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                                                                  Zero PCB 1K resistors 2K resistor 817 optocouplers  circuit diagram  here is how to connect any load or appliances with relay here is the link for code https://github.com/vivek-chauhan7/BT-automation here is the link for Android app. https://play.google.com/store/apps/details?id=com.appsvalley.bluetooth.arduinocontroller thank you for watching

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.to/2YE93ey dc gear motor(100rpm) you can use higher rpm            https://amzn.to/2zsI0Km wheels                                                                             https://amzn.to/2zutthk robot body                                                                       https://amzn.to/3fkIXnq battery pack (12v)                                                           https://amzn.to/2MY3Usi LEDs  Here is some information about L298N  motor driver module The  L298  is a Dual Full Bridge driver that can drive up to 2Amps per bridge with supply vo

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                                                              https://amzn.to/304tIdO 1K resistor 2K resistor buck converter for powring up gsm module            https://amzn.to/3gM2zCl some jumper wires                                                  https://amzn.to/2XRJ6rk here is the schematic diagram  code for AT commands ------------------------------------------------------------------------ /*  * er bros  * sim800l test 1   * at commands   * YouTube :- https://www.youtube.com/channel/UCY6KA