Lonely Binary 3-Pack ESP32-C3 OLED WiFi BLE LiPo Shield for Arduino IDE

Lonely Binary 3-Pack ESP32-C3 OLED Development Board Kit with Expansion Shields

The Lonely Binary ESP32-C3 OLED Kit includes three ESP32-C3 development boards, each with a built-in OLED display for real-time data visualization and debugging. Paired with expansion shields, the kit supports protected LiPo batteries (such as 18650 cells) for portable, battery-powered applications. (Battery not included.)

The LiPo battery functions like a UPS: when Type-C is connected, the ESP32 draws power from it and charges the battery; if disconnected, the battery takes over without rebooting or interrupting your code.

Included Shields

• 2.54mm Expansion Shield with dual male/female GPIO pins to reduce jumper cable mismatches
• Screw Terminal Shield for secure, permanent installations
• Non-Screw Terminal Shield for quick prototyping with raw cables

All shields step down battery voltage to a stable 3.3V for the ESP32-C3 while enabling simultaneous charging via USB Type-C. Built-in battery monitor pads allow voltage monitoring by shorting them.

Compatible with Arduino IDE, C++, MicroPython, ESP-IDF, and more — suitable for makers, hobbyists, and professionals building smart devices, sensors, or wearables.

Package Includes

• 3 × Lonely Binary ESP32-C3 Development Boards with OLED Displays
• 1 × 2.54mm Expansion Shield with LiPo Battery Port
• 1 × Screw Terminal Shield with LiPo Battery Port
• 1 × Non-Screw Terminal Shield with LiPo Battery Port

Note: LiPo batteries and jumper cables sold separately.

Designed in Australia

Lonely Binary is an independent Australian brand focused on open-source maker hardware.