Have been having a lot of trouble using the Sonar so decided to do a power filter and shielded cable. DId the cable with copper tape and shrink tube and have a ground plug going to the APM2 ground. Added a 100 micro-farad cap and a 100 ohm resistor to the sonar unit per the Maxbotics site.
Behavior is much improved. A couple of questions though.
1) Does it matter where on the APM2 I go to ground with the cable shield? I am powering the APM2 off its own BEC and the motors off the ESCs. Currently I am taking the ground to a ground pin in the AN row of connectors.
2) Does the attached graph look right? The first part of the flight appears to be pretty tight between baro and Sonar, but partway through it gets very weird looking. Any ideas?
Replies