![ldr - Arduino analog pin doesn't read correctly without connecting to gnd and Vcc of arduino - Electrical Engineering Stack Exchange ldr - Arduino analog pin doesn't read correctly without connecting to gnd and Vcc of arduino - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/cL8ag.png)
ldr - Arduino analog pin doesn't read correctly without connecting to gnd and Vcc of arduino - Electrical Engineering Stack Exchange
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
![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)