If click Mavlink-CAN1 I see com.hex.here. Mode is operational, version is 1.8.AB157ABD, sw crc is 1B4F9DE63FD6955. amilcarlucas (Amilcar Lucas) March 15, 2021, 9:45am 5. HDOP is measured from the GPS unit. There is no Bug, and even if there is, high PDOP is also a problem. You can not fix interference with a software fix. Do not disable pre-arm checks, unless you want the copter to crash. Yes it can. This is a new build APM 2.6, Hexacopter, with Arducopter 3.2 software. GPS is a uBlox NEO-M6. The problem; It is proving very difficult to get past the “PreArm: High GPS HDOP” warning - even though MP displays a solid 3D fix with 7 satellites (HDOP 2.37 or worse). I am reluctant to change the default GPS_HDOP_GOOD parameter from the default Open Mission Planner’s INITIAL SETUP | Mandatory Hardware | Radio Calibration screen. Click on the green “Calibrate Radio” button on the bottom right. Press “OK” when prompted to check the radio control equipment is on, battery is not connected, and propellers are not attached. Move the transmitter’s control sticks, knobs and If you connected the GPS after powering on the cube then it won’t recognize it. 1 Like CLaaW (Yiğit) January 19, 2023, 11:08am I have a question about the connectivity that Mission Planner provides in a RTK setup (using Here v1 rover and base, with Pixhawk 2.1; all components running the latest software). Current situation: In the “Inject GPS” dialog I can successfully connect to a NTRIP caster (a vrs network realtime solution), with my credentials. Alternatively, I can instead successfully connect the rover to bQsGU.