An Arduino project implementing a security alarm system featuring PIN code access via a 4x4 keypad, status updates on a 16x2 ... drawn schematic image in your repository and link it here for clarity).

As this happens, the transistor T1 (as shown in the schematic) stops working and transistor T2 starts working and starts off the buzzer. Sensitivity of the sensor can be set by changing the variable ...

Have you ever wanted to build your own IoT-based Weather Monitoring Station? Imagine monitoring real-time temperature, humidity levels,… ...