Using Basic Logic Gates – With & Without Arduino

Basic Logic Gates

Basic Logic chips have been around for a very long time, yet they are still used in new designs. An understanding of how basic logic chips work will move your design skills up a notch.

Today we will look at the most elementary of logic chips, the basic gates. We’ll also learn about logic families, and we’ll see how to create a logic chip emulator using an Arduino.

We’ll finish up by designing a simple intruder alarm using an Arduino and a basic logic gate.

Getting started with the ESP32-CAM


Today we will look at the amazing ESP32-CAM module from A-Thinker. This 10-dollar module features a 2MP camera, microSD card socket, WiFi, and Bluetooth.

Unlike other ESP32 modules this one does not have a USB port, so you’ll need to use an FTDI adapter to get it working.

In this article I’ll show you how to work with the ESP32-CAM and how to resolve common power and antenna issues.

Testing Cases for the Raspberry Pi

Stress Test Raspberry Pi Cases

A Raspberry Pi case is more than just a box, it also can have drastic effects on performance. The case can affect heat dissipation, WiFi performance and access to the GPIO and other connectors.

In this article, and the accompanying video, I’ll test a number of cases to see how they perform under stress. I’ll also show you how you can use utilities like Stressberry and iPerf to check your own enclosures for the Raspberry Pi.