Hello,
I would like to introduce myself first. I am student of Computer engineering at Brno University of Technology.
I am interested in two extremely different parts of electrical engineering and that is vintage vacuum tube electronics and computers.
Since I only own old vacuum tube oscilloscope I have decided to make myself better one.
And this little project was my bachelor's thesis and I would like to share it as open hardware and software with you guys.
It is basic FPGA dev kit with FTDI USB 2.0 interface and 8MBIT SDRAM (intended as sample memory) and DSO module.
Basic specs:FPGA dev board - four layer board, with Spartan 6 LX25, FT2232H, configuration flash, 8MBIT SDRAM and IO headers.
DSO module - two layer board, 125MHz samplig rate (would be usable to 200MHz or more with better oscillator) and 100MHz analog BW, 16bit logic analyzer.
Everyone is welcome to improve my design, firmware or software here on github:
https://github.com/josko7452/qwave-projectI will try to answer any questions about my HW/FW/SW design if anyone would be interested..
FPGA board is fully working and could be used for various purposes apart of using DSO module. DSO module has some quirks (noise), but it is usable as well. I am attaching photo of manufactuered boards and screenshot of measuring 3MHz triangle wave from really crappy signal generator that was available in my university lab...
PS: I know that Dave doesn't like USB DSOs but I silently hope for thumbs up Even thought it couldn't replace real scope, I find it still handy because it is really portable being 10x4x2cm and I always carry my laptop anyway...