I develop IoT and microcontroller programs for ESP32, ESP8266, and Arduino — from simple offline automation to full internet-connected systems with mobile control and real-time dashboards.
What I do:
- Offline device control (lighting, sensors, automation logic)
- Online IoT systems controllable via mobile app (Blynk, Firebase)
- Sensor data dashboards with real-time monitoring
- Automated notification systems (LINE and other messaging channels)
- Hardware recommendations if you don't have components yet
Recent work includes an automated door-control system built on ESP32 and Blynk, with remote open/close control via mobile app.
Why work with me:
- Free preview/demo before you commit to hiring
- Unlimited revisions until you're satisfied
- Ongoing support and consultation after delivery
- Clear milestone-based payments (deposit before work begins)
Portfolio: https://pkfreelancebs.web.app/
Tell me what device/system you want to build and I'll scope it out for you.