fpga4fun.com shows how to make a single channel 100MHz/100MSPS (100 mega-samples-per-second) RS-232 based (and USB) digital oscilloscope (an oscilloscope allows you to view signal voltages) – Link.
Related:
- Oscilloscope art – Link.
- Oscilloscope clock – Link.
- PIC Based Oscilloscope with LCD – Link.
- ScopeOnPC – Turn your PC into a an oscilloscope – Link.
- Using an Oscilloscope – Link.
- Open source USB lab instruments (almost) – Link.
From the pages of MAKE:
Gaming on the EDSAC and PDP-1 – Retrocomputing. MAKE 08 – Page 178. From the earliest computers came the first computer games. Subscribers–read this article now in your digital edition or get MAKE 08 @ the Maker store!
6 thoughts on “HOW TO – Make a digital oscilloscope”
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This is awesome, but there are no details on what is programmed to the FPGA or how it is done (over rs232 I would assume?).
It looks like it may come preprogrammed for this application as a demo? I looked at the website for the supplier and it seemed that way. Basically, you buy the parts, solder it together, and you are all set.
I didn’t look closely enough to find details of reprogramming. I’ve never done anything with FPGAs.
ah I found what appears to be the code under advanced projects.
I checked on his forum and it looks like it is programmable with rs232. Or for a few more dollars JTAG would also work.
I was pricing the parts out and they are fairly reasonable, about $10 for the cheapest FPGA or $15 for the higher end one. The ADC is only $9, although once you start going to up past 150MSPS they get pricey.
btw the two sites are run by the same guy, it is obvious (he states it in the contact section). but he seems like a nice guy, and is very helpful, so thats cool with me.