mousa

This is simple phone ringer circuit using IC 4060. Can run it by 5 to 12v and its power consumption is very low, lower than 10mA. You can use any other PNP transistor rather than S9012. Parts list: IC 4060 Transistor S9012(3pcs) Capacitor 3.3nF Resistor 13k (3pcs) Resistor 100k Potentiometer 100k Buzzer

This is a beautiful sequential LED flasher (LED chaser) that also called KNIGHT READER CIRCUIT. Flashing speed can changed by changing the value of capacitor or 33K resistor.  The circuit run by 5v and draw very low current lower than 10mA. You can run the circuit by 12v battery but you have use 1K resistor rather than 470ohm resistor to LED protection. Parts list: IC4017 IC555 Resistor 470 ohm Resistor 33K Diode 1N4148(8pcs) Capacitor 2.2uF LEDs(11pcs)  

Arduino Gas leakage sensor with LCD display Parts list: Arduino board https://goo.gl/XR3mXG LCD display 16x2 https://goo.gl/yTjFJS Buzzer https://goo.gl/RgvYcu Resistor 220 ohm (Resistor kit https://goo.gl/p4JvQY ) MQ-2 gas sensor module  https://goo.gl/eFg3Se Potentiometer 1K (Potentiometer Kit https://goo.gl/z5b4X1 ) Connecting wires https://goo.gl/BVC3pM Breadboard https://goo.gl/rGuHzY Please subscribe to my YouTube channel here:  https://www.youtube.com/c/EngMousaalkaabi?sub_confirmation=1 #include <LiquidCrystal.h> LiquidCrystal lcd(7, 8, 9, 10, 11, 12); int potPin = A4; int potValue = 0; int buzzer = 6; void setup() {     lcd.begin(16, 2); // lcd rows and columns     lcd.print("GAS SENSOR");     pinMode(6, OUTPUT); } void loop() {     potValue = analogRead(potPin);        lcd.setCursor(0, 1);     lcd.print("Value = ");     lcd.print(potValue);  ...

By this Arduino project you can run any electric devices (AC and DC) by using any IR remote control in your home. (remote control of TV, satellite, air conditioner, etc) Since each IR remote control button have certain frequency, so you have to determine that and put that in the code.   You have to follow this steps: 1-connect your relay module (or LEDs) and infrared receiver module to your Arduino board as shown in following figures 2-then upload the code (in below of this page) to your Arduino board and open the serial monitor 3-then press any button of your remote control (put the remote toward the IR receiver) 4- put the number that appears in serial monitor (in prior step) in your code and repeat this work for each buttons then upload the code again  5-Now it is ready to use as you can see in following video, when you press the button key, the load that connected to that pin turn ON and by other press it be turn OFF. Note: you have to add IRremote.h file to your Arduino l...

By this circuit you can run 3 to 36v LED or other DC load by touch. the circuit used only one touching plate, its better to use small size plate such as 1cm x 1cm aluminum foil. 1 kilo ohm resistor must used when the power supply is more than 15 or 18v, for limiting the voltage of IC4011. Touching time for turning ON or OFF must be lower than 1 second. You can make this circuit for AC load. Parts list: IC4011 NPN power transistor Transistor S9013 Diode 1N4148 Resistor 100K(2pcs) Resistor 1K Resistor 8.2K  Capacitor 100nF Capacitor 2.2uF 16v Power LED 3 to 36v

LED chasers that using IC4017 always contain a timer ic for making clock pulse, but this circuit used a flashing RGB LED as a pulse source, so this is simplest, smallest and cheapest LED chaser with 10 LEDs. This circuit can run with 9v battery and draw only 20mA.  Parts list: IC4017 LEDs(10pcs) Flashing LED Resistor 470 ohm Resistor 330 ohm Battery 9v

By this circuit you can turn ON-OFF an electric appliance up to 10A by touch.  You can use any other NPN transistor rather than S9013. Its better to use small plate for touching plate such as 1cm x 1cm. Touching time for turning ON or OFF the load must be lower than 1 second. Parts list: IC 4011 Transistor S9013(2pcs) Diode 1N4148 Diode1N4007 Zener diode 12v 1W Bridge diode 1A Relay 12v Capacitor 470nF 400v Capacitor 220uF 35v Capacitor 2.2uF 16v Capacitor 100nF Resistor 100k(2pcs) Resistor 270 ohm 1W Resistor 8.2k Note: Don't touch the circuit when it connected to electric line (exception certain touch plate).