@Chris_Rees@Ryan_Cush I got my DSO112A today. It won’t trigger correctly at anything below 10uS timebase (actually thats a documented limitation) making it just short of usefull for ws2811 data line. Theres still some fun to be had with it, but I’ll be keeping my eye out for something else. Might even go a picoscope if anyones got any recomendations.
I’ll still get some use out of it. would love to have a play with the dso203 mentioned above.
I kinda think I want two inputs. Be cool to see 3.3v data going into first led and 5v data coming out of first led and other such stuff.
@Gibbedy_G thanks for sharing your results. Bummer! I just got my DS0112A yesterday and opened the box to look at it but haven’t fired it up yet. I need to measure the data line to help diagnose problems with long jumper cables, but it sounds like this won’t work for that?
What specs do we need to look for in able to effectively visualize WS28xx data signals?
@Ryan_Cush It will work ok for checking if you have a data signal and what voltage it is. In my video above you can see my arduino is putting out 3v. If you want to do stuff like experiment with resistor values i don’t think this will help much.
@Gibbedy_G – it won’t work for experimenting w/ resistor values because it doesn’t show enough resolution of the waveform to tell how clean the signal is? If so, then I’ll need to send it back. What specs do I need to look for in an inexpensive scope in order to do this?
@Ryan_Cush I’m not the person to ask. But after doing some research I think I’m going for one of the cheaper 1000 or 2000 series oscilloscopes from Rigol.
@Gibbedy_G I see what you mean. I hooked the DSO112A directly up to my controller board and this is the best I can get for a waveform. As you said, lowering the timescale below 10us (which I assume would expand the waves) causes it to show nothing. Now, I’m no expert in using oscilloscopes so maybe I have something set incorrectly, but I tried lots of things and this was the best I got.