I am trying to follow TCIII instructions for how to connect dual sonars to a PIXhawk. First of all in MP the sonar options are gone and now we have RANGEFINDER. According to TCIII the pins are 12 and 13 ( 3.3 v ADC) but the MP wants to use pin 15 ("airspeed") !
Which is correct ? I put in pins 12 and 13 but no signal. I can confirm I have analog voltages on the pins ( 0.6 to 3.3V)
Actually I have made a pseudo-sonar. I found the Maxbotix sonars are too slow and need to be triggered properly to avoid interference. Instead I took a Hokoyo laser rangefinder and used an Arduino DUE to output 2 analog voltages corresponding to obstacle distance left and right of the laser rangefinder. Then I could just feed these into the PIxhawk and use the built-in obstacle avoidance routines.
Replies
Hi heliboy,
I had no trouble using the 3.3vdc ADC connections for my Maxbotix sonars so I do not know why you are having an issue other than you are not using sonars.
Yes, the Sonar parameters have had name changes, but the concept is still the same.
Regards,
TCIII AVD
I got it to work. At least the first sonar. One of the issues now is - I can see and graph the first sonar but there appears to be no way to see the second sonar ! I cannot seem to get the CLI to work properly on the latest MP. It connects but then just "waiting for reboot"
Since I have your attention do you know:
1. Has anybody tried piksi with ardurover ? 3D drones claims that it is now integrated and I am wondering if it worth plonking down 1G.
2. Does MP now have higher resolution waypoints that can actually use cm level GPS ? I heard it was in the works.
Thanks.