. @g7soz.bsky.social as my previous source of interesting cloud knowledge on Twitter, what's causing these interesting rings of dark clouds here? (I'm not the one driving, just for the record)
Dan M0WUT
@m0wut.bsky.social
RF engineer, ham radio operator (M0WUT/W0LID). Interested in PCBs and just about anything you can put on them
![Comic. [Person and person with white hat facing two boxes stacked with $80 price tag and sale tag on each box.] PERSON 1: They want $80 for this? I could make one myself for $10 in parts, an hour of work, a trip to the hardware store, another $30 in parts, another few hours of work, two more trips to the store for $20 more in parts, another hour of work to redo the first hour of work because I messed up, and $80 to buy this when the one I made breaks.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreifdsd32pjwefxji33c5eferlek4o6kkadoosqisb5uatqjmrq4q4q)
I wanted an HDMI switch that I could control from my PC for cheap. This 5 port had a remote on a 3.5mm jack connected to an IR receiver so I thought that would be easy to do a replay attack on. One trip down the rabbit hole of IR remote control protocols and this Arduino can now change the channel!
That'll do for some soldering practice. This is the uSMD board (github.com/arthurbenema...), small caps are 008004 = blooming small. Yes, there's loads of space and generous footprints but still a decent challenge. 0805 resistor at top for scale
Why could I possibly want to redesign an Ali Express DCDC 3 times? I'll be talking at the RSGB Convention on the importance of switch mode power supply PCB layout in a month's time. Would be great to see you if you're around.
PSU dragged into the modern era by adding a (horribly hacky) Arduino Ethernet to RS232 adapter. Now all my older test kit can be accessed by any machine rather than "the special raspberry pi plugged into everything"
