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forward and reverse with just 4 microcontroller pins (if you do not use enable pins)
The MQ135 Gas Sensor Module is a high-quality
It is useful for tasks like home automation where the module can be placed in the main switchboard and can be connected to loads in other parts of the house and can be controlled from a central location using a microcontroller
and 1900MHz PCS
Tilt Sensor Module SPDT forward and reverse with justTilt Sensor Module The Tilt Sensor Module for Arduino comes with the basic components for operation. Supplying power and it is good to be used. Attach the inclinometer sensor to an object and it will detect whether the object is tilted. Simple usage as it is the digital output, so you will know whether the object is tilted or not by reading the output. It uses SW 460D or SW 520D tilt sensor. The Tilt Sensor is the ball rolling type, NOT Mercury type.
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