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Nov 3, 2023 at 23:19 vote accept Konrad
Oct 28, 2023 at 14:35 answer added glen_geek timeline score: 5
Oct 28, 2023 at 8:06 comment added Antonio51 Tx: spkr1 should be driven with a transformer. Rx: LM393 is not "well" designed.
Oct 27, 2023 at 23:32 comment added Konrad Dear Mattman944, I don't need to measure distance, just to send signal via ultrasound to wake up device that is located somewhere in given room.
Oct 27, 2023 at 23:30 comment added Mattman944 You say that what you have is similar to a HC-SR04, why not use a HC-SR04? It has more sophisticated electronics than what you posted. But realize that it is only specified to 0.5 meter.
S Oct 27, 2023 at 23:12 review First questions
Oct 27, 2023 at 23:57
S Oct 27, 2023 at 23:12 history asked Konrad CC BY-SA 4.0