Laser Pointer Relay Kit, 12v (#1735)

Laser Pointer Relay Kit
Laser Pointer Relay Kit Laser Pointer Relay Kit
Price: $12.99

This is the Laser Pointer Activated Relay Kit. This is an interesting and extremely useful device. This is a Relay activated by those little Red Laser Pointers that you can find anywhere for a couple of dollars. The circuit has a sensitivity adjustment so that you can use it outdoors or indoors. It has been designed to work off of the common Laser Pointers found everywhere and will work with Red, Green, Blue, and White Lasers, LEDs, & Lights.

This device can be set up to turn on just about any device from about anywhere in your home or office without you having to move. Just point the Laser at the light-sensitive resistor and the circuit will turn on for an adjustable time period, anywhere from 1 second up to an hour. After the adjustable time period is up, the Relay will turn itself off and wait for the next Laser trigger.

There are two LED indicators on the PCB, one that will turn on anytime the Laser Pointer hits the LDR and one that will come on while the Relay is energized. This circuit has many uses including easy access for those that are not able to move about so easily. Think of the possibilities: Remote Control from a Laser Pointer. The Relay is an 833H series SPDT relay with Form 1C contacts rated for 7 Amps @ 250VAC. It has a 12VDC coil. The Relay contacts are available as .187" quick disconnect Faston connectors. The available contacts are the Common, NO (Normally Open) and NC (Normally Closed). This means that the circuit can either turn a device ON for a set time period or turn a device OFF for a set time period.

The PCB is double-sided, plated thru-holes, 3.00" long x 1.50" wide made of .062" FR-4 epoxy glass with 1-oz copper. It has green Solder Mask (LPI) on both sides with white Silk Screen on the Top side. It includes four mounting holes. The PCB traces for the Relay outputs are extra-wide on Top and Bottom sides for current-carrying capabilities.

This kit does not include the tools you will need to assemble the circuit. You will need tools such as a soldering iron, solder, wire cutters, etc. Because it can be purchased in many places for a dollar or two, this kit does NOT include the Laser Light Pointer that may be used to trigger the Timer.

This kit is also offered as a "Built & Tested" for those that do not want to build the kit themselves.

We supply the parts, you supply the ingenuity. You will get the following:

Type Part Description Quantity
IC LM311N, Single Voltage Comparator, DIP, 8-pin 1 ea
IC LM555N, Precision Timer, DIP, 8-pin 1 ea
Transistor 2N4401, NPN, Signal, TO-92 3 ea
Diode 1N4007, 1 Amp, 600V, Power, DO-41 2 ea
PCB Laser Relay PCB, NightFire 1 ea
Schematics Laser Relay Circuit, NightFire 1 ea
Resistor 100 Ohms, 1/4 Watt, 5%, Carbon Film 1 ea
Resistor 470 Ohms, 1/4 Watt, 5%, Carbon Film 1 ea
Resistor 1.0K Ohms, 1/4 Watt, 5%, Carbon Film 2 ea
Resistor 3.3K Ohms, 1/4 Watt, 5%, Carbon Film 5 ea
Resistor 10K Ohms, 1/4 Watt, 5%, Carbon Film 2 ea
Resistor Light Dependent Resistor 1 ea
Capacitor .01uF, 50v, X7R, Ceramic Disc 1 ea
Capacitor .1uF, 50v, X7R, Ceramic Disc 3 ea
Capacitor 2.2uF, 16v, 85° C, Aluminum, Radial 1 ea
Capacitor 100uF, 16v, 85° C, Aluminum, Radial 1 ea
Capacitor 220uF, 16v, 85° C, Aluminum, Radial 1 ea
LED RED, PCB Mount 1 ea
LED GREEN, PCB Mount 1 ea
Potentiometer 100K, Single-Turn, Thru-Hole, PCB Mount 1 ea
Potentiometer 4.7K, Single-Turn, Thru-Hole, PCB Mount 1 ea
Connector Faston, Quick Disconnect, .187" 3 ea
Relay 833H series, 125VAC, 7Amp, PCB Mount 1 ea