This explains how to control devices using wireless transceiver module NRF24L01. The same can be modified as wireless sensor project.

Use FreeRTOS (simple, easy, robust, & optimised for the Arduino IDE) to reduce the power required for battery or low power applications.

How to water a lemon tree with Arduino PRO MINI, a RTC and a pump.

The FlySky joystick is adopted to control the speed and limitations of the ramp of two stepper motors

Display made of LED strip. Displays the number sent by SMS. Arduino Pro Mini + SIM800.

How to hack an ikea dioder to make it an IoT device. The project uses the mysensors opensource libraries.