Hi everyboady can you help me please?.. I got a APM Pro clone and a BN880GPS but I got a bad compass health and i cant calibrate it.. When I disable MAG, bad compass health disapears but I still got a Compass1 99 error and no calibtration and weirdly I can see on the panel my heading moving... Even when I disable all compass parameters.. I think this APM based on APM 2.6 has a mag in but to use a external compass you might disable something on the board or do something I think.. I tried all that I found and spent a lot of time on the web to find solution but no way... Test the SCL, SDA wires has a 3.2v with GND... Here is my APM Pro
There is no mag on that board [you can see the missing chip under the misspelled "Ardupiolt" lol]
You can see the reticle moving because it is using the gyro.
You NEED a mag connected before you can calibrate it.
I've seen a LOT of APMs over the years but never one that looks like the one in the image. And so without a link to where you got it I am unable to help on how to properly connect your m8n gps/mag to it :(
ok I seem to have found the controller.
From the M8n you should have 6 wires, 4 from GPS and 2 for the i2c mag. You would connect the GPS to the GPS pins circled and the mag to the 2 pins circled. [in the attached image]
Remember the TX and RX need to be crossed that the SCL/SDA are NOT crossed.
All my wires are correctly connected... TX on RX and TX on RX, SDA to SDA and SCL to SCL.. My problem is when I upload the Rover firmware, I got a GPS lock and and a heading on my compass but when I upload Arducopter firmware I dont have GPS lock and heading at the same place... So I think I got a problem with my APM Pro, I did not know it was a clone, when I opened it it saw that... I will buy another one... But when I upload the Rover firmware I got GPS and heading and Arducopter not... Where can I donwload older firmwares?... Or someone can share his parameter file with me?..