I recently blew up the 5V 2A PSU that came with my Pi. Since then, I am using my phone's charger, 5v 1A to run my Pi. And while it runs fine most of the time, I see the undervoltage warning, while it boots up, and also when I am running my Image processing algorithm, which I made as a part of my project.(heavy CPU/GPU usage at that time)
I tried running the Pi of batteries, made a 7.8V pack connected it to a 5V 3A UBEC. I still get the undervolt warning.
I tried another 5V 2A adapter but that also gave me the undervolt warning.
What I'm worried about is, can being undervolt decrease the Pi's performance? If yes, how do I counteract it? I increase the current or the voltage?
Current Pi Setup- Raspberry Pi 3 => 1 Arduino UNO connected Via USB, Standard USB Keyboard and Mouse, 1 Raspberry Pi camera module, output to HDMI display at 720p.
Final Pi Setup (for my project) - Raspberry Pi 3 => 1 Arduino UNO connected, 1 Raspberry Pi camera module connected, VNC Server running in the background. At least 1 device accessing the terminal via SSH, Image Processing script running continuously