Page 3 about pir | |
| Total Found: 154 |
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FM Broadcast Audio Transmitter The circuit consists of a frequency modulated oscillator, an audio preamplifier with pre emphasis to supply the frequency modulating signal, and a buffer amplifier to drive the antenna connector FM radio pirate Introduction to.... -
Moderately priced Passive Infrared PIR Sensor modules are now widely available. By using these readymade and pre-configured PIR sensors, even an average el.... -
Bus Pirate is a great tool for exploring new chips using your PC, without the need to integrate the chip into a MCU project. Once I received my unit, i decided to put it to the test by exploring an accelerometer with I2C/SPI interface the MMA7456L from.... -
The circuit is a LED driver which responds to ambient lightas wellas to the presence of any intruder, and varies its illumination accordingly, lets know more. Also I would like to have an ambient sensor to switch on and off and a proximity sensor to switch.... -
This is a simple SCR based burglar alarm circuit. Its features include automatic Exit and Entry delays - together with a timed Bell cut-off and Reset. It`s designed to be used with the usual types of normally-closed input devices such as - magnetic-reed.... -
The following circuit shows about PIR Sensor Timer Circuit Diagram. Features: simple circuit, more accurately, efficient. Component: Diode, .... -
This circuit came from a 14 Watt Commercial Electric spiral bulb from Home Depot. In fact, I drew it in that way because it was layed out very well, so much credit should go to Sam Goldwasser. It is a rather interesting oscillator circuit which I will.... -
After all job of building the prototype and making the sketch work, it`s the time to build the circuit. It`s not the objective to explain in detail how to make printed circuit boards, but only a superficial explanation about it, besides, of course, to.... -
This is an old version, see the latest version on the documentation wiki. Now you`ve got one of Hack a Day`s Bus Pirates, what do you do with it? Learn about 1-wire, I2C, and SPI EEPROMs with the 3EEPROM explorer board (we pronounce it THREE-PROM, emphasis.... -
This little circuit can be used to dim lights up to about 350 watts. It uses a simple, standard TRIAC circuit that, in my expirience, generates very little heat. Please note that this circuit cannot be used with fluorescent lights... -
Construction of a radio telephone integrator and created my first radio phone / repeater. I had been playing with electronics and radios since that first receiver I had built back in 1973. With that simple receiver and a random wire antenna I had discovered.... -
The Cmos 4001 has four - independent - two-input NOR gates. The four gates are divided into two pairs. Gates 1 & 2 are wired together to form a type of latching circuit. When the alarm is triggered - they will latch - and sound the buzzer. Gates 3 & 4 are.... -
This is a single zone alarm - with automatic exit, entry and siren cut-off timers. It will accommodate all the usual types of normally-closed input devices - such as magnetic reed contacts, foil tape, PIRs etc. But it`s easy to add a normally-open trigger..... -
As shown in the figure, it isa sensing automatically lightmade by newHN911L pyroelectric infrared detection module. The HN911L integrates high - sensitivity infrared sensors, PIR, amplifiers, signal processing circuit andoutput circuit. Itisable to remote.... -
A drink mixer inspired by BAR2D2, I am using a gravity fed pump that is capable of running on a 9v battery. I am using a circuit with a 555 timer to control how long the pump will run. When I hook the pump directly to the battery the pump runs perfect. When.... -
The circuit is shown as the chart. It is a control circuit which composed of infrared specific integrated circuit KC778B and KC778B is the center of the circuit. It s surrounded by a pyroelectric infrared sensor head PIR, light control and light control.... -
The objective of this project is to use inexpensive PIR sensor to detect if a human has moved. To build this project I use a PIC18F25K20 microcontroller to detect if the sensor had change state and it will emit a sound from the speaker or piezo, the MCU also.... -
This is the second part of the square root algorithm. It was developed in one month during the final stages of finishing this web site and reviewing this document for publication. While Part I dealt with an empirical discovery for a sequential algorithm to.... -
This is a simple single-zone burglar alarm circuit. Its features include automatic Exit and Entry delays. It`s designed to be used with the usual types of normally-closed input devices such as - magnetic-reed contacts - micro switches - foil tape - and PIRs..... -
The inspiration for the project came after attending the HamRadio 2000, Millenium Ham Meet @ Hyderabad (December 22, 23 & 24) where I met Grand Masters like VU2NR and VU2RM, OM Raju and OM Rao respectively. VU2NR`s newest design the NR-80 inspired me on.... -
The heart of the motion detector movement detection circuit is motion detection chip IC1 (KC778B). The signal frequency from PIR sensor is low (0.1Hz ~ 10Hz) while the band is very wide, the chip will optimize it. The working voltage of KC778B is 4V ~ 15V,.... -
This is a simple SCR based burglar alarm circuit. Its features include automatic Exit and Entry delays - together with a timed Bell cut-off and Reset. It`s designed to be used with the usual types of normally-closed input devices such as - magnetic-reed....
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With the inspiration from lab 3, Digital Waveform Synthesis, I want to make a project that can process and playback music. Some songs are pre-stored in memory. They can be played back just like a real piano keyboard. Also the user can input a song on a.... -
This project is inspired by the DPRG IRPROX project. They have a pretty good PCB layout and idea. I would like to thank them for posting their project for all of us to see and learn from, I wouldn`t have started PIC programming without them, or at least not.... -
The goal of this project was to make an interactive baseball game inspired by pinball. There is a solenoid-powered bat and a pitching mechanism that utilizes a motor and lever arm setup. Both of these are controlled by buttons so that two people can play.... -
Great idea to remove the core of the HV-transformer, that increases the frequency and the step up rate still seems to be good enough. Do you hear any singing or screeching when your circuit is on I also saw that the spiral type CFLs are specially good for....
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Xenon lamp, strobe light circuits, xenon strobe, photo flash, photoflash,schematics or diagrams, all free to use. My inspiration came from a strobe circuit that was in a school fire alarm.... -
Initially I chose another infrared sensor for test, PIR Motion Sensor, which was to detect any motion in front of the sensor but it turened out not so sensitive. So that I looked at this QRD1114 IR Sensor for substitute. In this test, I used both as digital.... -
Hello, everyone, new kid on the block here After some tube amp reparations, fixes and minor upgrades (re-capping, fixing bias problems, various.... -
Since I have read an article on todbot blog, I bought a couple of Wii Nunchucks from ebay. I don`t remember how much I paid for them, but it was much....
