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nippoo commented on Amazon will allow ePub and PDF downloads for DRM-free eBooks   kdpcommunity.com/s/articl... · Posted by u/captn3m0
icqFDR · 2 days ago
I’d advise anyone buying e-books on Amazon to think it through carefully. My account was banned recently because, years ago, I ordered two paper books that Amazon said would be split into two shipments. Both books arrived without any issues, but later Amazon refunded me for one of them, claiming that one package never arrived. This happened 4–5 years ago.

Apparently, during a recent review, they decided this counted as fraud and banned my account. As a result, I can no longer log in and lost access to all my Kindle e-books. They also remotely wiped my Kindle, so my entire library is gone. I appealed the decision, but I’ve been waiting for over six months with no resolution.

nippoo · 2 days ago
They failed to deliver a Pixel phone to me - they never even tried to deliver it and the status said "permanent delivery failure" so I assumed they'd automatically refund me.

Fast forward a few months, I never received a refund and they claim they have no record any more. I could chargeback my credit card but I imagine I'd also be permanently banned from Amazon - so instead I accept they've just stolen $1000 from me with no recourse...

(if anyone from Amazon is reading this, my email is in my bio!)

nippoo commented on Annual Production of 1/72 (22mm) scale plastic soldiers, 1958-2025   plasticsoldierreview.com/... · Posted by u/YeGoblynQueenne
nippoo · 4 days ago
The author (and many others) assume that quality 3D printers are expensive, as a throwaway note in the last sentence.

A plastic soldier set is on the order of $20, and collectors will often purchase dozens.

A Bambu A1 mini (which is sufficient for the level of detail needed for these figurines) is about $200, which breaks even after 10 sets.

nippoo commented on I hate screenshots of text   parkscomputing.com/page/i... · Posted by u/paulmooreparks
nippoo · a month ago
Preview on Mac does automatic OCR. I'm sure other tools exist that are similarly friction-free on other platforms, but it took me under 5 seconds (drag the image from the webpage into my downloads folder, click on it, and then select the relevant snippet and CMD+C to copy it).

I imagine I'd have similar frustrations if I couldn't copy-paste the text easily though!

nippoo commented on Pico-100BASE-TX: Bit-Banged 100 MBit/s Ethernet and UDP Framer for RP2040/RP2350   github.com/steve-m/Pico-1... · Posted by u/_Microft
ssl-3 · a month ago
What other MCU ICs have been demonstrated to use on-die PIO to "not" bit-bang 100BASE-TX Ethernet?
nippoo · a month ago
Notably, the XMOS xcore.ai series of chips have no dedicated hardware peripherals - their 100BASE-TX MAC (as well as UART, SPI, I2C, I2S etc) is entirely software defined. A very different approach to most other microcontrollers: https://github.com/xmos/lib_ethernet
nippoo commented on Compare Single Board Computers   sbc.compare/... · Posted by u/todsacerdoti
sthlmb · 2 months ago
Hey! So I was quite surprised to see my site posted on here so soon after hitting the "go live" button, and thanks for your comment.

I wrote a blog post about why I made the site at https://bret.dk/introducing-sbc-compare/ if anyone's interested, but to TL;DR it, I didn't set out to create a site like this, it was a side quest after creating the automation and database to support my reviews, which do indeed focus on the hobbyist trying to explore Raspberry Pi SBCs and their many alternatives.

I have full specifications and hardware capabilities hidden behind a feature flag at the moment as I'm working my way through adding all of that data (currently at 80 SBCs in the database, and I'm only adding those I own and have run tests on) so there should be something similar to what you're asking for soon. Thanks again!

nippoo · 2 months ago
Thanks for your great work! I would love to be able to search by processor (eg look for all boards with an iMX95, for example) as well as search for things like audio I/O channels, I2C pins, etc. Super useful website!
nippoo commented on Hardware Stockholm Syndrome   programmingsimplicity.sub... · Posted by u/rajiv_abraham
nippoo · 2 months ago
One of the big things this article fails to mention is that TDP/heat budget is way more of a constraint than number of transistors - at small feature size, silicon is (relatively) cheap, power isn't.

There's no way you can use 100% of your CPU - it would instantly overheat. So it suddenly makes even more sense to have optimised hardware units for all sorts of processes (h264 encoding, crypto etc) if you can do a task any more efficiently than basic logic.

nippoo commented on A Technical Update on Submarine Cables [pdf]   swinog.ch/wp-content/uplo... · Posted by u/zdw
01HNNWZ0MV43FF · 3 months ago
That explains why the latency is still decent even after repeated amplification.

I wonder why DC though. Is AC lossy when surrounded by salt water?

nippoo · 3 months ago
There's a couple of factors at play here. One is that AC suffers from capacitive losses over long distances (high power multi-megawatt underground/undersea cables are often HVDC for this and other reasons).

The other more interesting one is that the repeaters in this kind of fibre optic cable are usually powered from both ends, from completely separate electrical grids (so one side sends -5000V and the other sends +5000V, for example). This allows for some level of redundancy as well as thinner insulation. With AC, keeping the phases on both sides aligned would be impractical, as well as the inherent inefficiencies of AC transmission.

Deleted Comment

nippoo commented on Attacking My Landlord's Boiler   blog.videah.net/attacking... · Posted by u/ericvolp12
willvarfar · 8 months ago
I guess your toolbox really shapes your solution space thinking; as I read through this, being completely lost in the whole world of RF whatnot, my mind jumped straight to an alternative attack that better fit my own tooling: could you encase the thermostat in a box that you can mechanically control the temperature of?
nippoo · 8 months ago
Yes! You can indeed do exactly this. Look up CoolBot - they do exactly this, by just heating up the existing thermostat
nippoo commented on How to repair the parts that explode in Lenovo Yoga laptops (2019)   adammunich.com/how-to-rep... · Posted by u/feross
samsartor · 8 months ago
None of the images load for me. The site is https but the srcset attributes all use http. Ironically the src attributes are correct.
nippoo · 8 months ago
To view all the images properly: https://archive.is/5mdgs

u/nippoo

KarmaCake day1413November 25, 2014
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