Crystal Oscillator Kit by NightFire Electronics
This kit consists of a one-transistor Colpitts Crystal Oscillator and a one-transistor, emitter-follower output buffer/amplifier. You get all the parts you see, including the PCB, plus a schematic and several different crystals to experiment with. It runs off of a 9-volt battery which is not included. This oscillator can deliver up to a 3-volt signal into 100 Ohms: the higher the frequency, the lower the output amplitude. It has been tested with crystals from 3MHz to 50MHz.
This kit is also offered with a "Built & Tested" option for those that do not want to build the kit themselves.
The PCB is approx 3.0" x 1.5", .062" thick, FR-4 with plated Thru-Holes. You not only get to build this great circuit, but it can also be used as a building block for home-made receivers and transmitters. This can also be used as a crystal tester by plugging in crystals instead of soldering them in.
Below is a detailed introduction to component identification and kit assembly.
LM555 Timer with 12V Relay Kit by NightFire Electronics
This is the Timer with Relay Kit. This circuit is designed to turn on a Relay for a definite time period up to a few minutes (capacitor determined)and then the Relay will automatically turn off. The circuit is based on the LM555 Precision Timer that is triggered by a momentary switch contact. The switch may be a physical switch or it may be the output of other circuitry. There is also an on-board LED to indicate when the Relay is energized.
A normally-open switch is required for the Trigger. When the switch is open or not made, the Relay circuit is OFF and the Relay outputs are with the Com connected to the NC (Normally Connected) pin. When the Trigger input is momentarily connected to Ground, the Timer circuit will output a single pulse which will turn on the Relay for a certain time. This time is adjustable from a few seconds to a few minutes or more. The circuit timing values may be increased to lengthen the time. The Relay contacts will switch to Com connected to NO (Normally Open). After the time period is over, the Relay will turn back off. Once the Timer is triggered, additional trigger pulses will be ignored for the duration of the Timer pulse.
The Relay is an 833H series or JS1 Series SPDT relay with Form 1C contacts rated for 7 Amps @ 250VAC. The coil voltage is dependent on what version you get. This version has the 12v Coil. The Relay contacts are available as .250\" 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.
This kits is also offered as a "Built & Tested" for those that do not want to build the kit themselves.
The PCB is double-sided, plated thru-holes, 1.50\" long x 2.50\" 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.
Shelly 1 ,WiFi-operated Relay Switch - UL 4 PACK
Shelly 1 is 16A relay switch perfect for lightning and appliances with pre-set ON/OFF functions. But it can do way much more! The WiFi Relay Switch Shelly 1 may control 1 electrical circuit up to 3.5 kW. It is intended to be mounted into a standard in-wall console, behind power sockets and light switches or other places with limited space. Shelly 1 may work as a standalone Device or as an accessory to another home automation controller. Shelly 1 allows remote control of electric appliances through mobile phone, PC or home automation system. Shelly 1 allows you to turn on/off any electrical device remotely. You can turn your heating, lights, power sockets, water heaters ON or automatically cut the power off in case of a malfunction at any time. You can control all the household appliances you own by cutting the power on or turning it on with just one click on your smartphone. Shelly 1 uses WiFi to connect to the devices controlling it. They can be in the same WiFi network or they can use remote access (through the Internet). KEY FEATURES: HIGH COMPATIBILITY - Control all your home appliances with your voice. The Shelly 1 OS are Google home and Amazon Echo Compatible. WEEKLY SCHEDULING - Create custom daily schedules for your devices. OPEN SOURCE - Use the power of Mongoose OS to make your own application. Make your Arduino project live and usable in your automation project. Also, you can share your experience with developers all over the world. CONTROL APPLIANCES WITH PRE-SET ON-OFF FUNCTION - Control wide range of home appliances with the help of the free Shelly Cloud application. Check your home appliances status anytime and anywhere and control them on and off. 24/7 APPLICATION SUPPORT - Free iOS/Android Shelly Cloud application. You can check your devices status anywhere and anytime. Remotely turn on or off the connected devices.
Audio Amp LM380N-14 Kit - RCA Input & 2 Pin Screw Termial Output
This is the 2.5 Watt Audio Power Amplifier Kit. It includes the very popular LM380 Audio Power Amplifier, 14-Pin IC rated at 2.5 Watts. This is a single-channel amplifier with RCA inputs and 2Pin Screw terminal outputs. It includes a panel-mount volume control so that the device can be mounted in an enclosure.
This Amp Kit has been designed so that there are 3 different style of input connectors and 2 different styles of output connectors to choose from. For example, you may chose a 1/4" Phono input and a 2-pin Screw Terminal output. Or you may chose a 2-pin Screw Terminal for the input and an RCA jack for the output. This gives you great flexibility.
It was designed to fit in several of the popular enclosures, such as the PAC TEC FXT-4624 or the Hammond 1598BSGY. This is probably the world's most popular Audio Power Amplifier Integrated Circuit ever made.
The gain is internally fixed at 34 dB. A unique input stage allows ground referenced input signals. The output automatically self-centers to one-half the supply voltage. The Output Power is rated for 2.5 Watts with a THD of 0.2%.
Uses include MP3 output amplifiers, guitar amplifiers, simple phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radio, small servo drivers, power converters, etc.
This kit is also offered with a "Built & Tested" option for those that do not want to build the kit themselves.
The PCB is 1.2" long x 3.0" wide made of .062" FR-4 epoxy glass. All holes are plated through. The traces are wide to withstand numerous circuit changes.
