LibrePilot Forum

General Category => General Discussion => Topic started by: Brunosanta on May 01, 2017, 10:23:13 am

Title: Revolution board with 10 euros GPS + internal mag - perfect
Post by: Brunosanta on May 01, 2017, 10:23:13 am
Hello guys, I wasn't happy to hear that the mag internal didn't work and the cheap GPS from banggood wouldnt work well. I dedicated the last week to tune and test it and I got a dead solid fix for absolute position as well as the Return to base with auto landing within like 30 cm off . If anybody is interested to know the steps I did let me know! I could also make a video.
my quad: emax motors, cheap 12amps kingkong esc, Revolution board from aliexpress (removed the capacitor cause of Baro variation now its perfect), 1800Mah 65C zop power, and a few little tricks to make sure all worked! I am so happy
Title: Re: Revolution board with 10 euros GPS + internal mag - perfect
Post by: Jhinta on May 01, 2017, 12:03:56 pm
Quote from: Brunosanta on May 01, 2017, 10:23:13 am
Hello guys, I wasn't happy to hear that the mag internal didn't work and the cheap GPS from banggood wouldnt work well. I dedicated the last week to tune and test it and I got a dead solid fix for absolute position as well as the Return to base with auto landing within like 30 cm off . If anybody is interested to know the steps I did let me know! I could also make a video.
my quad: emax motors, cheap 12amps kingkong esc, Revolution board from aliexpress (removed the capacitor cause of Baro variation now its perfect), 1800Mah 65C zop power, and a few little tricks to make sure all worked! I am so happy

witch cap did you removed? also witch frame , also pic of setup, and sure why not , it will help others
Title: Re: Revolution board with 10 euros GPS + internal mag - perfect
Post by: f5soh on May 01, 2017, 02:00:01 pm
Interesting, but not sure is reliable.
What fusion algorithm did you use ? 

@Jhinta
Information about capacitor removing when baro is noisy can be found here:
https://librepilot.atlassian.net/wiki/display/LPDOC/Altitude+Hold#AltitudeHold-Hardwareissues
Title: Re: Revolution board with 10 euros GPS + internal mag - perfect
Post by: Jhinta on May 01, 2017, 09:29:23 pm
Quote from: f5soh on May 01, 2017, 02:00:01 pm
Interesting, but not sure is reliable.
What fusion algorithm did you use ? 

@Jhinta
Information about capacitor removing when baro is noisy can be found here:
https://librepilot.atlassian.net/wiki/display/LPDOC/Altitude+Hold#AltitudeHold-Hardwareissues

that shows only openpilot design board not the clone from china

see hope its correct
measured all caps around it , that is the only one that has 0 ohm on that pin
Title: Re: Revolution board with 10 euros GPS + internal mag - perfect
Post by: f5soh on May 01, 2017, 10:07:46 pm
Without the scale the scope show nothing... What's the delta ?
Title: Re: Revolution board with 10 euros GPS + internal mag - perfect
Post by: Jhinta on May 02, 2017, 11:56:54 am
Quote from: f5soh on May 01, 2017, 10:07:46 pm
Without the scale the scope show nothing... What's the delta ?

correct image
Title: Re: Revolution board with 10 euros GPS + internal mag - perfect
Post by: f5soh on May 02, 2017, 04:40:36 pm
Short term spikes are around 0.6m, no issue.

This is the raw reading from sensor, no filtering.