4 Ways to Control Electronic Relays
There are plenty of ways to use relays, and each method can achieve several different results. Check out this step by step guide to figure out what you need.
relays
Boost Your BeagleBone Black with Breakout Board
Making a PCB is easier than you might expect.
Open Access Secures Hackerspaces
Open Access is a hackerspace security system that was born out of a project out of Fullerton, CA’s 23B Shop hackerspace. It keeps the doors of a building locked until a recognized RFID fob is applied to the reader.
Component of the Month: Relays
A relay enables a signal or pulse of electricity to switch on (or switch off) a separate flow of electricity. Often, a relay uses a low voltage or low current to control a higher voltage and/or higher current. The low voltage/low current signal can be initiated by a relatively small, economical switch, and can be carried to the relay by relatively cheap, small-gauge wire, at which point the relay controls a larger current near to the load. In a car, for example, turning the ignition switch sends a signal to a relay positioned close to the starter motor.
Build Your Own Relay-Triggered Power Cord
Ryan Edwards of Sparky’s Widgets shot this YouTube video showing how to build a DIY version of the PowerSwitch Tail that can switch up to 120VAC/12A.
Prison Door System Built Using Only Timers and Relays
When the trustees of a southern prison insist that no microprocessors or transistors be used to create a new door and gate locking system, a young engineer springs into action with relays and timers.
Raspberry Pi Christmas Light Controller
I jumped at the chance to to post this video since it combines a few of our favorite things: Christmas, Raspberry Pi, and Star Wars all rolled into one project. Posting under the name Chivalry Timbers, this maker created a MIDI-synced Christmas light display that uses the Raspberry Pi’s GPIO pins connected to solid state […]
