Quantity   Component name
1 × Arduino Nano PCB Arduino Nano PCB, but any other Arduino / Genuino PCB with Atmega 328 MCU can be used.
2 × Sensor touch controller break board MPR121 Arduino - compartible break board with I2C interface
1 × Rexant 3 А toggle switch Rexant 3 А toggle switch
1 × Button non-fixed SPST Button non-fixed SPST
1 × HC-SR04 Ultrasonic Sensor Arduino - compartible ultrasonic sensor
1 × MP3 player DFPlayer Mini MP3 player DFPlayer Mini
1 × Stereo Amplifier PAM8610 Mini Hi-Fi Stereo Amplifier PAM8610 Mini Hi-Fi
2 × Speaker 0.5GD-50M Speaker 0.5GD-50M (or any other 4-8 Ohm Speaker)
1 × XL6009 DC-DC converter XL6009 DC-DC converter
1 × Powerbank Any kind of +5 - +12 V powerbank or accumulator
3 × AA battery box RUICHI 84x44x18 mm Ruichi battery box
4 × Nano Terminal adapter Nano Terminal adapter for screw connection