Electronics Project Making

ARDUINO BLUETOOTH HC05 LED CONTROL This is a program used to interface and control led arduino using an hc05 bluetooth module. BUYING LINKS TO AMAZON BELOW :    PROGRAM :  const int led1 =13; const int led2 =12; void setup() {   Serial.begin(38400);   pinMode(led1,OUTPUT);   pinMode(led2,OUTPUT); } void loop() { if(Serial.available()) {   String value = Serial.readStringUntil("'\n");   if(value =="123")   {     Serial.write("LED ON");     digitalWrite(led1,HIGH);   }   if(value=="456")   {     Serial.write("LED OFF");     digitalWrite(led1,LOW);     }   if(value=="789") {   Serial.write("LED 2 ON");   digitalWrite(led2,HIGH); } if(value=="#") {   Serial.write("LED 2 OFF");   digitalWrite(led2,LOW); } } }  PROJECT LIST :  *   WIRELESS ELECTRICITY PROJECT *  WIRELESS AC POWER DETECTOR PROJECT *  WATER TANK LEVEL...

 ARDUINO RF TRANSMITTER CIRCUIT                This is a simple arduino uno based simple wireless RF transmitter project.The transmitter frequency can be changed by simply changing default frequency values in the arduino program.The range the transmission is a few 100 meters.This is quiet normal for such a low power transmitter.The power output of this transmitter is a few milliwatts may be around 100mw.The power output of the transmitter can be increased using RF power amplifiers.The radio transmission can be heard with a radio.Tune the radio to the frequency same as that of transmitter's frequency.The frequency can be in between 32khz-8Mhz in range.The antenna wire is taken from digital pin 11 of arduino. PROGRAM :  The program for this project is linked below.Check out DOWNLOAD HERE COMPONENTS USED :  Arduino Uno/Arduino Nano ANTENNA SPECIFICATION :  24 swg 1 meter length single core wire  PROJECT LIST :  * ...

 WIRELESS POWER TRANSFER                Wireless power transfer is the electrical energ y  transmission without using wires. The principle used is simple mutual induction and this was discovered by Nickolas Tesla back in years.He discovered that magic happens when some coil of wires is placed near a power source of AC which he was experimenting with the winding coil wires.From this he discovered and strongly belived that AC power source can go wirelessly to greater extend.But his knowledge on experiments is limited as we knows now that air is a not a good conductor of electricity,as even radio signal will fade to an extend. Eventhough,it has a larger application like low power charging stations,wireless phone charger etc..Now a days all are becoming wireless.There were times we use DC current in homes,But the DC power is impratical for a distant wired power transmission.The discover y of AC b y Tesla  and its flexibilit y to co...

       WATER TANK LEVEL DETECTOR   PROJECT CIRCUIT                   This is a simple 2 transistor simple water level detector sensor project and circuit diagram for school and colleges.As it is using onl y a few parts,within 10 minutes we can build such a one.One of the main advantage of such circuit is that we can save water and electricity.Also the circuit works in DC not AC there is no worring of getting shock or malfunctioning from the circuit.Another main advantage is that the power consumption of this circuit is very low sothat it can work for months without any problem.  WORKING                   Here in the circuit we start from the sensor as the sensor which detects the presence of water we use a small 2 pin connector which is attached to the base terminal of transistor T1,which is PNP transistor(BC557).A PNP transistor's output is hi...

               WIRELESS AC POWER  DETECTOR CIRCUIT DIAGRAM    This is a simple wireless ac power detector circuit which detects the presence of ac supply in our home.The project uses cd4060 ic to detect the presence of magnetic field at the pin 11 which consists of a coil of 5 turns.We can take any long wire instead,as no specefic coil is needed just a piece of wire is enough.The sensed signal is amplified at pin 7 of ic and the output is given to bc547 transistor at the final stage to drive the buzzer.A 22 ohms resistor is used to limit the current across the buzzer.An led indicator is placed to same pin to visualise the presence of output.          The principle behind is the presence of mutual induction.For an y  piece of wire,whenever current is flown through the wire will induce a small voltage across the wire.We know that our home wires have high voltage even if its not a coil form,but the vo...

 WIRELESS ELECTRICITY PROJECT USING TRANSISTOR                             Now a days chargers of many mobile phones are becoming wireless.Sometimes we as electronics hobbists and engineers are wondered what is the circuit and principle behind it.Its a simple principle of mutual induction same as how transformer transfers its power to a isolated induction coil.The same thing is happening in tesla coils,which produces a high voltage induction at secondary winding and exite to the surrounding areas Here we use a circuit to exite the coil to transfer the power.The circuit uses a transistor(BC547) to drive the coil,a resistor(15 kilo ohms),9v battery as power source,a switch to on/off the battery and an LED.The gauge of the coil is around 24swg which is wound on a 3 inch diameter pipe or any rounded type of materials.The coil can be of any swg but most preferable one is the 24 swg type as these coils h...