psyon

I've had this MS310 for a long time, and it's taken a lickin and kept on tickin. About a week ago, it started stalling out when I let off the throttle, and to restart it I would have to put the choke on again. I just put on a new air filter, and new spark plug, tried adjusting the carb screws, problem persists. I am leaning towards replacing the carb, but wanted to double check her for other possibilities before I do that.

I am trying to follow some advice I got here about putting a power splitter on the output of an SI5351b, to drive a pair of ADE-6+ mixers. I am having trouble confirming the impedance of the mixer though. The datasheet for the mixer does not mention impedance. Googles AI thing says 200ohms, but I think that is very wrong. I found some forum posts saying it should be 50ohm. I did find a PDF talking about the eval board for it, and it just shows 50ohm connector withing nothing else, so I was going to assume 50ohm, but I have an evail board I bought from Amazon a long while back, and when I measuer it with my NanoVNA, I get a reading of 75ohm. Could be my board isn't the same as the eval

https://gist.github.com/psyon/be3b163dab73905c72b3f091a4e33f4e https://mgasior.web.cern.ch/pap/biw2004_poster.pdf

I have been doing some FFT tests, and currently playing with interpolation. I use the little program above for testing. It generates a pure cosine wave, and then runs FFT on it. It has options for different sample rates, sample length, ADC resolution (bits), frequency, and stuff. I've always been under the assumption, that if I generate a sine wave on the exact fundamental frequency of an FFT bin, that the bins on either side of it would be of equal value. Lookign at the paper I linked to about interpolation, that appears to be what is expected there as well. There is a b

I have an STM32F746G-Discovery board that I have been playing with. I have code that sets ADC3 to read the A0 - A4 pins, which are channel 0, 8, 7, and 6. The data comes back in that order, but based on the phase differences of the samples, it appears it's reading the the data in order based on the channel number (0,6,7,8) and not the order I tell it to (0, 8, 7, 6). I just want to know if I am crazy or not. I couldn't find anything in the documentation about the actual sampling order.