Description
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
| Feature | Details |
|---|---|
| Model | COSMIC-115 / AT115 |
| Connectivity | Bluetooth + USB + AUX + FM |
| Microphone | Inbuilt + External Mic Support |
| Power Input | Type-C (5V DC) |
| Audio Output | Stereo Speaker Output |
| USB Support | Yes (Pendrive Audio Playback) |
| FM Support | Yes (FM Antenna Required) |
| Battery Support | Yes (BAT+ / BAT-) |
| Control Buttons | Volume, Mode, Play/Pause |
| Installation Type | DIY PCB Board |
| Build Quality | Premium PCB with SMD Components |
🔧 Applications / Uses
- 🔊 DIY Bluetooth Speaker Box
- 🎶 Portable Speaker System
- 🔧 LED TV / Audio Repair Projects
- 📻 FM Radio Speaker Build
- 🚗 Car Audio DIY Upgrade
- 🛠 Electronics Learning & Training
- 🏠 Home Audio System Modification
🎯 Why This Board is Special?
- ✅ All-in-one audio solution (Bluetooth + USB + AUX + FM)
- ✅ Type-C support (latest standard 🔥)
- ✅ Battery + Speaker direct connection
- ✅ Ready-to-use control buttons
- ✅ Compact & technician-friendly design
📦 Package Includes
- 1 × COSMIC-115 / AT115 Bluetooth Audio Amplifier Board
⚠️ Important Notes
- 🔸 Power supply must be stable (5V recommended)
- 🔸 Proper speaker matching required for best output
- 🔸 FM requires external antenna for better signal
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