Regular workstations (PC’s) and servers are often plugged into a UPS (Uninterruptible Power Supply, or Battery Backup) with a USB cable so that the UPS can tell the computer when battery voltage is low, and to perform a clean shutdown.

Another HF Caliper project. Here is the HF Caliper connected to our digital interface for Arduino, Raspberry Pi, and more. Just above the battery door is a small access panel that covers a 4 pin edge connector. Carefully solder 3

As I’m working on several Raspberry Pi hosted web/database/IOT projects this Christmas Season, I wanted to share my ultimate workstation. First of all you need a Raspberry Pi. Now that version 3 is out, I got rid of all my

When you are building circuits and programming your microcontroller, you probably have it sitting on a table, wires going everywhere, and possibly shorting the bottom pins on clipped wire pieces, tools, and other obstructions. It can be a challenge to

For those who want to control their DCC Model Railroad with their cell phones or tablets (pretty much any Android (Engine Driver) or IOS (WiThrottle) device), There is a Raspberry Pi image already built. Copy it to a sdcard, insert

The cheapest WiFi modules on the market (around $3 each) are the ESP8266-01 boards, which are WiFi enabled microcontrollers in their own right (with limited I/O), or they can be used with an Arduino as the WiFi interface. However, they