ard_newbie:
An Arduino DUE can sample 1 Msps in freerun mode (from Sam3x datasheet page 1318):43.2 Embedded Characteristics
12-bit Resolution
1 MHz Conversion Rate
….
oh thank you for the information
MarkT:
There's no point sampling at such high speeds on an Uno or even a Mega, as they don't have anything
like enough RAM to store the samples in, or enough processing power to process them in real time.You are looking for something more like a real DSP perhaps?
What are you looking to do?
i would like to real-time process a signal from ultrasonic transducer, and the frequency of the signal is around 500 KHz, i have searched some good oscilloscope, but with the oscilloscope, the problem is the signal can't be processed in a real-time condition.