Put together a dual-555 circuit in LTSpice to generate a 40 kHz pulse train with a 10 us pulse duration and 25 Hz repeat rate. No Arduinos here!
Schematic without output transistor
Period between pulse trains
A project log for Automatic Dog Door Smart Home Interface
Reverse engineering an automatic dog door ultrasonic protocol to control it
Put together a dual-555 circuit in LTSpice to generate a 40 kHz pulse train with a 10 us pulse duration and 25 Hz repeat rate. No Arduinos here!
Schematic without output transistor
Period between pulse trains
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