robtillaart:
send data from the DAQ Arduino to my data logging/LCD Arduino via SPI?
depends on the pins used by the data logging and who will be the master - I assume the data logging Arduino should be as she has 2 'devices'
Arduino1 will be doing acquisition and send information to Arduino2 when Arduino2 will be logging onto SD. From this structure, I assume Arduino1 is the master.
My plan is to use the flash on the DAQ Arduino as a buffer
Cannot be done, falsh is unwritable runtime, use RAM
Yes, I was reading about it earlier and you are right, I am going to utilize the RAM.
Can you tell about the sensor used, the frequency and the data size of one sample?
Maybe tell us the goal of the project, there might be other ways too
It is a robotics project. The "sensors" are quadrature encoders of a master/slave setup. I would like to datalog onto an SD card. I do not want the robotic controller wasting cycles data logging, so Id prefer using the RAM to hold and shoot data into another Arduino which will be doing the data logging. Regarding SD logging frequency, I dont mind a couple hundred Hz.
Until I get my DUE this will have to suffice.
Daniel