Third Eye is an innovative wearable technology for visually impaired peoples. It is a wearable that specific for people who are blind. Using ultrasonic waves to detect the obstacles and notifying the user through vibrations and buzzer sound. Third eye for people who are blind is an innovation which helps the blind people to navigate with speed and confidence by detecting the nearby obstacles using the help of ultrasonic waves and notify them with buzzer sound or vibration. They only need to wear this device as a band or cloth.
– Buzzer: very close to an obstacle
– Led: nothing in front of you
– Vibration: getting close to an obstacle
They are suffering a lot of hardship in their daily life. The affected ones have been using the traditional white cane for many years which although being effective, still has a lot of disadvantages. Another way is, having a pet animal such as a dog, but it is really expensive. So the aim of the project is to develop a cheap and more efficient way to help visually impaired to navigate with greater comfort, speed and confidence.
My goal for this project was to explore the different effects that you can create using simple vibrator motors. It’s straightforward to connect the small vibrator motors to wearable projects, and it is an excellent way to only notify the user without revealing information to other people.
Something that has always been on my mind is the warning systems that are available on cars. Especially when dealing with projects that are very visual base, I feel that vibration would be an excellent replacement using other senses to notify the users with warning signals.
We followed the instruction step by step and uploaded the “Blink” example code onto the Arduino micro board, examining performance of micro vibrate motor. We initially use one micro vibrate motor and placed the board on the table. We held our finger on top of it and feel the strength of the vibration. Since we were going to design some wearable using micro vibrate motor. We decided to place the motors on our skin instead. Experiment one was a little bit tricky. We cannot find the right pin for its connect. One of us used Arduino Uno and the rest of us used Arduino Micro. Though we used same example code but we need to use different pins for the connector. We spent some time to test the pins and make it work.
We also tried different frequency of the blink by changing the delay time of the code. I was wondering if we could change the strength of vibration which could be another signal of the wearable we designed. We then tried another example code, Fade example, on the Arduino. We notice this code changed the strength of vibration.
(Circuit diagram for Arduino Uno)
(Circuit diagram for Arduino Micro)
(Experiment 1 video)
For the second experience, we were supposed to test the three motor together. We made an array of motors. When the first experiment was successful, it was not difficult to add more motor. Use a different pin and then copy and paste the existing code. We recorded a small video, which is believed to be quite strong for human body. During this period, I consulted omid about a question about library. This example code shows all (117) modes of vibration in the library. If we want to use a specific effect in this library, we need to change the example code.
We ran through all the different vibration formats the library had. We want to explore different types of vibration for further wearable design as a mean of sending different messages.
(Circuit diagram for Arduino Uno)
（Serial monitor_Different effect)
(Experiment 2 video)
Now a days there are so many instruments and smart devices for visually impaired peoples for navigation but most of them have certain problems for carrying and the major drawbacks is those need a lot of training to use. I noticed that hands work as blind people’s eyes.
They use their hands to perceive the world. In daily life, they often raise their hands and shake from side to side to see whether there is an obstacle in front of them. The design principle behind working stick is to extend the blind people’s arms. This device aims to work as blind people’ walking stick.
- Jumper wires
- Arduino Micro
- Vibrating Disk Motor
- Ultrasonic Sensor
- Connect the +5V and GND of Arduino UNO to the breadboard.
- For LED: Connect the cathode (Shorter pin of LED) to ground and the Anode (longer pin of LED) with a 330 or 220 ohm resistor.
- Connect the second pin of resistor with pin 6 of the Arduino as shows in schematics.
- For Buzzer: Connect the Positive terminal with pin 8 of Arduino and negative terminal to GND.
- For Ultrasonic Sensor: Connect the VCC and GND . Connect the Trigger pin to pin 12 and Echo pin to pin 13 of Arduino.
- In experiment one, we cannot find the right pin for its connect. One of us used Arduino Uno and the rest of us used Arduino Micro. Though we used same example code but we need to use different pins for the connector. We spent some time to test the pins and make it work.
- We recorded a small video, which is believed to be quite strong for human body. During this period, I consulted omid about a question about library. This example code shows all (117) modes of vibration in the library. If we want to use a specific effect in this library, we need to change the example code.
(Ultrasonic Sensor Alarm)
- Work on the fabrication
- Have two vibration motors