To avoid obstacles a HC-SR04 Ultrasonic sensor mounted on a SG90 Servo continuously scans the area. Manual control is by a GUI implemented with a Bluetooth HC-05 Module and the BlueDisplay library.

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close proximity sensor. As you can ...

Abstract: This research work presents a novel approach to interact with a Bluetooth speaker through hand gestures, employing an Arduino Uno microcontroller, APDS-9960 gesture sensor, HC-05 Bluetooth ...

Our kit includes the Maker Uno RP2040 itself, four Grove to jumper cables, a USB-A to USB-C cable, a soil moisture sensor with one Grove cable, an HC-SR04 ultrasonic sensor with a Grove cable, a SG90 ...

The Arduino is connected via USB-cable or Bluetooth with your smartphone / tablet, where the BlueDisplay app renders the GUI. GUI callback, touch and sensor events are sent back to the Arduino, where ...

After uploading the code to Arduino board (Board1), connect HC-06 Bluetooth to CON4 and sensor digital output to CON3. Mount the disc encoder wheel on the shaft of the DC motor. Place the disc encoder ...

Now in the loop function of the code, we will read the data coming serially from the HC-05 Bluetooth module and check if they are corresponding to the lock or unlock command. In our program logic if ...

It is built around Arduino Uno board (Board1), Bluetooth module HC-05, temperature sensor LM35 and a few other components. - Advertisement - Fig. 2: Circuit diagram of the Android app for temperature ...