electronics projects

Hello guys here you can see how interface PIR sensor with and without arduino board. use of this sensor is very easy , by connecting some wires as shown in diagram you can use this sensor. here is circuit diagram :- After connection as per diagram you need to upload this simple code :- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- #define pir 10 #define op 13 int val; void setup() {   pinMode(pir, INPUT);   pinMode(op, OUTPUT); } void loop() {   val = digitalRead(pir);   if(val == HIGH) {     digitalWrite(op, HIGH);   }   else {     digitalWrite(op, LOW);   } } -----------------------------------------------------------------------------------------------------------------------...

Hi This is the simplest home automation using HC-05 Bluetooth module. parts you need...              components                                                                                  buy link Arduino Uno (any arduino works)                                 https://amzn.to/2MUYONt Bluetooth module                                                           https://amzn.to/2AyfN5t Relay module                                ...

Hello guys... To make Bluetooth robot you need         parts                                                                                     buy links Arduino Uno (any arduino works)                                 https://amzn.to/2MUYONt Bluetooth modules                                                        https://amzn.to/2AyfN5t l298N motor driver module                                            https://amzn....

hello guys..!! Today we will reverse engineering of mosquito bat. This mosquito bat can generate 2000v to 4000v so be careful. It can harm you. Do not touch circuit during operation.  here is the  circuit diagram here is how this circuit works:   The joule thief concept is used in this circuit, wherein only a single NPN transistor and a center-tapped transformer execute sustainable oscillation across the two winding of the transformer. This part if circuit converts the low direct voltage to high alternating voltage. There is high frequency transformer is used. Working frequency of transformer is around 1KHz to 200KHz. After that voltage multiplayer circuit is used. In our case it is voltage trippler circuit. So the output will be approx three times the peak input voltage.This is how mosquito bat circuit works.  here is the charging circuit diagram  :- THANK YOU for watching.

HELLO guys SIM800L gsm/gprs module is 2G gsm module. Working voltage range is 3.7v to 4.2v. Use 3.3 logic level. here is the pins of module :- What you need:----                     parts                                                                    buy links   Arduino uno                                                            https://amzn.to/3gPxePi    sim800l gsm/gprs module                                        https://amzn.to/3duMA9U breadboard      ...