Dual arduino board

[dongfang]

Hi All,

I'm just interesting in GPS and 16Bit PWM feature that have been implemented in Mega 2560 board. However I do not have that board and I think:

1. it is a bit big for multi-copter
2. it has the same MIPS to those small arduino board(like pro mini).

So, is it possible or necessary that:
1. Using two or more pro mini arduino board, and they connect togeter using SPI or IIC.
2. One arduino board will focus on AHRS calculation, and collecting sensor data including GPS
3. Another board will focus on motor/server control, RC data, and PID calculation.

My code shows one 16MHZ AVR chip can do no more than 400HZ AHRS calculation using Quaternion algorithm. Unless we use MPU-60x0, it would be better we use dual arduino board, to make good use of existing code, and provide more accurate self-control.

And, upgrading the chip to STM32 would be a good choise in future, I think.

[ronco]

Hi dongfang,

you may use a adruino pro micro to have 4 16bit PWMs with the same size as the promini
[edit]it has 2x 11 bit and 2x 16 bit PWM but MWC dont juses more then 11bit[/edit]
(viewtopic.php?f=8&t=1145&start=30#p8862).

the i2c GPS with a second arduino still exists (viewtopic.php?f=8&t=649&start=100#p7510)


regards felix