Incorrect setup graphic?

[jthatch12]

Hey, I've been trying to get this to work on my BBB. I've setup my circuit like 40 times by now in the same fashion shown on your git but everytime I run the program it executes as the following

• ./hcsr04

  Initializing PRU
  Executing HCSR-04 code
  1: Distance = 4.16 cm
  2: Distance = 4.16 cm
  3: Distance = 4.16 cm
  4: Distance = 4.16 cm
  5: Distance = 4.16 cm
  6: Distance = 4.16 cm
  7: Distance = 4.16 cm
  8: Distance = 4.16 cm
  9: Distance = 4.16 cm
  10: Distance = 4.16 cm
  11: Distance = 4.16 cm
  12: Distance = 4.16 cm
  13: Distance = 4.16 cm
  14: Distance = 4.16 cm
  15: Distance = 4.16 cm
  16: Distance = 4.16 cm
  17: Distance = 4.16 cm
  18: Distance = 4.16 cm
  19: Distance = 4.16 cm
  20: Distance = 4.16 cm
  PRU Disabled.

Any ideas what I might be doing wrong?

[luigif]

The picture is correct, so if you set up things according to the picture it should work.
Maybe you have a faulty sonar module?

[jthatch12]

I got the circuit to work, I have 5 sensors and they all perform the same.
The circuit seems to not work when pointing forward on a breadboard. Seems
to only function when pitching slightly upward

On November 5, 2014 12:34:49 PM luigif notifications@github.com wrote:

The picture is correct, so if you set up things according to the picture it
should work.
Maybe you have a faulty sonar module?

---

Reply to this email directly or view it on GitHub:
#2 (comment)

[luigif]

The sensor generates a wave that expands also in the vertical direction.
If you position the sensor on a breadboard over a table it will get the vertical reflection from the table before any other reflection.
You might want to put the breadbord over a book or, as you did, just point the sensor a little bit upward.