Very good and useful ethernet module, excellent for iot devices because process the ethernet packets with no charge for the main mcu. Can be used even stand-alone: you can add some sensors digital and/or analogue sensors, some i2c devices and that's all, you have finished your project. , i connected the battery with one adc pin to measure its status, added an oled display, connected to network and that's all, my modbus sensor is ready, replaced an plc which is 10 times bigger ! ! Of course, you need a serial usb-to-ttl adapter to load the sketch.
2nd time when i buy this item from this store. Taken 2 pcs with aliexpress "choice", shipped for free, arrived very fast (in 13 days in eu). Tested one, runs as expected.
And a final note: in picture is advertised as ver 1.2, but in fact i received ver 1.4. This module is 7mm longer than v1.2, but this doesn't matter, because v1.4 is very stable.
