Ultrasonic distance sensor (HC-SR04) and 4-digit 7-segment LED display (TM1637) on a Wemos D1 mini.
Install the following Arduino libraries:
Connect jumper wires on mini breadboard (both on 5V):
- HC-SR04: TRIG = D2, ECHO = D1
- TM1637: CLK = D5, DIO = D6
