Simple Electronic DoorbellMaking a simple electronic doorbell involved the following aspects:
1. ** Elements and Principles **
- The core component was the music integrated circuit, which was a large-scale complementary symmetrical metal-oxygen-semiconductor integrated circuit. It stored music inside, and the contents of the read-only memory determined the music stored. For example, it has external power supply positive and negative pins (DV and Vs), internal oscillation external oscillation resistance pins (osC1, OSC2, some integrate the oscillation component inside the chip and cannot be externally adjusted), trigger (TL, can use high level or positive pulse trigger), music signal output (OUT) and other pins.
- There were also transistors (such as 9013 or 9014) that could amplify the electrical signal output by the integrated circuit to ensure that the speaker emitted a louder sound. The speaker (B) was a sound component, the LED was used for light display, and it flickered with the music. There was also a button switch (SSS) and an AC bypass bypass circuit to prevent the music integrated circuit from being triggered by noise induction.(C, it could also be replaced by a 300g-510g 18W carbon film resistance, or directly connected between the music integrated circuit's voltage and voltage pins).
2. ** Work process **
- Every time the button switch SSS is pressed, the trigger terminal TL of the music integrated circuit A will receive a positive pulse trigger signal. When the music integrated circuit A works, its output terminal OUT will output the stored music electrical signal once. After being amplified by the triode ZT, it will drive the loudspeaker B to sound. At the same time, the light-emitting LED installed on the shell panel will flash with the rhythm of the music.
3. ** Creation process example (Take teaching tasks as an example)**
- First of all, he had to understand the characteristics, working principle, types, and other knowledge of the electronic components of the electronic doorbell.
- Learn how to test electronic doorbell components.
- Confirm the installation plan, such as choosing a suitable location (such as the door frame or the wall, consider the connection and power supply requirements) to install the electronic doorbell host and connect the various components, connect the power supply (you can choose a special transformer or directly connect to the household power supply), commission and test (check whether the ringtone, indicator light, intercom and other functions are working normally after the power is turned on, and if necessary, commission and trouble-shooting), arrange the wires, and finally thoroughly check the appearance, function, and safety of the electronic doorbell.
The novel "Mars of Paradise" is equally exciting. Everyone is welcome to read it!
What are the key elements in Blink 182's origin story?One key element is their geographical origin in California. The local music scene there influenced their sound. Another is the friendship between the band members which was based on their mutual love for music. Also, their initial foray into the local gig circuit was important as it helped them gain experience and a fan base.
3 answers
2024-11-08 20:59
Making a homemade doorbell is simpleThere were many ways to make a doorbell, some of which were relatively simple.
One method was to use 9300 music films to make a doorbell. The materials needed were speakers, printed circuit boards, transistors, switches, metal sheets, screws, plastic shells, batteries, 9300 music films, wires, and tools such as a screwdriver, an electric iron, a sharp-nosed pliers, and a tin wire. The production steps were as follows: First, install the battery box, install the plastic shell and put the battery into it; then assemble the switch, using metal sheets, wires, and a small white plastic box to assemble a switch; then insert the triode into the printed circuit board and welding, and cut off the excess pins; install the wires on the printed circuit board, and then welding the switch and the wires on the printed circuit board together; then, the speaker and the wires on the printed circuit board are welding, and the battery box and the wires on the printed circuit board are welding; finally, the shell is sealed.
There was also a method to make a doorbell with a doorbell. The experimental device required a doorbell, a bread board, a button (expansion experiment), and a number of colorful bread boards for rope skipping. Plugging the passive Buzzer into the bread board, connecting the positive pole to pin 8 on the development board, and connecting the negative pole to GND, then uploading the code to the development board. In terms of programming, first set the digital 8 pin that controls the buzzing, set the digital IO-pin mode as the output, and then control the delay of the high and low levels in the loop program to make the buzzing sound at different frequencies. When making a push-button doorbell, you also need to set up input and output pins and other operations. When the button is pressed (high level), the doorbell will emit a specific frequency of sound, otherwise it will not sound.
In addition, old phones could also be modified into doorbell phones. However, the information did not mention the specific production process in detail. It only showed the feasibility of this idea.
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blink of an eye"In the blink of an eye" is a Chinese idiom, which means that it is a very short time. This idiom is usually used to describe how time passes quickly, like the blink of an eye. In literary works, this idiom was often used to describe the rapid development of a character's actions or events.
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What are the key elements in 'one more time blink 182 story'?One key element could be their music evolution. As they keep coming back 'one more time', their sound has changed a bit. Another is their fan loyalty. Despite the hiatuses, fans keep coming back for more. Also, their live performances play a role. They always give it their all on stage 'one more time' they perform.
What is Blink Novel?Well, Blink Novel could refer to a lot of things. It could be the name of a new startup in the publishing world that focuses on novels. Maybe they have a special way of presenting novels, like using a new format or technology. It could also be a self - published series by an indie author who named it Blink Novel to make it stand out.
What are some 'Ring Doorbell horror stories'?There was a case where a hacker somehow gained access to a Ring Doorbell. They were able to talk to the people inside the house through the device. The family was terrified as they didn't know who this person was or how they got access. They immediately unplugged the doorbell and reported it to the police. It made them feel very unsafe in their own home.
2 answers
2024-11-23 18:03
What are some scary doorbell camera stories?There was this instance where a family's doorbell camera caught a shadowy figure running towards the door and then disappearing. They were really freaked out as it happened multiple times over a few nights. They even called the police, but nothing was found outside when they checked. It was really strange and scary.