Mike Walters

Electronics, RF, reverse engineering. Engineer at @GSGlabs & author of inspectrum. he/him. @[email protected]

[Mike Walters @assortedhackery]

btw i'm miek at mastodon dot social if you want to follow me there

[Mike Walters @assortedhackery]

@tedyapo https://t.co/j9FxquVLPL

[Mike Walters @assortedhackery]

@tedyapo UHF RFID! It probably speaks EPC Gen2

[Mike Walters @assortedhackery]

@gsuberland maybe you could use an RF power detector IC after AC-coupling, something like the AD8318 used on this board? https://t.co/Z6HINuJHro

[Mike Walters @assortedhackery]

@DanielBogdanoff @smellsofbikes @Keysight looks like it uses another port from the PNA-X, through a few splitters, to feed a trigger signal to the sampling scopes

[Mike Walters @assortedhackery]

@tedyapo it's a regular scam i've seen on there a lot. they'll compromise an account with good feedback, spam it with listings for expensive stuff, and try to get people to pay off-site

[Mike Walters @assortedhackery]

@Vu3Vwb yep :)

[Mike Walters @assortedhackery]

hmm, i think there's something wrong with this etch a sketch

[Mike Walters @assortedhackery]

@f4grx @lukeweston Yep, this one's a C-L-C T-match and I'm adjusting the caps

[Great Scott Gadgets @GSGlabs]

Happy release day! HackRF 2022.09.1 is now available: https://t.co/SQyYGgcRNd

[Mike Walters @assortedhackery]

@lukeweston oh no. if that pin is extended as far as it looks, i wouldn't plug it into anything

[Mike Walters @assortedhackery]

@mightyohm in the group photo, the green one looks like a perfect match https://t.co/QhKieGADbo

[Mike Walters @assortedhackery]

@mightyohm this one looks really close: https://t.co/F71lWdgCZv - same ribs on top, same handle, and same valve

[Mike Walters @assortedhackery]

@ExplodingLemur might need to press down to get the next page and set whether to trigger on reads, writes, or both

[Mike Walters @assortedhackery]

@GregDavill @timonsku @pepijndevos 😱

[Mike Walters @assortedhackery]

@Straithe https://t.co/OZkGerlOyl

[Mike Walters @assortedhackery]

This weekend I added support for the Agilent 86100A sampling scope to glscopeclient/scopehal, along with support for GPIB adapters using the linux-gpib library. Here it is showing a 10Gbps eye diagram 🤩

[Mike Walters @assortedhackery]

@Jenny_Alto hooklift?

[Mike Walters @assortedhackery]

and it's all good again! 🎉

[Mike Walters @assortedhackery]

Tracking down an issue where my sampling scope wouldn't trigger on one of the inputs. VNA trace suggests there's a hairline break somewhere, since there's a lot of loss at low frequencies but S21 increases with frequency (due to capacitive coupling):

[Mike Walters @assortedhackery]

I tested across the switch that selects between inputs and there's definitely a fault in it, but it's got a spare input! So I swapped the cable over and modified the control cable to swap the signals