Using ESP32-devkitC and AWS serverless infrastructure.

I had a challenge with a freezer getting unplugged a few weeks ago, luckily, I had caught it before everything got above 40 (refrigerator temperature), so the food was not spoiled but instead cooked in quick order. I had worked with ESP8266 and arduino before, but my old ESP8266 boards were no longer working. (my… Continue reading Using ESP32-devkitC and AWS serverless infrastructure.

Understanding and Working with PCI DSS 4.0

The Payment Card Industry data security standards have evolved since 2002 when the first version was released. The most recent update, version 4.0.1, was released in June 2024. This updates the PCI 4.0 standard, whichย  has significant updates to both scope and requirements. These requirements were brought fully in force, in 2025. The purpose of… Continue reading Understanding and Working with PCI DSS 4.0