Category: Software

DynamoDB JavaScript SDK v2 and v3 scan table data with pagination 0

DynamoDB JavaScript SDK v2 v3: scan table data with pagination – 5

I would like to write a step by step tutorial on how to create an Alexa Smart Home Skill from scratch. So we present all the prerequisites and the step to create a Smart Home Skill connected to our microcontroller to manage all kinds of devices.
We will learn how to do scan operation and use It to paginate data results with the JavaScript SDK v2 and v3.

DynamoDB prerequisite and JavaScript SDK v2 and v3 introduction 0

DynamoDB: prerequisite and JavaScript SDK v2 and v3 – 1

I want to write a step by step tutorial on how to create an Alexa Smart Home Skill from scratch. So I’m going to present all the prerequisites and steps to create a Smart Home Skill connected to our micro-controller able to manage every connected device.
We will give a brief introduction to DynamoDB and the prerequisites required to work with the JavaScript SDK v2 and v3.

Send email with attachments Arduino SAMD boards 21

Send emails with attachments: Arduino SAMD boards (WiFiNINA) – 3

I would like to introduce version 2 of the EMailSender library, a great evolution compared to version 1, with support for Arduino with w5100, w5200 and w5500 ethernet devices and enc28J60 clone devices, support for esp32 and esp8266 and finally (from version 2.2.0) support for all Arduino (SAMD) devices using the WiFiNINA library (Arduino UNO WiFi Rev.2, Arduino NANO 33 IoT, Arduino MKR 1010 and Arduino MKR VIDOR 4000 WiFi etc.). Now you can add attachments also, loaded from storage device like SD or SPIFFS.

ABB PowerOne Aurora Web Inverter Centraline WIFI configuration and REST Server 0

ABB (Power One) Aurora Web Inverter Monitor (WIM): WIFI configuration and REST Server – 6

I’d like to monitoring my ABB Aurora inverter. So with an WeMos D1 mini I create a centraline with web interface, notification and other.
Here I’d like to explain how to configure WiFi first time and I show REST API of the device.

WebSocket Arduino esp8266 esp32 client 6

WebSocket on Arduino, esp8266 and esp32: client – 1

Modern web applications need to update data in real time, for years we have used polling with REST calls but now we can no longer ignore the WebSocket protocol.
Here I am going to present a WebSocket client with esp8266, esp32 and Arduino Mega with enc28j60.Here a WebSocket client with esp8266, esp32 and Arduino Mega and enc28j60.