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NRF24  RC Transmitter. We also know radio frequency sine web transmitting by NRF24 Transmission range 1.5 KM (Kilometre)  just 250/-useful components  NRF24L01  module with antenna.  Microcontroller Atmel company. At Mega series  Atmega8A  for  Transmitter  ran 16MHz frequncy For receiver circuit  NRF24L01  module without extranal antenna. Using Microcontroller for receiver atmel company atmega series  Atmega 328P  . Programming upload ISP PIN using Arduino nano you can use ISP tool . Programming IDE software Arduino IDE , Visual Studio Code or any other software. NRF24L01  module supply  +3.3 V constant Or microcontroller supply  +5 V constant . Joystick Value 0 to 255 middle value 127 with 0/1 switch. 1 joystick two Potentiometer 10 K ohm  Microcontroller input analog value (0 to 1023) = (0 to 255)                                          Atmega8A pin out :- 1. PC6 (RESET)   2. PD0 (RXD)  3. PD1 (TXD)  4. PD2 (INT0) 5. PD3 (INT1)      6. PD4 (XCK/T0) 7. VCC (+5V)       8. GND (Grou

Blutooth modual control Arduino Connected Device   First step you can open Arduino IDE type everything programming to  under the page first of all we will not everything for this programming now start (int) integer led1, led2 this 2 are variable. Let's discuss about hardware 1) blutooth modual 2) Arduino any.  Arduino to blutooth modual connection Arduino 5Volt connect to blutooth modual VCC, Arduino GND (Ground) to modual GND (Ground), Arduino TX pin connect to Modual RX pin and Arduino RX pin connect to Modual to TX pin. Arduino pin D2 connect LED Anode pin and another pin of LED Chotod connect to Arduino GND pin. Arduino pin D3 connect LED Anode pin and another pin of LED Chotod connect to Arduino GND pin.

 RC Transmitter Receiver This transmission range 1.5KM  just 250/-useful components NRF24L01 module with antenna.  Using microcontroller atmel company At mega series Atmega8A for Transmitter For receiver circuit NRF24L01 module without extranal antenna. Using microcontroller for receiver atmel company atmega series Atmega 328P . Programming upload ISP PIN using Arduino nano you can use ISP tool . Programming IDE software Arduino IDE , Visual Studio Code or any other software. NRF24L01 module supply +3.3 V constant Or microcontroller supply +5 V constant . Joystick Value 0 to 255 middle value 127 with 0/1 switch. Full Circuit or Code Comming soon .

RC Transmitter Receiver This RC transmitter or Receiver device very useful or low cost devices  don't buy flysky transmitter you can use this transmitter. bran of this circuit Atmega 328P you can use also Atmega8A this two microcontroller this microcontroller easy to burn program and upload programing software arduino ide or any AVR compiller . Atmega 328P Pinout NRF24L01   module supply   +3.3 V constant Or microcontroller supply  +5 V constant . Joystick Value 0 to 255 middle value 127 with 0/1 switch. Transmission range 1.5KM  just 250/-useful components  NRF24L01  module with antenna.  Using microcontroller atmel company At mega series  Atmega8A  for  Transmitter For receiver circuit  NRF24L01  module without extranal antenna. Using microcontroller for receiver atmel company atmega series  Atmega 328P   . Programming upload ISP PIN using Arduino nano you can use ISP tool . Programming IDE software Arduino IDE , Visual Studio Code or any other software. More..

Make inverter 5V to 220V just₹120 This inverter can use comments 4.7K ohms resistance, Z44 n-channel MOSFET, 2Amp 12-0-12 transformer, 5Volt DC supply Bulb and bulb holder. Transformer 3Amp T1 12-0-12

Make Inverter 1.5volt to 220volt Hello wellcome to science and technology discovery. This inverter make just  ₹15 .  This inverter operated 220V  9watt  60HZ bulb.  This transformer you can get old mobile phone adaptor.  This type of transformer 6 legs, you can check transformer using Multimeter  Setmultimeter 200 ohm and check frist 2 pin 3.6 ohm to 5.6 ohm, second next 2 pin 1.2 ohm, third next 2 pin 0.8 ohm. This  inverter operated transistor 2N3055 NPN transistor frequency 2.5MHz, DC collector current 15A. Power Dissipation pd 115 watt. DC current gain hFE 20. Using resistance 33 ohm to 1K ohm +-5% you can use.

FM transmitter using crystal   Power supply   :-   Using power supply stable DC voltage 2 V to 3.7 V max. You can only use battery because battery is perfect for this circuit battery output doesn't any noise. Components  :-  Transistor BC 547 , Resistance 100 ohm, 4.7K ohm.   Capacitor 1nF, 47pF,              22pF.   Inductor 1uH. Condenser mic any .       Resistance  :-   Using resistance 100 ohm +-5% changing 1/3 watt, 4.7 K ohm +-5% changing 1/3 watt. Video link -  https://youtu.be/aV7K2NHrHTM 3 Volt Circuit Diagram Capacitor  :-   1uF this capacitor positive pin connect 4.7K ohm resistance one pin and another pin connect 2K ohm resistance one number pin. 5 Volt Circuit Diagram This Circuit Transmitter range 0.3 Kilometre (300 Metre) to 0.5 kilometre (500 Metre) without any obstacle otherwise range 0.2 Kilometre (200 metre) anywhere. It's a spy device. Discuss about listing components Used transistor BC 547 for oscillator and I'm using crystal for noise