Mike Walters

@assortedhackery

Electronics, RF, reverse engineering. Author of inspectrum. MM0MZW. he/him

Vrijeme pridruživanja: ožujak 2014.

Medijski sadržaj

  1. prije 20 sati

    RT : 's work on porting gr-osmosdr's to Qt and python 3 is now in the gr3.8 branch of Please test and report. If no blockers are found, this branch will become the new master and first tagged release with 3.8 support.

  2. 1. velj

    Smoke test passes, and a quick test with the GreatFET puts it into RX mode successfully 🙂

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  3. 31. sij
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  4. 31. sij

    We won't speak about try #2, but I'm very happy with try #3 aside from maybe a bit too much paste applied? I don't think I was pressing hard enough. I might have trouble with that QFN.

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  5. 31. sij

    First go was surprisingly good, but I think I smudged it a little on release. Should still work fine!

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  6. 31. sij

    All ready for paste application. I've not done this in a _while_ so this might take some tries.

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  7. 31. sij

    Time to do some assembly! First job is to depanel these stencils...

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  8. 30. sij

    and.. there's the problem - some of the traces are completely blown out. Someone put way too much power into this at some point 😟

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  9. 30. sij

    I managed to carefully press the PCB out of its housing. Now we can see what's going on properly! It looks like a Pi-attenuator, with a neat grid structure to allow for trimming resistor values after construction.

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  10. 30. sij

    Some more detail of the PCB

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  11. 30. sij

    The actual attenuator - it looks like a ceramic PCB with printed resistors, plated ends to make contact with the spring-pins, and pressed into this tube to hold it in place.

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  12. 30. sij
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  13. 30. sij
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  14. 27. sij

    Thermocouple interface boards arrived from so I can finally fix up 's T962A reflow oven!

  15. 26. sij
    Odgovor korisniku/ci

    Had to be done..

  16. 25. sij

    Took a punt on this reference attenuator on ebay, to go with some cheap power sensors I got recently, but it seems just a *little bit* out of spec. The seller was nice about it, so it's teardown time once the refund clears!

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  17. 24. sij
    Odgovor korisniku/ci

    I'm lagging behind a bit :)

  18. 21. sij

    yay, PCBs. I worked with on a new revision of his SX1257 PMODs - I'm looking forward to getting these built up and trying them out! Also I had some space on the stencil, so I panelised a couple of other projects - I wonder whether anyone can spot what they are?

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  19. 17. sij
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  20. 17. sij

    I used 's great technique of programming a UART on every pin that transmits the pin name, and started reverse-engineering the pin-out here:

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