How to make emergency mobile charger from battery

  
Make a mobile charger for emergency where no electricity



It is diagram for connection


I use 9 v drybattery & some old charger wire to make this

Comments

Post a Comment

Popular posts from this blog

how to make 4x4x4 led cube using arduino

Image
To make 4x4x4 led cube using arduino you need arduino uno or arduino nano 3.0 parts list - Arduino uno or nano Resistor 100 ohom x4 wire vero board ( doted or line ) header male   L shaped cardboard & LED 64 piece defuse led any colour Total making process  described in this video Connection to arduino- Download Arduino code
Read more

Raspberry pi 3.5 inch LCD screen setup & install driver

Image
This tutorial for beginner raspberry pi user .It is very easy way to install driver for 3.5 inch touchscreen LCD. Before install driver You need A Raspberry pi 3B with raspbian OS because this Lcd screen works with only raspbian OS 1.First Download Txt file from here Save it to your raspberry pi desktop 2.Make sure you have internet connection on your Raspi 3.copy upper part of text from downloaded text file & paste it to terminal emulator Now driver will install & Lcd turn on but HDMI will turn off LCD & touch is working after automatic restart  4.To turn off Lcd & active HDMI ,copy lower part text from Downloaded text file paste it to terminal emulator .Now HDMI will active & Lcd turn off This is full details video for installation driver
Read more

How to Decode any IR remote ( TV,DVD,AC any other)

Image
Decoding IR remote Using this tutorial you can decode any Ir remote Hex code.and we can apply it our project also like home automation,robot control etc. You need- Arduino Uno or any other arduino board TSOP 1738 or 1838 small bread board jumper wire & for test a LED At first you have to add a library ( Download from here ) after download unzip it & paste folder to arduino library folder connect IR sensor to arduino like above  Schematic Now upload first code to arduino First code-- #include <IRremote.h> int IRpin = 8; IRrecv irrecv(IRpin); decode_results results; void setup() {   Serial.begin(9600);   irrecv.enableIRIn(); // Start the receiver }   void loop()  {      if (irrecv.decode(&results))      {      Serial.println(results.value); // Print the Serial 'results.value'       delay(10);      irrecv.resum...
Read more