The Saelig Xprotolab is amazingly small (26 x 41 mm) and for only US$49 includes
- a.. Mixed Signal Oscilloscope: Simultenaous sampling of analog and digital signals. b.. Advanced Trigger: Normal / Single / Auto, with rising or falling edge and adjustable trigger level. c.. Meter Mode: DC, Average and Frequency readout. d.. XY Mode (Plot Lissajous patterns or see the phase difference between two waveforms). e.. Spectrum Analyzer with different windowing options and selectable vertical log. f.. Horizontal and Vertical Cursors with automatic waveform measurements. g.. Display options: Persistence, Different grid options, and more. The drawbacks are the 3MS/s sampling rate, 256 samples buffer and 320kHz analog bandwidth, and the tiny 64 x 128 pixel OLED, but it would be still be great for many audio and ELF/SLF radio projects, even a handhed (or wristwatch !) graphical multimeter with arbitary waveform generator, spectrum analyser or as a development board for the AVR XMEGA microcontroller.
David L. Jones - take note !
More info including demo video at....