DIY WIRELESS LEDs

 

how to fix broken charging cables at home

in this tutorial, I am going to show you how to fix your broken charging cables at home.

most of the charging cables damaged due to the problem in the USB plug we can solve that by replacing the jack

buy USB jack from here

Servo tester using ic 555

in this tutorial, I am going to show you how to make a simple servo tester using 555 ic

circuit diagram

components needed

• ic 555
• 10k variable resistor
• 10uf,.1uf capacitors
• 220k,10k,1k resistors
• 1n4148 diodes

working

The principle behind this project is that a 555 timer can be configured in “Astable multivibrator mode” and used to generate the signal for the Servo Motor to work. The servo motors with pulse width modulated signal usually with a frequency of 25-50Hz. The angle of the servo varies according to the ON time  period of the signal(i.e, duration of the pulse). Hence, different servos have a different angle of rotation with respect to pulse widths mentioned in there in the datasheet. For example, a pulse of 1 ms, moves the servo towards 0 degrees while a pulse of 2 ms would take it to 180 degrees.

The 555 timer in Astable mode provides an oscillating pulse as output which is switching between high and low states at a certain frequency and pulse width. In Astable Mode the threshold pin and trigger pin of the timer are connected to each other which allows the output to toggle between high and low states. This can be analysed when we look at the internal structure of the 555 containing NPN transistors, and some voltage divider circuits,and flip-flops.

tv remote controlled home automation

in this tutorial, I am going to show you how to make simple home automation using tv remote

this circuit uses a TSOP1738 IR receiver module in normal condition, the output pin of the IR module is  High, which means the transistor  (bd140 PNP) is at logic Low. but when ir signal fall to tsop sensor the output of tsop goes low and transistor will turn on. the output of the transistor is connected to a toggle switch constructed with cd 4017 counter ic

circuit diagram

circuit diagram

componets needed

 

 

BC547B

Transistor BD140

1N4007

1K resistor

CD4017

TSOP

RELAY

100UF capacitor

MOTION DETECTION ALARM

Hello, friends in the tutorial I am going to show you how to make a motion detection alarm. the main component of this project is the PIR sensor

. 

overview of PIR SENSOR

 the main component e of this project is a PIR sensor. PIR stands  for passive infrared

This module consists of a pyroelectric sensor. As the name & indicates that is pyro means temperature, this sensor produces some energy when it is exposed to heat!

and the term passive means it generates signals without using the energy

it has a lens called fresnel lens and which is used to focus the signal to the sensor.

This module has 3 pins Vcc gnd and out and two potentiometers Right One is used to adjust the output delay time and left one is used to adjust the Sensing range of module

working principle

if a human or heated body comes in front of the sensor. the Sensor will detect movement  because the  heated body emits energy in the form of IR radiation and the PIR will capture that

working modes

this module has two modes.

the repeatable and non-repeatable mode .

in the non-repeatable mode when the sensor output is high and it goes low after the delay time is over.

But in repeatable mode. It will keep the output high until the detected Object is in the range 

CIRCUIT DIAGRAM

how to make conductive paint at home

Conductive paint is an ink that results in a printed object which conducts electricity. It is typically created by infusing graphite or other conductive materials into ink.

Conductive inks can be a more economical way to lay down a modern conductive traces when compared to traditional industrial standards such as etching copper from copper-plated substrates to form the same conductive traces on relevant substrates, as printing is a purely additive process producing little to no waste streams which then have to be recovered or treated.

vu meter using arduino

A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the signal level in audio equipment.so in this tutorial lets build a VU meter using Arduino.

things needed for this

• Arduino
• led
• aux cable
• jumper wire
• breadboard

circuit diagram

add an aux to a0 pin

connections

connect anodes of less to pin 2-13

connect cathodes together and connect to ground

connect aux cable a0  and ground

SOLDERING ON A DOT PCB

arrange in a round  shape and solder

download code

Simple arduino chaser

circuit diagram

download code from here

T rex runner Game controller

in this tutorial, I am going to show you how to make a google dino game automation



all off you know about the t rex aka dino game of google and it famous as no internet game.

the game is very simple just avoid the obstacles by jumping and its like super Mario run.usually to jump we use space bar manually.that's very old school for me...

so in this tutorial, I am going to show you how to make that in automatic that is an automatic controller.


please watch the making video for more details

first, watch this video

​the senor

here we want to detect the obstacle and jump to detect the obstacle I am using an LDR

so how an LDR detect that kind of obstacle?

the resistance of LDR changes according to light that is when

the dark time the LDR resistance is very high and vice-versa. so our obstacle is dark in colour so we can get different analog values . with that value with the help of a controller we trigger a servo.

servo is used to press the space bar. so that's the working principle

circuit diagram

I am using the analog read function of Arduino and I give conditions for servo triggers 

code

How to make Arduino based robotic board

basic circuit
order your pcb from jlcpcb
you will get 5pcbs just for 2$

HOW TO MAKE A SIMPLE IOT HOME AUTOMATION

Hello folks

In this blog, I am going to show you how to control your home appliances using smartphone aka kinda home automation.

For this, we need only

1. esp8266 aka  node MCU

2.2channel 5v relay module

The connection is very simple to Connect ground of esp to the ground of relay

Connect VCC to 3v of esp

Connect in1 to D2

Connect in2 to D4

HOW TO MAKE CUSTOM ARDUINO

we cant use Arduino board in every project because  Arduino is costly and also big size so...In this blog, I am showing how to make your own customized Arduino boardlet's start with a simple circuit

then using easyeda online PCB designer software i added rest switch power supply and attached led to pin 13 

https://easyeda.com/

after  designing the circuit i converted this circuit to pcb

then I upload gerber files to jlcpcb 

https://jlcpcb.com/

Components

• ATmega328p Microcontroller IC
• 28 Pin IC Holder
• 16 MHz Quartz Crystal
• Capacitors – 2 x 22pF, 100nF, 
• Resistors –  330Ω, ,10KΩ
• LEDs x 2 (Red and Green)
• Push Button (for Reset)
• 5V Regulator (7805)

you can download gerber and circuit from here

MEETUP 2.O