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