Off Delay Timer | how to make off delay timer | how to make delay timer | delay timer

The electronics king

21 Aug 202306:05

Summary

TLDRThis instructional video teaches viewers how to build an automatic LED timer circuit. It involves using a 555 timer IC, a capacitor of 25V microfarads, and a few resistors to set the on and off timing of the LED. The video guides through the assembly of the circuit, including connections to a variable resistor to adjust the timing. It also demonstrates how to connect the circuit to a battery and a switch, and later to a relay module to control a 100W bulb, showcasing the circuit's practical application.

Takeaways

😀 The video is a tutorial on making an 'off-on timer' using an LED and a microcontroller.
🛠️ The project requires a 555 timer IC, a capacitor with a value of 25 volts microfarads, and other basic electronic components.
🔌 Connections are made between the components, including the 555 timer, capacitor, resistors, and an LED.
🔄 The LED will turn on and off automatically after a set time period, which can be adjusted using a variable resistor.
🔧 A variable resistor with code 104 is used to control the timing of the LED's on-off cycle.
💡 The LED's behavior is demonstrated with the automatic turn-off after a period of time, and then it can be turned on again manually.
⏱️ The time duration for the LED to stay on or off can be adjusted by changing the value of the variable resistor.
🔌 The video also includes connecting the circuit to a battery and using a switch to control the power supply.
🔌 A 5-board relay module is introduced to control a 100-watt bulb, demonstrating the application of the timer circuit in a practical scenario.
🔗 The relay module is connected to the timer circuit, with specific wires connected to different points of the circuit for control.
👨‍🔧 The tutorial concludes with a demonstration of the completed circuit controlling the bulb's on-off state, emphasizing the adjustability of the timing.

Q & A

What is the main purpose of the project described in the script?
-The main purpose of the project is to create an off-on timer using an LED that turns on and off automatically after a certain period of time, with the duration being adjustable through a variable.
What is the first component mentioned in the script for building the circuit?
-The first component mentioned is a 555 timer IC, which is a key component for creating the timer circuit.
What is the value of the capacitor used in the circuit, and what is its role?
-The capacitor used has a value of 25 volts and is connected to pin 2 of the 555 timer. It plays a crucial role in determining the timing interval of the on-off cycle of the LED.
How are the connections made for the 555 timer in the circuit?
-The connections are made by connecting the positive wire of the capacitor to pin 2, the negative wire to pin 6, and then connecting pin 2 to pin 6. Additionally, pin 3 is connected to the positive wire of the LED and pin 2 to the negative wire of the LED.
What is the function of the variable resistor mentioned in the script?
-The variable resistor, with the code 104, is used to adjust the timing of the LED's on-off cycle, allowing the user to control the duration for which the LED stays on or off.
How is the LED connected in the circuit?
-The LED's negative wire is connected to pin 3 of the 555 timer, and the positive wire is connected to the variable resistor.
What is the purpose of the power connections made to the 555 timer?
-The power connections are made to provide the necessary voltage to the 555 timer for it to function. The positive wire is connected to pin 8, and the ground wire, which is negative, is connected to pin 1.
What is the role of the switch mentioned in the script?
-The switch is used to control the power supply to the circuit. When the switch is turned on, the LED will turn on and then automatically turn off after the set time interval.
How is the battery connected to the circuit in the script?
-The negative wire of the battery is connected to the negative terminal of the circuit, and the positive wire is connected through a switch to the positive terminal of the circuit.
What is the additional application of the circuit described towards the end of the script?
-Towards the end of the script, the circuit is modified to control a 100-watt bulb using a 5-board relay module, demonstrating an application of the timer circuit for controlling higher power devices.
What are the components connected to the relay module in the final part of the script?
-The components connected to the relay module include a red wire connected to the VCC, a blue wire connected to the input, and an orange wire connected to the ground, which is used to control the 100-watt bulb.

Outlines

00:00

🛠️ Building an Auto-Off LED Timer Circuit

This paragraph describes the process of creating an auto-off LED timer circuit. It starts with the acquisition of a 555 timer IC, a capacitor with a value of 25 microfarads, and other necessary components. The speaker explains how to connect the components, including the capacitor, resistors, and the 555 timer, to create a variable timing circuit. The LED is connected with its negative wire to pin 3 and the positive wire to the power source. The circuit can be adjusted to turn the LED on and off after a certain period, and the speaker demonstrates how to modify the timing with a variable resistor. The video also shows how to connect the circuit to a battery and a switch to control the power supply.

