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 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

Make Induction Heater Video link -  https://youtu.be/YlY6zy8DpYo This circuit use full comments value or comments name. Using inductor 10uH to 100uH you can use everyone this range or heating inductor coil 5turn use 16SWG to 22SWG I am use 22SWG you can use any of this range. Using MOSFET Z44 very frist switching  Z44 frequency range 200MHZ to 4GHZ. Another MOSFET IRF540 I am using this circuit Z44 you can use any of this first switching MOSFET. Using Diode 2N4007 this is American diode This frist recover Diode you can use any frist recover Diode like 2N4107. Using resistance 330 ohm resistance use gate biasing 330 ohm to 470 ohm you can also use this range of resistance. Using 10K ohms resistance gate pin discharge or noise filter you can use 10K ohm to 20K ohm. Using capacitor 1.5uF you can use 1.5uF to 20uF range I am using this circuit 1.5uF. IRFZ44  datasheet this is a third generation Power  MOSFET  that provide the b

RF Amplifier using op-Amp