I did it again!.
This year, I gave a talk on reverse-engineering a commercial coffee machine.
Clarification, the title was supposed to be “Sudo Make Me a Coffee: Adventures in Reverse-Engineering a Commercial Coffee Machine” (Sudo without comma, referring to UNIX command sudo)
Video recording has been posted on Youtube:
Oh what a weekend it has been.
I not only attended the in-person Supercon (after 2 year of remoticon “hiatus”) but also had the pleasure to give a talk.
I submitted my proposal for a talk focused on my experience cracking encrypted software and to my surprise it got accepted.
I got the first slot on the small stage, Saturday, November 5th, 11 AM.
Judging by the audience, approximately 40-50 people decided it was worth showing up, which was beyond my expectations.
Recording is available on YouTube:
Starting July 12th 2021, the PSU converter boards for SGI Fuel will no longer be available to order via eBay.
eBay has implemented some changes to their selling system that made it increasingly difficult to sell stuff, and despite my attempts to resolve it with their support – was unable to fix anything.
My boards are still in stock, available to order on Tindie:
https://www.tindie.com/products/kubatyszko/sgi-fuel-atx-power-supply-converter-new-version/
I also accept direct orders (it’s very easy to figure out how to contact me). Payment via PayPal or Credit Card via Stripe.
Thanks
Pyramid PS36KX is one of the few power supplies I have for my radios. Recently I decided to consolidate and hook up more radios to a single PSU via powerpoles, it makes everything easier.
One problem with the Pyramid is noise, it’s *extremely* loud, with just a single fan.
Pop goes the chassis, one cheapo 24V fan is the culprit, no speed control, only 2 wires.
Quick throwback to computer days, and here come TWO 12V quiet noctua fans, I used the NF-A8-FLX model which come with lots of options by default, including rubber dampeners.
Both fans are connected in series to make them work under 24V, I cut the yellow (RPM sense) wire, hooked up both fans and installed them.
One went in place of the original 24V fan, and another across the case, near the AMP gauge.
I did have to drill 2 holes in the chassis to attach the new fan, and it doesn’t perfectly overlap with the holes in the top case, but it’s good enough.
Overall cost was pretty low, some labor and cost of two quality fans, but the result is stunning, near absolute silence, makes a lot of difference listening to the radio.
Update 2024. The PSU broke at some point, seems like a common failure – the RED Overload LED was on and the buzzer was beeping.
I ended up replacing the NTE Rectifier with an NTE5556-I version and the PSU is back in business!
Cheers