05:02

🔧 Adjusting the Timer and Testing with a Bulb

In this paragraph, the focus shifts to adjusting the timing of the LED timer circuit and testing it with a 100-watt bulb. The speaker mentions the need for a 5-board relay model to handle higher power loads. The circuit is connected to the relay, and the speaker demonstrates how to connect the relay's input wire to the LED's negative wire. The video shows the successful operation of the relay module when the switch is turned on and off, adjusting the timing to control the duration for which the bulb remains on. The speaker encourages viewers to like the video, subscribe to the channel, and turn on notifications for updates.

Mindmap

Keywords

💡DIY Timer

A DIY (Do It Yourself) Timer is a device created by individuals for specific purposes, often customized to their needs. In the video, the main theme revolves around creating a timer for an LED light that turns on and off automatically after a set period. The script describes the process of building this timer using various electronic components.

💡LED

LED stands for Light Emitting Diode, a semiconductor device that emits light when an electric current passes through it. In the context of the video, the LED is the device that the timer controls, turning it on and off at specified intervals, demonstrating the functionality of the timer being built.

💡Variable

In the script, a variable refers to a component or setting that can be changed to modify the behavior of the timer. Specifically, it is used to adjust the duration for which the LED stays on before it automatically turns off, allowing for customization of the timer's operation.

💡Capacitor

A capacitor is an electronic component that stores electrical energy in an electric field. In the video, a 25 volt microfarad capacitor is used, which plays a crucial role in determining the timing interval of the LED's operation, as mentioned in the script.

💡Resistor

A resistor is a component that opposes the flow of electric current in a circuit. The script mentions using a 1k ohm resistor, which is connected in the circuit to control the current and, by extension, the timing of the LED's operation.

💡Microcontroller

A microcontroller is a small computer on a single integrated circuit designed to govern specific operations in electronic devices. In the video, the microcontroller, specifically with code 104, is used to control the variable resistance and, consequently, the timing of the LED's on-off cycle.

💡Circuit

The term 'circuit' refers to the path that electric current follows through a series of components. The video script describes building an advanced circuit that includes a microcontroller, capacitor, resistor, and LED to create the automatic timer.

💡Power Supply

A power supply provides the necessary electrical energy to operate a device. In the script, the power supply is connected to the completed circuit, enabling the timer to function and control the LED's operation.

💡Relay

A relay is an electrical switch that can be controlled by a separate circuit, allowing it to operate high-power devices safely. In the video, a relay module is used to control a 100-watt bulb, demonstrating the application of the timer in a practical scenario.

💡Connection

Throughout the script, the term 'connection' is used to describe the process of linking different components of the circuit, such as attaching wires to pins or terminals, which is essential for the proper functioning of the timer.

💡Switch

A switch is a device that breaks or makes a circuit, controlling the flow of electricity. In the video, a switch is used to manually turn the power supply on and off, thereby controlling the operation of the timer and the LED.

Highlights

Creating an 'off-on timer' that automatically turns off after a certain time when turned on.

The timer's duration can be changed using a variable.

Starting with the basics and moving to advanced circuits.

Using a 555 microcontroller for the timer circuit.

Inclusion of a 25-volt microfarad capacitor in the circuit.

Connecting the positive wire of the capacitor to pin 2 of the 555 microcontroller.

Connecting the negative wire of the capacitor to pin 6 of the 555 microcontroller.

Using a 1k ohm resistor to connect pin 2 to pin 8 of the 555 microcontroller.

Connecting pin 6 to pin 7 of the 555 microcontroller.

Setting up a variable resistance with code 104.

Connecting the positive wire of the LED to pin 3.

Connecting the positive wire of the LED to the 5V power supply.

Connecting the negative and positive wires to complete the power supply for the circuit.

Demonstration of the LED turning on and then automatically turning off after a set time.

Adjusting the duration of the timer using a variable to make it shorter or longer.

Practical application of the timer with a 100W bulb using a 5-board relay model.

Connecting the relay module to the timer circuit for controlling the bulb.

Demonstration of the relay module controlling the bulb when the switch is turned on.

Adjusting the timer to control the duration for which the bulb stays on or off.

Encouraging viewers to like the video, subscribe to the channel, and turn on notifications for updates.