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.
IC LINEAR - LM3915 LED Driver - 2 piece
IC LINEAR - LM3915 LED Driver - 2 piece
Constant Current Power Supply Kit 100mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
LED Tester - Constant Current - 25mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
LED Tester - Constant Current - 15mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
LM386 Audio Amplifier Kit With Tone Control , 1/4" Jack Input & 2 Pin Screw Termial Output
This is the LM386 Audio Amplifier Kit with Tone Control. It includes the very popular LM386 Audio Power Amplifier IC, 8-Pin. This is a new 2014 designed PCB for the LM386 Audio Amplifier IC, schematics, and the parts to build it. This is one of the world's most popular Audio Power Amplifier Integrated Circuits ever made. This Amp Kit has been designed so that there are 3 different style of input connectors and 2 different styles of output connectors to choose from. For example, you may choose a 1/4" Phono input and a 2-pin Screw Terminal output. Or you may choose a 2-pin Screw Terminal for the input and an RCA jack for the output. This gives you great flexibility. This LM386 Amplifier circuit has provisions for the output gain to be adjusted anywhere from 20 to 200. A unique input stage allows ground referenced input signals. The output automatically self-centers to one-half the supply voltage. It has a low THD rated for 0.2 % at 125mWatts. See the specifications for all of the data. Uses include MP3 output amplifiers, guitar amplifiers, headphone amplifiers, simple phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radio, small servo drivers, power converters, etc. This kit is also offered with a "Built & Tested" option for those that do not want to build the kits themselves. The PCB is 1.4" long x 2.30" wide made of. 062" FR-4 epoxy glass. All holes are plated through. The traces are wide to withstand numerous circuit changes. 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. Below is a detailed introduction to component identification and kit assembly.
Fire Truck Siren Sound Effect kit
This kit comes with all the components and schematic needed to complete the circuit. The kits is a very easy unit to assemble and could be used in many different ways! The Kit can be powered by 5 Volts DC to 12 Volts DC. A 9 Volt DC battery Clip is included with the kit for easy 9 Volt DC access. *** Speakers not included in the kit *** An 8 ohms speaker is best to use for this kit.
LED Tester - Constant Current - 10mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
LED Tester - Constant Current - 50mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
LED Tester - Constant Current - 40mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
LED Tester - Constant Current - 20mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
LED Tester - Constant Current - 30mA
This is the Constant Current Power Supply Kit. This kit is designed to supply a constant DC current to your load. It uses the LM317T in a constant-current configuration. The current regulation is typically 0.01% per Volt. It will deliver a very steady current, even under varying loads.
Constant Current Power Supplies maintain a constant CURRENT to the output load by varying the output voltage. As your load varies in resistance, such as when a load heats up or cools down, the output voltage varies just enough to keep the current across your load steady.
The Load Resistance be anywhere from 1 Ohm to 190 Ohms with a 12vdc input and the output current will remain a steady 100mA. Different input voltages will affect what Load Resistance are permissable. A lower input DC voltage may be used as long as the input voltage is 2.5v higher than the output voltage. The minimum input voltage allowed is 4.0vdc.
The input voltage can be anywhere from 4v to 25v. The higher voltage inputs may require a heatsink on the LM317T. A heatsink is not supplied with this kit.
Please select the Constant Current value you need. Available currents are from 10mA to 250mA. If there are any other values you need, please contact us. These are fixed values that the power supply will deliver, they are not adjustable.
This kit is also offered as a Built & Tested for those that do not want to build the kit themselves.
The PCB is small and compact. It is 1.0" x 2.0" with 2-pin screw terminals for the input and the output. It also has 2 mounting holes. The PCB is 0.062" thick, double-sided, plated thru-holes with silkscreening on the top side. This is a low-profile kit and is about 1/2 inch in height when built. You get the PCB, all of the components, and a schematic. This is a kit which will require that it be assembled. You will need tools, such as, a soldering iron, solder, wire cutters, etc.
EMF Ghost Detector - Single
This is the individual Ghost Detector. This Ghost Detector is an ultra-sensitive EMF Detector that can be used in your Paranormal investigations. You will be amazed at what these devices can detect. With some experimenting, you can discover when and where to place these Ghost Detectors for the best results. These are small enough that you can place them almost anywhere. The LED will come on as long as it detects a presence. It can come on briefly or stay lit longer, depending on the electrical fields in the area. You will get 1 built & tested device. Each detector will require one 9v Battery; there are no batteries included with this set. For those technical folks (and I'm one) this circuit is a three-stage, un-tuned, wideband, Darlington LED amplifier. There are no pulse-stretching circuits to extend the LED On-time. If there is enough energy present to forward bias the first stage, then all hell will break loose, figuratively speaking, of course. Under right conditions, it can pick up your aura (static electricity) as you walk across your rug. We cannot be held responsible for whatever may be conjured up by this, you're on your own. If you feel a cold chill and the LED turns super bright and stays on... run!
18 LED Module 3V to 12V Kit Red & Blue
18 Jumbo (10mm) LEDs with SMT Resistors. All of the LEDs are in parallel and draw about 400mAmps at 12 volts. The LED Module can be used as an emergency light which can be seen for a very long distance.
This LED Module can be powered as low as 3Volts DC, but better at 5V DC to 12Volts DC for brightest Effect.You can connect multiple LED modules together. The PCB is 3.58" x 1.80" and is .65" high when built. No heat sink is requiered with this module.
It is also offered as a Built & Tested for those that do not want to build it themselves.
