Hi all,
İ have recently bought Arduino Mega 2560. I think it hasnt got bootloader on it because when i plug it in on my computer it is not detected truely. How can i install bootloader on it? I already have ARduino Uno. Is it possible to flash bootloader using Arduino Uno board?
I have seen the Arduino as ISP on arduino web site. But here programmer and programmed cards are both Uno. I search for Arduino Uno as programmer and Arduino Mega as programmed.
Hi, welcome to the forum.
Using the Uno as ISP can be used to program any other Arduino board with ATmega chip.
You have to connect the MOSI, MISO and other signals to the right pins, or to the ICSP header.
There are two chips on the Mega board, the large ATmega2560 and the smaller atmega usb-serial chip.
Do you have a Arduino Mega with CH340G ? In that case, you only need to install a driver.
If you have an official Arduino Mega, you can try to return it.
Do you have a link to your Arduino Mega, or can you make a photo of it ?
Thank u for your interest.
I have ATmega2560 chip on my Arduino and i dont have CH340G. So from Uno to Mega which connection should i make?
I'm sorry, I'm on my tablet, and copying links doesn't seem to work at the moment.
Google for Arduino as ISP tutorial : arduinoisp tutorial
Google for the pinmapping : arduino 2560 pinmapping
Google for an alternative bootloader, and also an example with the Mega as target : gammon bootloader
If you don't have a CH340G, then you have a small atmega as usb-serial chip ?
yes i have small atmega and usb serial.
on arduino isp tutorial there is a sample connection between two unos but between uno and mega there isnt any information :(. i dont want to use gammon bootloader as it is not orijinal bootloader of arduino
Thank u Peter. I realized that my chip was CH340 and i installed driver so that it is working now 