In this blog post you're going to learn how to decode (parse a JSON string) and encode (generate a JSON string) with the ArduinoJson library using the Arduino with the Ethernet shield. This guide also works with the ESP8266 and ESP32 Wi-Fi modules with small changes. Decoding and...

A quick reference in learning and debugging your electronics projects. Click to "download" the full resolution image + a bonus poster. or download ZIP file. "Amirhossein Amini" has re-designed the above poster in Corel Draw and the source file can be downloaded here or PDF...

Another energy meter from Texas Instruments using MSP430AFE2xx. (PDF) This application report describes the implementation of a single-phase electronic electricity meter using the Texas Instruments MSP430AFE2xx metering processors. It includes the necessary information with regard to...

WINXI - arduino ZERO Pro M0 compatible stick, RGB led, Micro SD, AtSamD21E18. Arduino zero pro compatible board with USB programming suitable for experienced users. WINXI - Arduino ZERO M0 Stick -...

The LT8650S is a dual step-down regulator that delivers up to 4A of continuous current from both channels and supports loads up to 6A from each channel. The LT8650S features the second generation Silent Switcher architecture to minimize EMI emissions while delivering high efficiency at...

Jean-Claude wanted to read SMA solar inverter data over Bluetooth and so he build this project. This is the first post of a 3-part series about reading out an SMA solar inverter over Bluetooth and displaying some readings every few seconds. Long-time readers may remember the Solar at...

Make a sustainable Raspberry Pi backup server and save your files from occasional loss. Raspberry Pi backup is what you really need if you work on Raspbian. Believe me, you do! If you backup your Raspberry Pi SD card in due course, someday it may save your files and your project. Alike...

In this tutorial we’re going to show you how you can turn a 12V lamp on and off by sending SMS to your Arduino with the text “ON” and "OFF", respectively. You can also request the current lamp state by sending an SMS with the text “STATE”, the Arduino should reply back with...