Use value 14 in the RNGFND_PIN. that worked for me.
thank you :)
I'll try it out soon and report my result.
......whilst some pics
today it's normal again , quick connection to the DIY forum :) - perhaps issues in DE 'cause of the rainstorms .....
ok, today i can inform that the module works now!
Pin 14 did it.
Many thanks to Juan - you lead me to success :D
(YAY!!! ) :D
I also want to connect HC_SR04 with Pixhawk.
The HC-SR04 that I have has 4 pins : 5V Supply, Trigger pulse Input, Echo pulse output, Ground.
Can you please help me understand how I can connect this with pixhawk?
Did you make any changes in ardupilot or HC_SR04 driver's code also to make it work?