Hardware Specifications#
The TouchDot S3 development board is built around the ESP32-S3 Mini chip, offering a range of features tailored for wearables and IoT applications.
Schematic Diagram
Pinout Distribution#
Group |
Available Pins |
Suggested Use |
|---|---|---|
GPIO |
D2 to D13 |
Sensors, actuators |
UART |
Tx and Rx |
Serial communication |
TouchPad |
T1 to T11 |
Capacitive sensors for touch detection |
Analog |
A0 to A8 |
12-bit (0–4095) resolution |
SPI |
Optional |
Displays, additional memory |
Dimensions#
Fig. 1 Dimension#
Topology#
Fig. 2 Topology#
Ref. |
Description |
|---|---|
IC1 |
Espressif ESP32-S3 |
U1 |
AP2112K 3.3V LDO Voltage Regulator |
PB1 |
Boot Push Button |
PB2 |
Reset Push Button |
SW1 |
Power On Switch |
L1 |
Power On LED |
L2 |
Charge On LED |
L3 |
Built-in LED (GPIO 6 or D13) |
L4 |
WS2812B-2020 LED |
SB1 |
Solder bridge to enable QWIIC VCC |
J1 |
Male USB Type-C Connector |
J2 |
Low-power I2C QWIIC JST Connector |
J3 |
PH2.0 mm Pitch Battery Connector |
J4 |
Micro SD Slot |
JP1 |
Sewable Pads |
JP2 |
Sewable Pads |
JP3 |
GPIO, system, and power supply pin headers |
JP4 |
GPIO, system, and power supply pin headers |