Parallel: Port To Relay Card

You can program this stand alone controller via PC Serial Port. Simply connect a serial cable from your computer to the connector on relay board.

Use an old PC as a "dedicated controller" to turn on or off devices lab or radio shack. The circuit includes eight relays controlled with (included) software for either DOS or Windows 3.1. The kit is a boon to the Science Fair project, laborator

Use an old PC as a dedicated controller to turn on or off devices lab or radio shack. The circuit includes eight relays controlled with (included) software for either DOS or Windows 3.1. The kit is a boon to the Science Fair project, laboratory experiment

You can program this stand alone controller via PC Serial Port. Simply connect a serial cable from your computer to the connector on relay board.

There are many applications where you need quick availability of a relay for connection to a particular piece of apparatus. We found in developing our kits that we always needed to have a relay mounted on a PCB within arms reach.

Low cost 12 channel Infrared Remote Control with relay board

Timer circuits are handy for many experimenters projects, not to mention the photo lab. This kit has three separate circuits that can be used individually or together. Each circuit has a separate 5 Amp relay. Circuits operate on 9 Volt DC.

This mini-VOX - voice operated relay - is based on a circuit published in Silicon Chip, 9/1994, p31.

An entry level programmer and a terrific educational aid. The 16C84 micro-controller from Microchip Technologies has become very popular with hobbyists and beginners. Does not require U/V light to erase programs; programs are erased electrically and the c

The primary function of this Relay Board is to turn devices on or off. It's simple!

4 Channel RF Remote Control Relay Board with Auto Roll

The most popular use for this kit is to make you own night-light. It can also be used to switch just about any appliance on or off in light or darkness. Light sensitivity is adjustable over quite a range. The relay can handle up to 10 Amps at 110VAC. Oper

Both a touch and a contact switch are built on one PC board so that the builder can see how each works. A battery can power the contact switch but you'll need an AC power supply for the touch switch to work well. The circuit switches a relay with a 3 Amp

Adjust the sensitivity of this circuit to control a Relay that can turn on whatever is connected to the contacts of the relay. Very practical circuit for a variety of projects. Turn on a light when your dog barks, or set of a siren when an intruder makes

4 Channel RF Remote Control Relay Board with Auto Roll

The TRIBOTZ is three robots in one! Tribotz can operate in: Avoider mode where on-board sensors help Tribotz to avoid obstacles, Sound Operating mode where Tribotz changes direction in response to sound impulses, and in Line Tracer mode where on-board sen

The HYDRAZOID will react to sound impulses such as clapping of hands and move forward for 15 seconds and then stop to await another sound command

ANTOID walks on six legs using its infrared eye to detect and avoid objects in its path.

Teaches the fundamentals of a basic robotic sensing and locomotion principles while testing motor skills. Includes 5 switch wires controller to grab, release, lift, lower, rotate wrist, and pivot sideways 120°. Transparent arm shows the state-of-the-ar

Set this relay-based timer for anywhere from a few seconds to about 15 minutes so that you can time on/off almost anything.

Three relay-based electronic switching circuits that switch according to light levels.