Parallelogram Robotic Arm

This is a parallelogram 3D printed robotic Arm that has a suction cup at the edge to grab an object. Here is a test video: https://youtu.be/MzL_UEFqbfA

I used this robotic arm in this "Sushi Maker" project. https://youtu.be/pPuZfKiCb-4

Parts list:
- 4-40 1/2 screws
- \#4 nuts
- Servo Motor TowerPro SG-5010
https://www.adafruit.com/product/155
- PCA9685 16 channels PWM/Servo driver
https://www.adafruit.com/product/815
- Suction cup
https://www.amazon.com/SMC-Vacuum-Pad-Bellows-10mm/dp/B00DD87WXE
- Tube
- Water Pump (RS-360SH)
http://a.co/d/hSf7aPX

[Update] I also included the Arduino code we used in this project:)