If I make connections like you see in picture below, will it work? Will I damage ESP or HC-SR04?
As I know;
HC-SR04 (VCC) -> 5V
ESP8266 (VCC) -> 3.6V
ESP8266 (RX/TX) -> has 5V tolerance ?
I have not taken into account the currents that will each pin draw. So, is everything OK?
I'm not good at this stuff, so I'll appreciate it if you guys give me advice
Most of you suggest to use voltage regulator instead of external AA batteries. However, I have already ordered one but it takes too much time (nearly week) to get, due to delivery-shipping issues. So, I want to work on the coding part of my project.