Digital Distance Meter

I create a digital distance meter on SolidWorks. I have added all.STL file and Solidworks file. These solid bodies were drawn on solidworks2016. If you change anything on solid parts, you must have Solidworks 2016 or higher. Distance meter has (+/-)1cm error. At the same time, I have shared all Arduino codes that I wrote and this code is quite detailed you can change it as you wish. Have fun!!!!!

Part List:

1 x Arduino Uno
1 x HC-Sr04 Ultrasonic Sensor
1 x 9v battery and battery connector cable
1 x 5v laser diot
1 x 0.91" I2C Oled screen

Connections:

For screen
VCC to 5v pin
Gnd to Gnd pin
SCL to A5 pin
SCA to A4 pin

For sensor
Trig to D12 pin
Echo to D7 pin
VCC to 5v pin
GND to Gnd pin