CAD Model
Central Disk – part of mobile that holds and supports the rotating disk, device supports and Arduino.
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-24-at-5.21.42-PM-1024x777.png)
Pipe Holder – holds the PVC pipe supports in place and allows for attachment to central disk as well as 90 degree adjustment to fit crib.
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-24-at-5.22.25-PM-853x1024.png)
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-24-at-5.22.54-PM-1024x739.png)
Clip – attaches entire device to crib to maintain structural stability.
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-24-at-5.24.00-PM-1024x719.png)
Below are images of the parts on the printer bed prior to 3D printing
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-24-at-5.16.45-PM-1-1024x788.png)
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-24-at-5.16.31-PM-1024x788.png)
Arduino Models
Rotating Servo Motor
This part of the ArduinoUNO uses a High Sensitivity Sound Sensor to detect cries from a baby, times the length that the baby cries, and after a certain amount of time turns on the motor to rotate the mobile. Pictured below is the pin model for this model.
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-26-at-6.42.42-PM-1024x679.png)
Pictured below is the code used to rotate the servo motor in response to sound.
![](https://sites.tufts.edu/babysoothers/files/2022/04/Image-4-26-22-at-6.14-PM.jpg)
Included below is a video of how it works!
Twinkling Lights
This part of the ArduinoUNO uses a High Sensitivity Sound Sensor to detect cries from a baby, times the length that the baby cries, and after a certain amount of time turns on white and blue twinkling lights. Pictured below is the pin model for the sounds responsive twinkling lights.
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-27-at-8.49.09-AM-1024x700.png)
Pictured below is the code used to turn on twinkling lights in response to sound.
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-26-at-6.53.14-PM-1024x359.png)
![](https://sites.tufts.edu/babysoothers/files/2022/04/Screen-Shot-2022-04-26-at-6.53.34-PM-1024x657.png)
Included below is a video of how it works!
Sources
Below we have listed the videos and websites that helped us make our mobile.
Final Prototype
![](https://sites.tufts.edu/babysoothers/files/2022/04/IMG_8131-768x1024.jpg)
Below is a video of the prototype spinning the toys with a clap
Below is a video of the prototype spinning the toys with a baby’s cry