HKD WEMOS ESP32 WiFi Bluetooth Module with OLED Display & Battery Holder

The HKD ESP32 Development Board is a versatile all-in-one module designed for portable, low-power IoT projects. It combines the powerful ESP32 (Revision 1) chip with built-in WiFi and Bluetooth, a 0.96-inch OLED display, and an integrated 18650 battery holder. This compact unit is ideal for standalone wireless applications, removing the need for external power banks or display modules.

Perfect for developers and hobbyists, this board allows you to power your project with a single 18650 Li-ion battery (not included), while still enjoying features such as charging, OLED display, GPIO access, and battery protection all in one.

Key Features:

• Built-in ESP32 (Rev 1) microcontroller with integrated WiFi and Bluetooth
• 18650 battery holder with built-in battery charging and protection circuitry
• 0.96" OLED display (white text) for real-time data display
• Battery level and charging status LEDs (Red = Charging, Green = Full)
• Overcharge and over-discharge protection for battery safety
• Simultaneous charging and operation - can be powered and used at the same time
• Power control switch for manual shutdown
• Programmable LED connected to GPIO16 (D0)
• Full ESP32 pins broken out for easy expansion and prototyping
• 0.5A charging current, 1A output current

Technical Specifications:

• Microcontroller: ESP32 (Revision 1)
• Wireless: WiFi 802.11 b/g/n, Bluetooth 4.2 (BLE + Classic)
• Display: 0.96 inch OLED (White, I C interface)
• Battery Holder: Supports 1x 18650 Li-ion battery (not included)
• Charging Current: 0.5A
• Output Current: 1A
• Battery Life: Up to 17+ hours with 3000mAh 18650 battery
• GPIO Access: All ESP32 pins accessible for development

Applications:

• Portable IoT data loggers
• Wireless environmental monitoring
• Battery-powered sensor nodes
• Remote control and automation
• Wearable tech prototyping
• Educational STEM kits

What's in the box
x1 HKD WEMOS ESP32 WiFi Bluetooth Module with OLED Display & Battery Holder