The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 c
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
![Different Ways to Power Arduino Board - How to Power Your Arduino Board with Different Power Options Different Ways to Power Arduino Board - How to Power Your Arduino Board with Different Power Options](https://circuitdigest.com/sites/default/files/inlineimages/u4/Arduino-Vin-Pin.jpg)
Different Ways to Power Arduino Board - How to Power Your Arduino Board with Different Power Options
![Different Ways to Power Arduino Board - How to Power Your Arduino Board with Different Power Options Different Ways to Power Arduino Board - How to Power Your Arduino Board with Different Power Options](https://circuitdigest.com/sites/default/files/field/image/Power-Arduino-Board.jpg)
Different Ways to Power Arduino Board - How to Power Your Arduino Board with Different Power Options
![The connection between Arduino Uno and SCD30. Red cable is Vin, orange... | Download Scientific Diagram The connection between Arduino Uno and SCD30. Red cable is Vin, orange... | Download Scientific Diagram](https://www.researchgate.net/publication/351720479/figure/fig1/AS:1025592770179072@1621531779446/The-connection-between-Arduino-Uno-and-SCD30-Red-cable-is-Vin-orange-is-GND-green-is.png)