...
4-Pin Ultrasonic-Module HC-SR04
Probably we will need 10 of this sensors, but first we will try to fly with 6.
Links: Amazon, datasheet, short instructions
...
Power Supply: +5VDV, 10 x 15mA working current
weght: 59g
Pins: 2 GPIO, VCC, GND
- VCC = +5VDC (GPIO)
- Trig = Trigger input of Sensor (5V Digital GPIO)
- Echo = Echo output of Sensor (5V Digital GPIO)
Important: Outputs 5V. If the microcontroller can only handle 3.3V inputs, we need to build an easy voltage divider. - GND = GND (GPIO)
...