Cheapest Arduino || Smallest Arduino || Arduino Pro Mini || Programming || Arduino Neno

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This project is about how to interface a smallest and cheapest arduino ever.

The smallest and cheapest arduino is arduino pro mini.

It similar to arduino Uno but it is small and cheap as compare to arduino Uno.

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1. Arduino pro mini
2. Arduino Uno
3. Connection wire
4. 9v battery
5. Led

1. Remove Microcontroller from arduino uno
2. Connect connectors to arduino pro mini

Arduino pro mini - - - - > Arduino Uno

1. DTR/GRN - - - - - - - > RESET
2. TX - - - - - - - > TX
3. RX - - - -- - -> RX
4. 5V -- - - - - - > 5V
5. GND ------------> GND

1. Positive terminal of led - - - > 9th pin of arduino pro mini
2. Negative of led - - - > GND of arduino pro mini

1. Connect your arduino Uno to pc
2. Open tool >> port select port where your arduino is connected
3. Open tool >> board >> select arduino pro mini
4. Open tool >> processor >> select as your board. If you don't know your arduino's processor then try each
5. Open file >> example >> basic >>fade
6. Upload this program to arduino

1. Positive terminal of 9v battery - - - - > RAW pin of arduino
2. Negative terminal of battery - - - - > GND pin of arduino

By the way, subscribe to my YouTube channel for more projects like this. I also update my upcoming projects on Instagram.

buy me a coffee! ☕: Donate

All done..............