I am working on a hexacopter build for a school project (specs listed above). I have downloaded Mission Planner 1.3.68 build 1.3.7105.26478 and have followed the steps on there to install Arducopter V3.6.11 onto my Pixhawk. I was able to do all the initial calibrations with the accelerometer, compass, and radio.
However, Mission Planner states GPS: No GPS. I have a Holybro Micro M8n GPS module installed. I had to splice the 6 pin cable from the GPS unit into a 6 pin connector plugged into the Pixhawk GPS port, and a 4 pin connector plugged into the Pixhawk I2C port. I currently have the following connections:
GPS Connector:
Holybro GPS GND ------> Pixhawk GPS Pin 6 (GND)
Holybro GPS TXD ------> Pixhawk GPS Pin 2 (TX out)
Holybro GPS RXD ------> Pixhawk GPS Pin 3 (RX in)
Holybro GPS 5V -------> Pixhawk GPS Pin 1 (VCC)
The Pixhawk’s light if flashing yellow and apparently it should be flashing blue if the GPS is searching for satellites. The Holybro Micro GPS has a solid green light and a flashing blue light.
From what I have searched, the GPS should work automatically without enabling it with any settings. Is this correct? Can anyone help me resolve this issue? Thank you.
That was the trick! Thank you for your help. I swapped the RX and TX pins and the GPS now works for the first time. Its odd that the stated pinouts for the GPS and the Pixhawk do not function.
I’m having a similar issue: GPS: No GPS but I am using a Spektrum Dx8 radio with my receiver plugged into the dsm/spkt port on Pixhawk 4.2.8
I am using a Ublox M8N GPS/Compass unit.
I have no idea if I’m doing something wrong or if the Pixhawk/GPS are not working correctly. I have no way to test it.
Otherwise the system seems to be working OK. When I pick up the drone the Heads up Display updates accordingly.
Thats enlightening! I will give that a try. The connector on the gps unit I haven now is a 5 pin connector and the socket is a 6 pin socket. I had not looked at it that closely before, since I assumed that what I was getting was compatible with the Pixhawk I have.
I will have to try to find a 6 pin plug.
Thank you!
At least you didn’t cause any damage because the way you jammed the 5 pin connector in left the +5V pin open.
BTW- Your comment about the system otherwise working OK because the HUD is moving is not definitive. The HUD will move with no GPS or compass connected at all from the Z-axis gyro. If upon boot the HUD shows the craft pointing North every time regardless of it’s actual heading then the compass is not working.
I found a 6 socket connector and made the changes as per the video you linked me to and the gps unit lit right up and I am no longer getting the GPS: No GPS warning I was getting before! Yes I’m klutzy as they come but your assistance is greatly appreicated.
