Wemos Lolin D1 Mini Pro V2

Setup was surprisingly quick using the MicroPython firmware, and the built-in USB-to-serial chip makes programming a breeze. It's tiny but the range with the external antenna connector is really impressive.

Finally got OTA flashing working with this board, the ceramic antenna makes a huge difference in signal strength compared to the basic D1 mini. I’ve been using it as a small IoT sensor node in my garage, and it connects reliably through two walls.

The built-in ceramic antenna on this board gives me a much more stable WiFi connection compared to my older ESP-01 modules. It’s super compact for tucking into small enclosures for my sensor projects.