![Using multimeter to measure power consumption via USB or Battery packs - Project Guidance - Arduino Forum Using multimeter to measure power consumption via USB or Battery packs - Project Guidance - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/9/8/c/98ca1a421ce8c956ef96bd99228e97c44eab71a4.png)
Using multimeter to measure power consumption via USB or Battery packs - Project Guidance - Arduino Forum
Arduino Projects - Circuit Construction First make the circuit connection as shown in fig1.1. The 1st Pin(Vcc) of Bluetooth(HC05) is connect to +5v of Arduino Uno and 10th pin(GND) to Arduino Uno
![Are these normal? 5V pin got only 4.76V and 3.3V pin got only 3.15V - Microcontrollers - Arduino Forum Are these normal? 5V pin got only 4.76V and 3.3V pin got only 3.15V - Microcontrollers - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/5/4/2/5424180733c8862d13ebc17eaf6687f71feab796.png)
Are these normal? 5V pin got only 4.76V and 3.3V pin got only 3.15V - Microcontrollers - Arduino Forum
![Powering up via 5V I/O 4. Using batteries greater than 5V connected in... | Download Scientific Diagram Powering up via 5V I/O 4. Using batteries greater than 5V connected in... | Download Scientific Diagram](https://www.researchgate.net/publication/334560744/figure/fig6/AS:782311155048449@1563528922284/9-Powering-up-via-5V-I-O-4-Using-batteries-greater-than-5V-connected-in-the-Vin-pin-of.png)