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ARD-017, Metal TouchSensorte Ky-036 Metal Touch Sensor Module in the 37 Sensors Set Could Be Used for A Nice Feature. What is it is, when you touch the metal around the black part at the end, you get a trigger.to connect the sensor to the nodemcu, connect to ground, + to 3.3v and eiter a0 to the adc port or d0 to a digital port (in my Example Below I VE Used D3) To Receive a Signal Where there the Device Is Touched, Usse the Following Code: Function Touch. LEVEL) GPIO.WRITE (0, LEVEL) print (Level) endgpio.mode (0, gpio.output) gpio.trig (3, "Both", touchedfeatures: Main chip: LM393Working Voltage: Utlow Level Output Signal used for Human Body Touch Sensor Alarmadjustable Sensitivitywith Fixed Bolt for Easy Intallationworks With Official For Arduino Boardsforum Link: Facebook.com/123neonadomaterial: PCBB + Brasss. 16 x 15 mm / 1.69 x 0.63 x 0.59 Inchweight: 3 g / 0.11 ozcolor: Black + Blue
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