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Could be also used to tie bags
74HC175 is a quad positive-edge triggered D-type flip-flop with individual datainputs (Dn) and complementary outputs (Qn and Qn)
Screw driver +
- Antenna interface: spring antenna (characteristic impedance of 50Ω)
It is a good solution
SW-420 Vibration Switch Module Wireless RF Kit 433 Mhz (Transmitter+Receiver) Could be also used toIntroduction: SW 420 vibration sensor is a module that can detect vibrations or shocks on a surface. It can be used for various purposes, such as detecting door knocks, machine malfunctions, car collisions, or alarm systems. It operates from 3. 3 V to 5 V. The module has three peripherals, two LEDs, one for the power status and the other for the sensor output. In addition, there is a potentiometer that can be further used to control the threshold
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