PCB For ESP12 Handheld development Board

Description

PCB For ESP12 Handheld development Board

The UGE ESP12 Development Board is a compact and versatile ESP8266-based platform designed for IoT, Wi-Fi automation, and embedded projects.
It integrates an ESP-12 module, CH340C USB interface, OLED display support, Li-ion battery charging circuit, RGB WS2812 LED, and user buttons, making it a complete development solution in a single PCB.

This board is available as a bare PCB for DIY soldering

Product Specifications:

• Main Controller: ESP8266 (ESP-12 / ESP-12F Wi-Fi Module)

• USB Interface: CH340C USB to UART converter (onboard auto-programming support)

• Programming Interface: Micro USB Type-B / C (selectable in design)

• Wi-Fi Standard: 802.11 b/g/n, 2.4 GHz

• Operating Voltage: 5V via USB or 3.3V regulated input

• Logic Level: 3.3V

Power & Charging Section:

• Battery Support: Single-cell 3.7V Li-ion / LiPo battery

• Charging IC: TP4056 (with LED indicators)

• Indicators:

  • Charging (Red)

  • Full Charge (Green)

• Power Switch: On/Off tactile switch for power control

• Power Paths: USB or Battery selectable via onboard circuit

Display & User Interface:

• OLED Display Connector: 4-pin header (GND, VCC, SCL, SDA) for I²C OLED (0.96″/1.3″)

• User Buttons:

  • Boot Button

  • Reset Button

  • Custom Function Button (OK)

• Status LEDs: Power and I/O indication

• RGB LED: WS2812 smart LED for color indication or status visualization

Pinout Highlights:

• GPIOs Available: D0–D8, ADC, RX, TX

• Dedicated Headers:

  • I²C (SCL, SDA)

  • Power Rail (3.3V, 5V, GND)

• Expansion Compatibility: Supports breadboard and sensor modules

Physical & Mechanical:

• PCB Size: Approx. 50mm × 35mm

• Mounting Holes: 2× M2

• PCB Finish: Blue solder mask with white silkscreen

• USB Type: Edge-aligned USB port for easy enclosure integration

Features:

• Fully compatible with Arduino IDE and ESPHome / NodeMCU firmware

• Onboard auto-reset & flash circuitry via CH340C

• Integrated battery management system for portable IoT projects

• Plug-and-play OLED display interface

• RGB WS2812 LED for visual feedback

• Ideal for IoT, Wi-Fi automation, battery-powered sensors, and prototyping

• Available as DIY Bare PCB

Here the Soldering Guide Manual