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Parsing a packet using structs

Parsing a packet using structs

luca January 18, 2018 3

When I was analyzing the source code of an opensource software, I found an interesting technique to parse incoming data in a very efficient way, using a struct. This technique works if the received data has a

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ESP32lights

ESP32lights

luca January 8, 2018 12

Today’s project, ESP32lights, is a smart device based on the esp32 chip. Thanks to ESP32lights you can turn a load on and off (I used it for my christmas lights) ESP32lights connects to your

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SIM800 GSM module

SIM800 GSM module

luca December 18, 2017 0

Today I received from  Banggood a GSM module based on the SIM800 chip by SIMCom. I’m going to use this module in a future Arduino project that will allow me to remotely control devices. In this article I’ll show you

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ESP32 (28) – MQTT and SSL

ESP32 (28) – MQTT and SSL

luca December 4, 2017 6

Security is a very important aspect for MQTT brokers. In a previous article you’ve already learned how to implement authentication and authorization. The weakness in that configuration was that credentials were transmitted in cleartext; it was therefore

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Java, IllegalFormatConversionException when importing an SSL certificate

Java, IllegalFormatConversionException when importing an SSL certificate

luca November 28, 2017 0

Today I faced a strange problem. I needed to import an SSL certificate in a java keystore, using the “classic” keytool command. I was sure that the format of the certificate was correct, but I

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