I printed up a mount that I thought would improve receiver sensitivity, but it appears the fixture is "ringing" with every ping and the max measured distance is suddenly 6 cm. Before inserting the sensor in the mount, it appeared to be working great, up to 235 cm. I assume the fixture is "ringing" because if I squeeze the cone tight with my fingers, the ranging starts working again. So I put caulk all around the cone to "quiet" it, but that didn't work at all.
Anyone got an idea for a mechanical fixture for this ultrasonic sensor?