Week 3: Finalizing the Ultrasonic Sensor Glasses

Week 2 witnessed the finalization of the circuit and the programming of the Arduino, our next goals were:

1. Solder  wires to the components.
2. Connect the wired components together to form the circuit made last week shown in figure 1.
3. Install the components on the 3D printed frame.

Figure 1. Diagram of 3 sensor, 2 speaker, and an Arduino Nano circuit

To add two more sensors to the existing frame, two sensor holder attachments were designed and printed. The design shown in figure 2 was made with Fusion360

Figure 2. 3D design of sensor holder attachment 

This week's accomplishments:

 The glasses' components were soldered together and fully operational. This was done by:

1. Soldering wires to the components, with each component having its own individual wires connected to it.
2. The wired components were then connected together as a whole unit passing through the Arduino and soldered together.
3. The circuit was successfully installed on the 3D printed frame as shown in figure 3. The speakers were fixed to the frame with the use of hot glue, as well as using electrical tape to organize and hide the wires.

Figure 3. Finalized ultrasonic sensor glasses

The issue that we encountered:

    The only issue that was encountered this week is that the speakers’ wires were short, thin and sensitive to movement. Consequently, while soldering a wire extension, the original wire fell off its place on the speaker.

How the issue was solved:

    The problem was solved by soldering a larger and stronger wire to the speaker as well as increasing the amount of solder at the joint making it harder for it to move from its position. The speaker was then tested to ensure that the wire is connected correctly and functions properly. After ensuring its functionality, the speakers were finally installed on the glasses frame.