TTP226 - 8 Channel Capacitive Touch Sensor Module Single Colour 4(Blue) Type Common Anode Diameter

4(Blue) Type Common Anode Diameter 5 mm  RGB Lens colour Milky white RGB Wavelength 625-630(Red) / 517-520(Green) / 465-470(Blue) nm

you can now control the motor's speed

or other device

The sensor array consists of 4 IR sensors which can either be used together or separately and can be placed in different locations as well

TTP226 - 8 Channel Capacitive Touch Sensor Module Single Colour 4(Blue) Type Common Anode DiameterTTP226 8 Channel Capacitive Touch Sensor Module having Onboard 8 key TTP226 capacitive touch induction IC and Onboard 8 way level indicator. Capacitive touch allows electronics to detect when your finger is within a few milimeters of a surface, simulating the "press" of a button, similar to how a pushbutton works. Specification Operating Voltage Range 2. 4 ~ 5. 5V DC Output Sink Current 8mA Output Pin Pull up Current 4mA Response Time (Low Power Mode)