It's the arduino code for a smartphone controlled spider robot.
You can download the STL files from https://www.thingiverse.com/thing:4815137
I have used the following components in this project: a) Arduino Nano (Required) b) Nano 328P Expansion Adapter Breakout Board IO Shield (Required) c) HC05 Bluetooth Module (Required) d) SG90 Mini Servo 12 pieces (Required) e) Buck Converter Lm2596 f) Lithium Ion Battery 2 pieces g) Leds * 2 piece h) Jumper Wires
To control this using android device, you will need the following app: https://play.google.com/store/apps/details?id=braulio.calle.bluetoothRCcontroller