Welcome to armscope!
Armscope is a simple low cost digital storage oscilloscope based on AT91SAM7S microcontroller.
This document corresponds to armscope version 20090921.
- single channel,
 - 8-bit sampling using internal AT91SAM7S ADC,
 - sampling frequency up to 500 kSps,
 - uses USB as communication interface,
 - USB powered,
 - input voltage range from +/-64 mV to +/-16.5 V (ranges graded in 1:3 series), no offset setting,
 - triggered by slope or immediately per request,
 - capture buffer size from 512 samples to 14336 samples,
 - AC or DC coupling
 - cost: about $20 assuming you can make PCB on your own and have few hours to spare.
 
Tomasz Ostrowski < tomasz dot o dot ostrowski at gmail dot com >