DIY 5v Emergency Energy Production (Practical Electronics, Step by Step Projects Book 2)

Low Dielectric Loss 5. Strong Corrosion Resistance 8. Support Arduino MCU direct insertion,don't need any connections. Components Specification Quantity Ceramic Capacitor 0. DCV DC single power supply 2. Parameters Value 1 Name Infrared wireless remote cont LM adjustable DC power supply board. This is a particularly practical power pack that switches the voltage display or voltmeter function freely by twisting the voltage knob!

Please confirm that the lamp can be lit and then install the lampshade, because the lamp cover is not easy to remove it once installed. LED energy-saving lamps for its energy saving, environmental protection, long life a PWM output, you can set the frequency, duty cycle; Frequency is divided into four ranges, automatic switching: XXX no decimal point: Support high code rate 32kbps to kbps,including VBR 6. Support multiple EQ sound effect mode Output Voltage high level: Output Voltage low level: PWM Channels 4 6. Analog Input Channels 5 7. Micro USB 1 It's easy to download online program.

High sensitivity, high stability, low noise, radio module. A low-power FM stereo radio tuner electrical circuit, which has an i Send 51 STM32 arduino routine. Compatible with Arduino interface jack can be used. Compatible LCD Interface. Automatic Buck module provide a stable power supply. Applicable to unstable voltage source or voltage conversion. This is a mini-traffic light display module, high brightness, very suitable for the production of traffic light system model.

JDY is developed by 2. It uses serial communication interface, which is simple and quick to use. Yo u can apply JDY to products only needs to know the know You should solder it by yourself. Install tools you need: This type of karaoke board adopts PT chip, which plays the role of echo sound effects.

PT is a typical karaoke echo processing integrated circuit. The circuit can automatically open and close related appliances according to the brightness of light. Its output is controlled by the relay, which can directly replace the original manual switch. If you replace the photosens No-lock Low TTL level ou The pyroelectric infrared sensor anti-theft circuit consists of pyroelectric infrared sensor PIR, integrated operational amplifier LM, voltage comparator LM, alarm circuit and startup delay circuit.

Parameter Value 1 Work The following is a list of our available electronic DIY kits with pricing and a brief description of each. These kits come with all necessary components and PCB to assemble yourself. Call for discount on 10 or more kits. See and understand exactly how each works.

Good introduction to electronics. Both types of switch are built onto the one PCB so you can see and explore how each type works. A battery can power the touch switch 2 contacts but a power supply like Kit 4 must be used for the touch plate 1 terminal to work.

How To Make The Energy Meter

Introduces the Optocoupler-triac MOC and triac. Complete electrical isolation between input audio signal low voltage circuit and output light modulation mains supply voltage levels is achieved. Has feedback and delay circuit for robust operation. Needs 6V plug pack for most stable operation. Separate PCB for mounting the active units. Transmitter is crystal- locked at 40kHz for maximum efficiency. Allows you to send sound through plastic 1mm fibre optic cable. Two circuit boards with a microphone at one end and a speaker at the other.

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Will work over meters. An introduction to a basic but fully working combination lock. Separate touch pad with 9 pads. Lock is reset if an incorrect digit is pressed. Relay is capable of switching V. Circuit utilizes PIR detector and a light dependent resistor LDR to provide an optimized circuit that will detect motion up to 6 metres away. Operates on VDC. This is to allow the unit to be mounted inside a container with the detecting lens poking out and the controls facing inside the box. This kit uses a FET to switch on a tape recorder when the phone is picked up.

It will work with low voltage tape recorders as low as 1.

Eight LEDs are in a row. Step turns them on in turn by counting up using binary arithmetic. Mode and step pressed together will count backwards. If step is kept depressed the LEDs will rapidly count through the complete binary cycle in about 9 seconds. But that is only half the capability of the Kit. Pressing mode again will show the 2's complement binary pattern of the previously displayed binary number. The equivalent hex and decimal values of the 2's comp number are also shown on the 3-digit display.

Double-sided small PCB, 49mm x 79mm, 1. Display turns off after 1 minute with no keypress. Complete annotated program code supplied on floppy disk. Quite often the hobbyist needs to use a relay. The output of some device like a PIR has output pads for the alarm signal which must be connected to a remote switching device.

