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Short-to-ground and shorted-load protection
A variable resistor is to adjust the distance range of the module
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
Which means that the output pin of 8 pin XOR gate can drive 10 TTL based Low-Power Schottky( LS ) input pins
Gold for these 10M resistors
TTP226 - 8 Channel Capacitive Touch Sensor Module Single Colour Short-to-ground and shorted-load protectionTTP226 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)
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