COSMIC-115 / AT115 Bluetooth Audio Amplifier Board with Inbuilt Mic, Type-C Charging, USB, AUX & FM Support | DIY Speaker Module

Upgrade your DIY audio projects with the COSMIC-115 / AT115 Bluetooth Audio Amplifier Board 🔊 — a compact, multi-functional audio solution designed for modern wireless and wired connectivity.

This board comes with Bluetooth, USB playback, AUX input, FM antenna support, and inbuilt microphone, making it a complete audio control module for speaker systems, repair work, and custom builds.

Designed with Type-C power input and multiple interface ports, it ensures stable performance, easy installation, and professional results.

✨ Key Features & Highlights

• 🔵 Wireless Bluetooth Audio
  Seamlessly connect smartphones, laptops, and tablets.
• 🎤 Inbuilt Microphone
  Supports hands-free calling and voice input.
• ⚡ Type-C Power Input
  Fast, stable, and modern power solution.
• 🔌 Multiple Input Options
  • USB Port (Music Playback)
  • AUX (3.5mm Audio Input)
  • FM Antenna Support 📡
• 🎚 Onboard Control Buttons
  • Volume + / –
  • Mode Selection
  • Play / Pause
• 🔊 Speaker Output Terminal (SP+ / SP-)
  Easy connection for speaker units.
• 🔋 Battery Connection Support (BAT+ / BAT-)
  Perfect for portable speaker projects.
• 💡 Compact PCB Design
  Easy to fit inside speaker cabinets and DIY enclosures.

🔍 Ports & Connector Details (From Image Analysis)

• 🔌 USB Port – For pendrive audio playback
• ⚡ Type-C Port – Power input / charging
• 🎧 3.5mm AUX Jack – Wired audio input
• 🎤 Mic Input Jack – External microphone option
• 📡 FM_ANT Terminal – FM antenna connection
• 🔊 Speaker Output Pins (SP+, SP-)
• 🔋 Battery Pins (BAT+, BAT-)
• 🔗 VDD / GND / RGB Pins – Power & LED interface

📊 Technical Specifications