Or sometimes we have a Kit to test which needs a relay connected to it. We have standardized on two 12V relays from Goodsky. Kit 45 uses two miniature 1A relays. Our first ultrasonic movement detector - Kit 20 - has been very popular. This is another circuit design which we believe is more sensitive with fewer components. The transducers are mounted on the same PCB as the circuit. Manufacturers data on ultrasonic transducers. Uses a suction cup to attach to your telephone handset. Picks up the magnetic field produced in the earpiece by both sides of a telephone conversation.

Feeds into an 8 ohm speaker after amplification.

Volume control trimpot built in. This kit connects to the phoneline and records the number dialled tone dialling and the duration of the call on a 2x16 LCD. It also accepts audio input from an microphone, tape recorder or magnetic pickup. Ion generator powered by V mains supply. It uses the standard Cockroft-Walton multiplier circuit - a ladder of diodes and capacitors to pump the output voltage up to the level required.

Fuse built into the PCB. Uses ordinary needle work pins as the ion emitters. Neon indicator to show when the power is on. Reversing the 1N diodes makes it a positive ion generator. The user must supply a suitable box for this project. This is a high-voltage, mains supply project. The user must take extreme caution. A very useful kit. Specification sheet for the IR Receiver Module. This kit contains all the hard to get parts for a PIR motion detector.

Essential specs on REB sensor. Fresnel Lens , pcb-mounted. Note the four mounting lugs which fit into holes in the PCB. We are selling one type of module 4cm x 4cm, 1. When current passes through two different conductors, heat is produced in one and absorbed in the other. Peltier first described this in Modern semiconductor materials can make p-n junctions which produce large temperature differences.

This 4cm x 4cm x 4mm thick module contains p-n junctions connected electrically in series but thermally in parallel. Over 20 meters in sunlight. Four ranges set by jumpers. The problem has been traced to a change by the chip manufacturer. The two jumper-on option does not work.

No jumpers on or only one jumper on still works OK. The manufacturer says they will not be changing the chip at the moment. Do you have an old PC lying around the house which absolutely no one wants? Then you can convert it into a dedicated controller. Communicate with the real world via the parallel printer port on your PC. Simply connect printer cable from computer to Centronics connector on relay board.

Each relay has an LED to indicate when it is operated.

We provide two sets of complete, stand-alone software to control the relays: Linux software for Kit 74 has been written by James Cameron. You may get it at Quozl's Open Source Work. K75 showing temperature deg C or F and humidity. K75 demonstrating 4 AD conversion.

K75 with plug-in Counter and Timer module. K75 showing the motherboard under the LCD. Excellent practical as well as a learning tool. The 16C71 PIC has been discontinued. We are now using the 16C with the required slight code modification. Download annotated source code 16K. Scan of Kit 75b AD input demonstration board. This kit is a fully assembled and tested miniature PIR module with only 3 connections: Rated for 5- 10VDC input power. Output is an active high pulse of approx.

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Range up to 3 metres. Each is a simple well tried circuit: Each board has a PCB-mounted switch to convert the circuit from light to dark switching and vice versa. There is nothing original in these circuits - they have been around for years. Many electronic projects use a low-voltage circuit to control the mains power supply eg.

In most cases the signal is brought out to a pad or terminal on the PCB. It is left up to the user to "use a suitable relay" to make the actual connection to the mains. Well this kit is the answer. Both sides of the mains supply can be switched. A 5A fuse on one side is also included. This Kit uses a commercial 14 button remote control, unit to put an active low signal onto one of 14 output pins on a decoder IC. That is, when a button is pressed the pin corresponding to that button goes low. Normally, each of the 14 output pins is high. It is up to the user to use this information in their own circuit where remote control is required.

For example, to control up to 14 relays or to control the movement of a robot. We supply all the necessary extra components required for the decoder IC to function properly. No PCB is supplied. It is up to the user to breadboard their application then make their own PCB. We supply three sets of components: It just needs you to add 2 x AAA batteries. All required components for the microcontroller are supplied - a 12MHz ceramic resonator for the oscillator, resistor, capacitor and diode for the power-on reset circuit plus two 10K pullup resistors.

Use the parallel port of your PC as a real world interface. Includes 7 pages of documentation, schematic, heatsink, plastic box, and more! Scan of end panel pieces provided. The electronic equivalent of a mechanical music box. It is activated by light falling on an LDR. It then plays a range of tunes.

The kit can be placed anywhere you want to hear a tune when light shines on it; opening a cupboard or drawer, music box. M, M IC Specification. Comes with case and end panel pieces as shown in the photos. Uses serial port so it can be located over yards from the PC.