Arduino Forum

Using Arduino => Microcontrollers => Topic started by: To_noob_to_be_true on Dec 15, 2012, 01:42 am

Title: Is it possible to connect a mega 2560 to arduino uno?
Post by: To_noob_to_be_true on Dec 15, 2012, 01:42 am
I was wondering if you had an mega 2560 just the chip and connected the vital pins to an arduino uno, would you be able to upload to it? I was wondering this because I notice that the arduino uno and arduino mega 2560 boards are alike.
Title: Re: Is it possible to connect a mega 2560 to arduino uno?
Post by: Osgeld on Dec 15, 2012, 02:03 am
yes
Title: Re: Is it possible to connect a mega 2560 to arduino uno?
Post by: retrolefty on Dec 15, 2012, 02:12 am
Sure, just remove the 328p chip from it's socket on Uno board and add four wires from the uno board to your 'standalone' 2560 based board, pins 0,1, reset, and a ground wire. You are effectively just using the Uno board for it's on-board USB serial converter chip and even the auto-reset should function to support IDE uploading to your standalone board. First you will have to get a bootloader burned into the 2560 chip, but even that is possible if you have a uno board loaded with the arduinoISP sketch and the proper wires to the 2560 'target' chip.

Lefty