That's the seccond time i visit this forum. Now i am smarter then before. This is my first arduino project - selfriding robot that avoides obstacles. SETUP: -4WD platform with 4 DC motors. -Romeo V2.2 board. -Servo SG90 -distance sensor - ultrasonic HC-SR04 I downloaded the code from similiar project and modified this on my purpose, especialy for my sensor. This is quite strange, when i connect my romeo board via USB and upload same code with 5V, everything starts quickly and another time when i connect board also via USB ---- robot starts moving slowly back (servo doesnt work) and stops. The White diode on the board with "L" name lights. And the same thing is when i connect 8 x 1,5V AA battery which are connected in series. Here's the photo of my robot: http://imgur.com/a/6Y6w4 and code below https://github.com/TruePatrick/ROMEO-V2
:EDIT: - video here how's it looking - https://www.youtube.com/watch?v=SoNNOrAiGtc - check out my last answer, i have almost fixed this.