P-10activeIoT & Automation · 2026
Bex 7386 Mini-Techlab — Smart Corner
An AP-mode Wemos D1 Mini smart home dashboard with DHT11 sensing, DS3231 time sync, SSD1306 OLED feedback, multi-effect LED control, and dynamic OLED text scrolling.
- Role
- Developer · Embedded UI & Home Automation
- Timeframe
- Mar 2026 - Present
- Domain
- IoT & Automation
- Status
- active
- Microcontroller
- ESP8266
- Display
- 128×32 OLED
- Web Mode
- Access Point
Overview
Smart Corner is a single-file firmware project for the Wemos D1 Mini that turns the board into an access-point web dashboard for smart-home style monitoring and control.
The system combines environmental sensing, RTC time synchronization, OLED feedback, and LED automation into one compact local-first interface.
The Challenge
The main challenge was keeping the interface responsive and visually polished while running everything on a small ESP8266-class board with limited resources and no cloud dependency.
Approach
- 01Built an AP-only dashboard served directly from the Wemos D1 Mini.
- 02Integrated DHT11 sensing for temperature and humidity monitoring.
- 03Added DS3231 RTC support with browser-triggered time sync.
- 04Implemented SSD1306 OLED page cycling plus custom scrolling text effects for long messages.
- 05Created multiple LED modes, including breathing and fireplace-style flicker, alongside a scheduled ward light.
Outcomes
- Delivered a compact smart-home control panel that runs fully local.
- Enabled browser control for LED modes, brightness, scheduling, and RTC updates.
- Packed telemetry and status feedback into both web UI and OLED output.
Stack
Hardware
- Wemos D1 Mini
- DHT11
- DS3231
- SSD1306
- LEDs
Firmware
- C++
- ESP8266WiFi
- ESP8266WebServer
Interface
- AP mode
- Web dashboard
- OLED scrolling