so I have a problem with my project with I cannot seem to solve alone.
I have a Nano with multiple things attached, a Pump via a Relay, a 1.77" TFT Screen, Humidity and Temperature Sensors as well as a moisture Sensor and last but not least a Ultrasonic sensor, which is problematic at the moment.
The Ultrasonic sensor is constantly reading 0 as distance while all the other Sensors and the Screen (which I run off 2x 5v (instead of 3,3V for the backlight, it was too dim!) work perfectly fine.
It all worked fine until this morning and I don't know what I changed. The wiered thing is that when I unplug the 5v vcc from my TFT screen, suddendly the Ultrasonic sensor reads 16 cm, which is not exactly right but close to being it. As soon as I plug the 5v vss pin back to my + line on my breadbord the sensor goes back to 0 values. As I said, other Sensors work fine and this one did aswell until now.
The Nano has only 1x 5V and 1x 3.3Volt pins. I don't know anything about current so I am thinking maybe I cannot draw enough current from that single 5V Pin to provide current for 8 consumers..
I have one pin from 5V to my positive line and hooked the rest up on the line itself of the breadbord exept one connection wich goes to my Screen VCC, hooking it up to the + line doesnt cut it. Maybe the Jumper wire between arduino and + line is the bottleneck?
Thank you for any help, I have no Idea what I am doing...
Edit: I shoud add that I am powering the whole thing with one USB atm.