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Can anyone illustrate a functional block diagram of a HC-SR04 ultrasonic sensor? I understand how it works when it comes to the application but I would like to know how it works fundamentally as a system.

BroomHilda
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    The schematic is available on the web. It's not particularly involved circuit wise. – Kartman Jan 26 '21 at 07:03
  • This might help: HC-SR04 Ultrasonic Senor Wiring, Operation, and Python Programming Problem - RpiSE 2019apr18 https://raspberrypi.stackexchange.com/questions/96647/cant-get-hc-sc04-sensor-to-work – tlfong01 Jan 26 '21 at 08:37
  • And there is a schematic by Mbed: https://os.mbed.com/media/uploads/4180_1/hcsr04_schematic.svg – tlfong01 Jan 26 '21 at 09:00

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