electronics projects

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 state for exit of set alarm int activate=0; float temp; Time t; DS1302

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 👇👇👇👇👇 Just make it (DIY) ----------------------------------------------------------

SIMPLE LIVE WIRE DETECTOR           what is live wire detector It is simple sensor which is detect/sense minor megnetic fild(current) and indicat it, generally in live wire current is flowing and it is produse minor megnetic fild arounding wire that fild is detect that the current is flowing.           Use of live wire detector  It is use for detect live wire(phase wire) in our home,office or other place. we can also check that in live wire current is flowing or not . and also check path of wireing in our house and other place.   DIAGRAM COMPONENTS:-  1M OHM RESISTOR 100K OHM RESISTOR 220OHM RESISTOR BC 547 TRANSISTOR x3  3v or 9v BATTERY COPPER STRIP OR COIL     Using all components make simple tiny circuit as following circuit diagram. after connect battery take that circuit near live wire or our switch bord indicator light is blowing                       that is our simple live wire detector you can make it easily and use it in daily life like en