Consumer IoT · Wellness
Smart Night Companion for Restful Sleep
Developed a smart sleep-aid prototype that uses gentle red light, projected breathing guidance, synchronized audio, and connected firmware to support relaxation and better sleep routines.
Overview
This device combines visual relaxation cues, guided breathing, Bluetooth audio, BLE control, and a compact custom PCB to create a calming bedside experience.
Highlights
- Gentle red light for relaxation
- Projected breathing ring guidance
- Synchronized light and sound effects
- BLE pairing and OTA updates
Challenges
- Deliver relaxing red-light and breathing effects with stable output.
- Support wireless updates and remote control.
- Keep the design compact with low power consumption and minimal heat.
- Operate reliably for continuous multi-hour sessions.
Solutions
- Designed a custom 2-layer PCB with ESP32-WROOM-32E, power management, and LED drivers.
- Built ESP-IDF firmware in C for synchronized light, sound, sleep/wake timer, BLE pairing, and OTA.
- Used Bluetooth A2DP for audio and BLE for app/device control.
- Optimized hardware for mechanical robustness, space, and performance.
Features
- Sleep/wake timer
- Bluetooth A2DP audio
- BLE-controlled effects
- USB-C 5V power
- Main PCB plus USB PCB
Key Results
- Prototype operated smoothly from first test.
- Passed drop, heat, and durability testing.
- Became a proven top-seller in commercial release according to the showcase.
This device combines visual relaxation cues, guided breathing, Bluetooth audio, BLE control, and a compact custom PCB to create a calming bedside experience.
Designed a custom 2-layer PCB with ESP32-WROOM-32E, power management, and LED drivers.
Built ESP-IDF firmware in C for synchronized light, sound, sleep/wake timer, BLE pairing, and OTA.
Prototype operated smoothly from first test.