Post date: Feb 21, 2010 10:44:32 PM
Yu
I did research on communication between arduino board with PC using processing. the end result is that processing software is able to load a next file that contains data of the reading motion and sending it one at a time to the arduino board. I found the speed is at 60Hz. I slow it down a bit to 50 Hz. the arduino is able to accurately receive the data.
I am not able to speed up the communication even with a faster baud rate. the delay may lay somewhere else. On the other hand, even with slow transmit rate of 50Hz, we will still able to stream feed the data into the arduino, therefore, able to test our code with collected data.
Michael
Nick
Fiona
-Posted flyers at Johnson Center, Science & Tech 1, and Student Union 1
-Appointments on Human Subject:
Tuesday at 3pm
Thursday at 3:30pm
-Finished layout the PCB with 2 layers, need to double check all the wires and label all the components. Will have 2 additional board attached to the Smart Pen PCB, such as: Accelerometer PCB and Voltage Step Up PCB
-PCB order: http://www.capitalelectro.com/index.htm
-Request sample from Lumex: http://lumex.com/products/detail/flat_solder_terminals3
Discussion at the Meeting
-CFAR peak detection yields a better result than the "sawtooth" pattern. Collect data from x and z axis and find (x2 + z2)1/2
-"Floating Point": determine whether the "division" result yields the correct answers and how long does it take?
-2 ways communication: we are able to send text file from PC to Micro-controller unit (MCU) with frequency of 60Hz and 50Hz.
-PCB: Size 0.6 x 4 inches. Current problem is connecting all the components in the small PCB. The plans are: 1) Remove the AAA battery holder out of the board. 2) Redraw the layout in the paper with 2 different colors (representing top and bottom layers). 3) Get advice from Michael Young and Nathalia if the problem is not solved.
-Determine whether we need another state for transmitting data from MCU to PC