From: jkoenig1987 <jon...@gm...> - 2011-01-12 16:51:13
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asoe wrote: > > > Hi > > I am a newbie to Gumstix Tobe and Overo Tide. > I wonder where can I find the specification > such as A/D sampling rate for Tobi hardware. > I understand that Tobi comes with 6 A/D chs > of 10 bits each as per Gumstix.com, but not > finding anywhere about sample rate, etc.. > > We were using the Verdex Pro and GPSstix as a datalogger on a previous project. After some kernel configuration and python/c code, we were able to get the ADC working. As far as sampling rate, with nothing else running on the processor, we were able to sample 1 channel in C at ~3.5kHz. Here's a summary of the sampling rates that we obtained with other channels. 2 channels: Python – 400 Hz, C – 1500 Hz 3 channels: Python – 320 Hz, C – 1040 Hz 4 channels: Python – 250 Hz, C – 750 Hz 8 channels: Python – 120 Hz, C – 400 Hz Note that these values are from the Verdex Pro, whose ADC was on an expansion board with the UCB1400. Since the Overo has the ADC built in (with a faster processor), I'd expect it to be faster. Won't have actual speed test results until we get there on our project though, probably a few weeks from now... Hope that helps, -Jonathon -- View this message in context: http://old.nabble.com/Re%3A-Help-with-Overo-ADC-tp24174607p30654342.html Sent from the Gumstix mailing list archive at Nabble.com. |