Watchy image

Watchy

Development Board

Code name: WATCHY
ESP32

Watchy is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 4MB flash memory.

About Watchy

Open-source ESP32 smartwatch with e-paper display - ideal for wearable development, clocks, and DIY wrist apps.

📋 Technical Specifications

Complete technical specification details for Watchy

🛰️ Connectivity

WiFi 802.11 b/g/n (2.4 GHz)
Bluetooth 4.2
BLE 4.2

🧠 Microcontroller

Model esp32
Clock Speed 240 MHz
Flash Size 4MB
Architecture xtensa

✨ Features & Pins

Digital IO 40
Analog Input 16
PWM 17
Interrupts 16

Useful Links

Datasheets and resources for Watchy

ESP32 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for Watchy

40
Digital I/O Pins
16
Interrupt Pins
16
Analog Inputs
17
PWM Pins
PinAnalogTouchPWMOther
1PWMTX
3PWMRX
4PWMDOWN_BTN_PIN
5PWMSS DISPLAY_CS
9PWMDISPLAY_RES
10PWMDISPLAY_DC
12PWMACC_INT_2_PIN
13PWMVIB_MOTOR_PIN
14PWMACC_INT_1_PIN
18PWMSCK
19PWMMISO DISPLAY_BUSY
21PWMSDA
22PWMSCL
23PWMMOSI
25PWMBACK_BTN_PIN
26PWMMENU_BTN_PIN
27PWMRTC_INT_PIN
Legend
A0 Analog input
T0 Touch sensor
PWM PWM capable
RX/TX Serial pins
LED Built-in LED
# Pin number

Default Tools & Configuration

Build and upload settings for Watchy

SettingValue
Bootloader toolesptool_py
Uploader toolesptool_py
Network uploader toolesp_ota
Bootloader address0x1000
Flash modedio
Boot modeqio
Maximum upload size
1280 KB (1310720 bytes)
Maximum data size
320 KB (327680 bytes)
Configuration Summary

The Watchy uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x1000.

Flash mode: dio | Boot mode: qio

Max sketch size: 1280 KB | Max data size: 320 KB