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Capacitive touch sensor

4 years ago 3045
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Circuit for a project with a single "momentary" capacitive touch sensor. No microcontroller is required here - just power with 1.8 to 5.5VDC and touch the pad to activate the sensor. When a capacitive load is detected (e.g. a person touches the sensor-pad area) the red LED lights up and the output pin goes high.
For more information see the link.


Capacitive touch sensor


ID Name Designator Footprint Quantity BOM_Manufacturer Part
1 Header-Male-2.54_1x3 P1 HDR-3X1/2.54 1 Header-Male-2.54_1x3
2 TTP223-BA6 U1 SOT-23-6 1 TTP223-BA6
3 JUMPER-2 A,B SJ_2S 2 ?
4 100nF C2,C1 0805 2 0805B511K500NT
5 10uF C3 0805 1 0805B511K500NT
6 red LED1 LED-0603 1 19-217/G7C-AN1P2/3T
7 1k R1 0805 1 0805W8F402JT5E
8 4148 T4 D1 SOD80_DO213AA_MINIMELF 1 ?




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