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STD Capacitive touch sensor
Profile：Capacitive touch sensor TTP223B
License: Public Domain
Description
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.
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity | |
|---|---|---|---|---|---|
| 1 | JUMPER-2 | A,B | SJ_2S | 2 | |
| 2 | 100nF | C1,C2 | C0402 | 2 | CL05B104KO5NNNC |
| 3 | 10uF | C3 | C0402 | 1 | CL05A106MQ5NUNC |
| 4 | 1N4148 | D1 | SOD-523_L1.2-W0.8-LS1.6-BI-1 | 1 | 1N4148W_C81598 |
| 5 | XL-1005SURC | LED1 | LED0402-R-RD_RED | 1 | XL-1005SURC |
| 6 | Header-Male-2.54_1x3 | P1 | HDR-3X1/2.54 | 1 | |
| 7 | 1kΩ | R1 | R0603 | 1 | 0603WAF1001T5E |
| 8 | TTP223-BA6 | U1 | SOT-23-6 | 1 |
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