PC/USB based hobby oscilloscope - build your own

I thought that my latest project may be of interest to many people buiding robots: 

It's a simple, easy-to-assemble microcontroller based oscilloscope with two input channels. 
It's built around a dsPIC30F2020. Almost the complete oscilloscope os contained in the dsPIC .

- audio 
- infrared sendr/receiver
- ultrasound
- servo signals
- bio signals, medical instruments
- I2C up to 1 MHz
- RS-232
- one-wire
- SPI up to 1 MHz 

Pictures and screenshots of the scope and the PC software:
http://www.dpscope.com/pictures.html

Detailed specs:
http://www.dpscope.com/features.html

Circuit schematic, assembly instructions, user manual, interface description:
http://www.dpscope.com/downloads.html

Here are a few key specs:

• two channels (important if you want to look at signals relative to each other, e.g. clock and data)

• up to 20 MSamples/sec (equivalent time) / 1 MS/sec (single shot)

• analog bandwidth >1.2 MHz

• Input impedance 1 MOhm || 15 pF

• Up to 40 records/sec (very fluent display, like a "big" scope)

• very compact (about the size of a computer mouse)

• low component count, very easy to assemble (only DIP and through-hole parts, no SMD)

• trigger on CH1 or CH2, or auto-trigger

• delayed scan (to look at things long after the trigger)

• pre-trigger (to see what happened before the trigger)

• datalogger mode (roll mode)

• Infinite-Persistence-Mode, FFT-Mode

• PC-link through USB (both for data and power supply)

• accepts standard oscilloscope probes (1:1 und 1:10)

• interface to computer (virtual serial port) fully documented

• PC software for Windows 2000/XP/Vista/7