Go Down

Topic: ATmega1280 (Read 591 times) previous topic - next topic

miros

Hey guys,
Im not sure abouth one thing. Arduino uno need atmega328 with bootloader. It won't work with normal atmega328. Does ATmega1280 has any bootloader or i can use every ATmega1280. I'm telling because i was thinking about build my own arduino mega :)
Thanks.

westfw

The 1280 needs a bootloader as well.

Bootloaders are not difficult to burn into bare chips.  An ISP programmer ($10-$30) or another Arduino will do it.

kf2qd

Any chip you use will need a bootloader to work with the ArduinoIDE. You can use your Arduino as an ISP (in system programmer) to "Burn" or program the bootloader to your chip. You can buy 328P chips from a number of sources with the bootloader already on them, or you can save a dollar and buy the blank chips. Research Arduino as ISP and you will find info on how to connect things and some instructions on the correct process.

miros

thanks guys,
i want to burn the bootloader with arduino as isp but how to connect it to ATmega1280?

CrossRoads

Connect the same way as any other chip.
Connect crystal & caps, reset pullup resistor to the '1280.
Connect the SCK, MISO, MOSI, +5V, GND and control of the Reset lines between chips.
Program.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Go Up