Dear all, I want to implement the ultrasonic pulse echo technique on MDA300 + IRIS platform. So I have to attach an ultrasonic transmitter to the sensorboard's GND and 2.5V excitation pins and another ultrasonic receiver to ADC_1 channel and GND pins. I am using Tinyos 2.1 and MDA300 drivers downloaded from http://tinyos.cvs.sourceforge.net/viewvc/tinyos/tinyos-2.x-contrib/uoit/mda300ca/. Thus, I have a couple of questions: 1.. Has anyone succeeded in getting a sampling frequency 2-3 KHz in free running mode (ie: radio chip switched-off) using MDA300? 2.. How to put high and down the 2.5 v excitation pin? this post http://www.mail-archive.com/tinyos-help@millennium.berkeley.edu/msg24083.html describe it for the 3.3 v excitation pin I appreciate your help in advance, Regards, HAFID
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