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

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

Epilog Challenge 9

This is an entry in the
Epilog Challenge 9

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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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Step 1: Requirements

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

Step 2: Prepare Arduino Uno

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

Step 3: Connections

Arduino pro mini - - - - > Arduino Uno

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

Step 4: Connection of Led

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

Step 5: Upload Program

  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

Step 6: Connect 9v Battery

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

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

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7 Comments

I'd really go with the pro micro rather than pro mini. Then it already has USB and no need to use another arduino to program. Also quite inexpensive.

here I am talking about cheapest arduino..........
I have found arduino pro micro is about 8$
But arduino pro mini is about 6$

I've purchased a few pro micros for $4.32 with free shipping.

you shouldn't power pro mini with 9v it's made for 5v and 3.3v