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
You need to be a member of diydrones to add comments!
Replies
Hi everybody,
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?..
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.
38148-1.jpg
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 :(