I’m using the tiny and inexpensive Nordic Semiconductor nRF24L01+ transceiver (see “Tutorial: Nordic Semiconductor nRF24L01+ with the Freescale FRDM-K64F Board“) in many projects: it costs less than $3 and allows me to communicate with a proprietary 2.4GHz protocol in a low power way (see “IoT: FreeRTOS Down to the Micro Amps“). I have that transceiver now running with the tinyK20 board too: The normal 2×3 ...

The first article in this two-part series, Understanding and Implementing the HC-12 Wireless Transceiver Module, uses the HC-12 to create long-distance data transmission between two Arduino Unos. This article uses a pair of HC-12 transceivers, a GPS module, an Arduino, and Google Maps to create a very simple tracking device. Item Cost More Information HC-12 transceiver (x2) $4 Datasheet GPS Receiver $16 Dat ...

Overview ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor. ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other a ...

Over time I have tried to extend my home automation system and about a year ago I have bought an Current Cost energy monitor, this was after i have tried a number of others and i wasn’t impressed with their performance. Now, the Current Cost was a winner for me mostly of the fact that it is quite easy to connect it to my home automation system, however there is one small problem which is quite annoying. The ...