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STD Touch Pwr Sensor - Raspi-Atmel copy copy
License: CC-BY-SA 3.0
Mode: Editors' pick
Cloned from Touch Pwr Sensor - Raspi-Atmel copy
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Update time：
2019-05-16 08:37:51
Creation time：
2019-05-16 08:37:45
Description
Touch sensor using AT42QT1010 with power led indication.
For power led indication, use in conjunction with Delay Timer connected to GPIO14 (https://easyeda.com/lynxlabeling/delaytimer).
Note: this circuit is connected to an N-channel Fet, which pulls GPIO3 pin low when activated. Add 'dtoverlay=gpio-shutdown' to /boot/config.txt file to use. For info, see:
- Add LED power indicator - https://howchoo.com/g/ytzjyzy4m2e/build-a-simple-raspberry-pi-led-power-status-indicator
- Power button tutorial - https://www.stderr.nl/Blog/Hardware/RaspberryPi/PowerButton.html
- And, see 'dtoverlay=gpio-shutdown' - https://github.com/raspberrypi/firmware/blob/master/boot/overlays/README
Design Drawing
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| ID | Name | Designator | Footprint | Quantity | BOM_Supplier | BOM_Manufacturer | BOM_Manufacturer Part |
|---|---|---|---|---|---|---|---|
| 1 | AT42QT1010-TSHR | U1 | SOT-23-6 | 1 | LCSC | Microchip Tech | AT42QT1010-TSHR |
| 2 | 100nF | C2 | LYNX_0603 | 1 | LCSC | YAGEO | CC0603KRX7R9BB104 |
| 3 | 1nF | C1 | LYNX_0603 | 1 | LCSC | YAGEO | CC0603KRX7R9BB102 |
| 4 | 10k | R3 | LYNX_0805 | 1 | LCSC | UniOhm | 0805W8F1002T5E |
| 5 | LTST-C230KGKT | LED1 | LYNX_LED-REV-1206 | 1 | LCSC | Lite-On | LTST-C230KGKT |
| 6 | TestPin | P1 | HDR-1X1/2.54 | 1 | LCSC | ReliaPro | Header-Male-2.54_1x1 |
| 7 | JST_B4B-XH-A | H1 | B4B-XH-A | 1 | Digi-Key | JST | B4B-XH-A |
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