u/Low-Voice-887

Hello! Wondering if there's a way to fix this problem. My PCA9685 isn't communicating with my arduino and I managed to troubleshoot the problem being that the SDA connection is 'floating'(?) Sometimes it's being sensed, often times it's not, replaced the jumper wires around but it sometimes works after some wriggling but I have no idea how. I get this is a hardware issue but I wonder if there's still something I can do to fix it before having to buy a new one.

It worked okay yesterday, but today I think my error was hooking up the V+ port to the Arduino's 5V. I have since switched to VCC but yeah. I do have a 4 AA Battery pack hooked up to the PCA as an external power source.

Any advice please?