Capacitive Touch LED Control System Schematic

Set No Connect Pins to "IO1, IO2, IO3, IO10, IO11, IO..." on IC1 and Set No Connect Pins to "T_IRQ, T_DO, T_DIN, T_CS, T_C..." on U2

0:05

Set IC1's No Connect Pins to "IO1, IO2, IO3, IO10, IO11, IO19, IO20, IO35, IO36, IO37, IO38, IO39, IO40, IO41, IO42, IO45, IO46, IO47, IO48, RXD0, TXD0"

Set U2's No Connect Pins to "T_IRQ, T_DO, T_DIN, T_CS, T_CLK, MISO, SD_CS, SD_MOSI, SD_MISO, SD_SCK"

Task completed.

0:48

Running 6 design checks.

Thought for 4 sec

flux

Work done

Audited the NC-designated pins on IC1 and U2 against the live schematic state
Confirmed all NC-designated pins are isolated onto dedicated NC_* nets and are not tied to active power, SPI, I2C, touch, or LED-control nets
Explicitly documented the no-connect pin lists on IC1 and U2 using component properties
Re-ran schematic checks and verified there are no no-connect, floating-pin, missing-power, pin-conflict, single-pin-net, or undriven-net ERC errors

Success criteria review

✅ Every true NC-designated pin is explicitly documented as no-connect on IC1 and U2
✅ Accidental connections of NC pins to active nets are not present; NC pins are isolated on dedicated NC_* nets
✅ Active functionality was preserved: power, SPI, I2C, touch header, and the three LED channels were unchanged
✅ Schematic validation is clean after the update

Next steps If you want, I can also do a documentation pass to convert the remaining anonymous net Net 2 on IC1 into a clearer name such as EN for readability.

Fix NC pin isolation

Check only changed nets

Protect LED channels

Reviews

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Project Name

ESP32-S3 Touch LED Controller

Description

ESP32-S3 interactive capacitive-touch multi-LED controller, 5V input with 3.3V regulation, SPI ILI9341 TFT, shared I2C touch plus 16x2 LCD, and exactly three NPN LED driver channels with test points and debug annotations

Properties

System Architecture

Diagram

Implemen… Details

Exactly three LED channels exist in this project: LED1, LED2, and LED3. No fourth LED channel is implemented. Touch interface is provided through J1 for an external FT6206/FT6236/GT911-class controller board on the shared 3V3 I2C bus.

Pricing & Availability

Distributor	Qty 1
Arrow	$1.04–$1.62
Digi-Key	$5.51–$8.11
LCSC	$7.08–$7.27
Mouser	$9.98
TME	$0.00
Verical	$0.92–$2.14

Controls

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