If you are in need of such a 4.0 BLE Bluetooth module, MCU can be set up,also can controlled by a remote Bluetooth device for setting,can transfer data, and can remotely control 10 PIO pins,so,the best choice is HM-10 bluetooth module. can replace HC-05, HC-06, HC-07 etc.
This is a long distance 2.4G wireless module which basic on nRF24L01+ chip, and there is the PA and LNA circuit on board, with the external antenna it can reach long distance than the one without these parts.
Micro hydro power is clean, renewable energy. Here is a micro hydro generator which can supply stably output voltage and output current with the help of one voltage stabilizing circuit and one rechargeable battery. We can install it at home to save household energy, like using spray shower to light LEDs etc.
“An open-source firmware and development kit that helps you to prototype your IOT product within a few Lua script lines” Based on ESP8266 ESP12E wifi board, on-board USB-TTL support directly flashing from USB port, also on-board power circuits and all IOs setup.
MF RC522 is a highly integrated transmission module for contactless communication at 13.56 MHz. This transmission module utilises an outstanding modulation and demodulation concept completely integrated for different kinds of contactless communication methods and protocols at 13.56 MHz.