electronics projects

Hello guys, summer is going on, so let's make some water cooling project. What you need ...! 12v 20A power supply 12706 peltier modules (you can use 12715 for instant cooling) heat sinks ( i use computer cpu cooler) 12v fan  and some woods for mount everything small dc water pump and variable supply for water pump (you can use 5v or according to water pump rating supply) here is the some information about TEC plate....   Thermoelectric cooling  uses the  Peltier effect  to create a  heat  flux at the junction of two different types of materials. A Peltier cooler, heater, or  thermoelectric  heat pump is a solid-state active  heat pump  which transfers heat from one side of the device to the other, with consumption of  electrical energy , depending on the direction of the current. Such an instrument is also called a  Peltier device ,  Peltier heat pump ,  solid state refrigerator , or  therm...

Hello guys..... Here is how you can make led matrix.... basic circuit of 5x5 led matrix To make 5x5 led matrix you need 25 leds. connect +ve terminal in rows and connect -ve terminal in column as shown in picture.. You will get 10 terminals from this you can control every leds.  What you need to make Matrix Ring.... Arduino pro mini (all arduino boards will works)  Lithium Ion battery to power up Matrix Ring (i use 100ma 3.7v) 220  Ω resistor -------------                                                                      5  Flexible flat ribbon cable SMD push button SMD white led (you can use any color)                                              25 ...

Hello guys today lets interface i2c lcd to arduino. It is vary easy to use i2c lcd module with arduino. you just need to connect only 4 wire in stand of tons of wire from lcd to arduino. here is circuit diagram I2C LCD PIN          ARDUINO PIN vcc ---                                5v GND ---                             GND SDA   ---                            A4 SCL ---                              A5 and it is done now what you need just download i2c lcd library and insert library to arduino download library   from  hare   here is the code for printing anything on display ....... --------------------------------------...

Arduino is vary famous microcontroller. vary easy to control it here is codes which i use in videos. for digital input output.. .. /*  * simple digital input output test code  *   * ER BROS    *   * https://www.youtube.com/channel/UCY6KA8oFk1s36fyPiFEmedQ  *   * http://erbros1.blogspot.com/?m=1  */ int val; // create a variable void setup() {   pinMode(13, OUTPUT); // define 13 number pin as output   pinMode(8, INPUT); // define 8 number pin as input   digitalWrite(13, LOW); // make 13 number pin by default low } void loop() {   val = digitalRead(8); // this function will chack either HIGH or LOW   if(val == HIGH) {    // use if esle statment     digitalWrite(13, HIGH);    }   else {     digitalWrite(13, LOW);   } } for analog inputs /*  * simple digital input output test code  *   *...

This PWM generator is based on NE555 timer ic  Frequency range is 1Hz to 200kHz . 😍   voltage range is ~ 5v to 16v  here is the part list NE555 ic --  1 ic stand --  1 10K trimmer POT --  2 jumper --  1 male header pin -- 4 100uF capacitor -- 2 100nF capacitor -- 2 1uF capacitor --  1 1nF capacitor -- 1 1K resistor -- 1 LED -- 1  and here we go............... schematic diagram here is actual circuit  

Hello Friends,                  If you make alarm clock please read it carefully because of some important things you have to follow for your device safety. CIRCUIT DIAGRAM for library click  here SOURCE CODE  -------------------------------------------------------------------------------------------------------------------------- #include <Wire.h> #include <LiquidCrystal_I2C.h> #include <DS1302.h> LiquidCrystal_I2C lcd(0x3F, 16, 2); int Hour; int Min; int pset = 8; // pushbutton for setting alarm int phour = 9; // pushbutton for hour int pmin = 10; // pushbutton for minutes int pexit = 11; // pushbutton for exit of set alarm int buzzer = 6; int h; int m; int buttonforset = 0; // pushbutton state for setting alarm int buttonforhour = 0; // pushbutton state for hour int buttonformin = 0;// pushbutton state for minutes int buttonforexit = 0; // pushbutton sta...

Full charge indicator             Some time we charge battery directly to the charger but then we forgot or not sure the battery is fully charged.therefor battery is damage or blast.                       Here I make a easy and cheap circuit using simple op-amp,there is only 4 or 5 component are using in this circuit diagram You can show it Below, Components:- > 10k or 1k variable resistor > 1k resistor ×2 > IC 741(any op-amp IC) > RED & GREEN LEDs SET RANGE:- =>First connect full charged battery with circuit. =>Set variable resistor at, when RED led is turn in green (that initial time) =>That range is for that battery, after that you can connect other same battery and charger it that range. *you can use any op-amp IC *Also use 1k variable instead of 10k. For more daily use gadget circuit and technical support join our telegram group 👇👇👇...