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farkanoid

193 karma · joined January 2, 2015

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farkanoid··on High-speed 10Gbps full-mesh network based on USB4 for just $47.98
Laplink! That part ot my brain hasn't activated in decades...

My favourite was bootstrapping using 'COPY /B COM1: C:LL3.EXE' to get the Laplink executable to the target machine over Serial, when you didn't have a spare floppy.

farkanoid··on Features and Benefits of Bluetooth Mesh 1.1 for Wireless Mesh Networking
Wirepas requested a meeting with us at our office several years ago. They were very polite, but in all honesty, we knew even less about implementing their product afterward, and felt as though they weren't really interested in working with /us/ at all.

Most of our questions were about implementing their firmware in our hardware (which largely went unanswered), and most of their questions were focussed companies we have ties with, that they were interested in reaching but have so far been unsuccessful.

I hope they're doing well as it was an interesting product.

farkanoid··on Why does holding a key fob to your head increase its range?
But my remote contains a 12V battery /s
farkanoid··on Ask HN: How many of you are consciously downsizing your devices/going retro?
Reading this made me (very) sorely miss my A1200, which I used as my daily driver all the way up to 2003. I was shocked at how much difference in speed a 4MB Fast RAM expansion and 68881 FPU made.

You might like Photon of Scoopex's Amiga Hardware Programming tutorial[1], in which he creates an Amiga Demo using assembly from scratch in ASMOne/ASMTwo

[1] https://www.youtube.com/watch?v=p83QUZ1-P10&list=PLtjBEWQ66x...

farkanoid··on How bioelectricity could regrow limbs and organs
There's a fascinating (in my opinion) TED talk about this featuring the same Biologist, with examples of regenerative experiments performed using Flatworms: https://www.youtube.com/watch?v=XheAMrS8Q1c
farkanoid··on Ray-Ban Meta Smart Glasses
LEDs can effectively be used as light sensors when wired in reverse - About a decade ago there was a post where someone turned an 8x8 LED matrix into a touch sensor.

Edit: Found the link, here it is: https://mrl.cs.nyu.edu/~jhan/ledtouch/index.html

Analog Devices has an excellent article about using LEDs as sensors in this way: https://wiki.analog.com/university/courses/electronics/elect...

farkanoid··on Illegal lab containing bioengineered mice infected with HIV and herpes in Cali
Haven't seen that name in a while! I have fond memories of both Spinrite and ShieldsUp
farkanoid··on Joins 13 Ways
Great. Now you've made me want to re-watch Stargate!
farkanoid··on Electronics Lab Bench Setup Guide
Hi,

Sorry about the delay, HN doesn't seem to notify me about comment replies.

I wrote a simple PHP script that generates the labels. It just pulls a bunch of data from our parts database and positions the text/graphical elements on a PDF page using fpdf. The Datamatrix/barcode is generated using Zint.

Once the PDF file is generated, the script passes it to /usr/bin/lp for instant printing to a Dymo LabelWriter, or sent with an attachment disposition for downloading and printing locally.

Hope this helps, please let me know if I may be of further assistance

farkanoid··on Electronics Lab Bench Setup Guide
For prototype/repair/rework parts, we use cheap folders with business card or CD/DVD inserts at work - Cheap and effective!

The labels reflect the location of the item in the folder (Folder x Page y) and also the shelf in Storage (Rack-Bay-Shelf-Place), if it's a part we use also in production.

https://i.imgur.com/awt8HMw.jpg

https://i.imgur.com/xVguVGn.jpg

farkanoid··on The Great Electrician Shortage
Ditto here. Working with mains voltages and cabling every day for over 20 years. I know the IEC specs forwards backwards, but I'm 40, married and can't afford to leave my EE day job for a 4 year apprenticeship that pays nothing.

Apparently you can pay ~$12K to an RTO (the 'pay to get qualified' type) and get it done in a year, but you still require a sparkie to sign off, as well as photo/video evidence along with written and practical tests.

I feel like Electrical/HVAC are among the most gate-kept trades in Australia.

farkanoid··on Valve Restricts Accounts of 2500 Users Who Marked a Negative Game Review Useful
I really need to run this on some of the machines at work.
farkanoid··on The Beauty of Pulse Arc Welding
I'M SO SORRY
farkanoid··on The Beauty of Pulse Arc Welding
I'm so infatuated with these machines that I've been working on designing my own version (using parts available at Mouser/Digikey) for close to a decade.

Unfortunately I've been unable to maintain a decent work/life balance due to the high cost of living. As a result, I honestly die a little inside each time I see an article posted about them.

The last update was in 2013, where I completed the EHT "popstart" circuit (to replace the expensive retractable electrode, and allow the use of a standard TIG head): https://www.youtube.com/watch?v=Y4c5Le2kT6w

Some day I'll complete it!

farkanoid··on Circuit.js – Electronic circuit simulator on the web
https://www.ni.com/en-au/shop/electronic-test-instrumentatio...

It looks nice but Jesus... $1550AUD a year for the designer edition?

farkanoid··on Latitude Financial Services Hit by Cyber Attack – Customer Data Stolen
Alternative link: https://www.itnews.com.au/news/latitude-financial-breach-imp...

For reference - Latitude provides interest free payment services to some of the largest retailers in Australia (ie: Harvey Norman, JB HiFi, The Good Guys)

I received an automated call yesterday morning asking me to confirm the last few transactions on my Gem Visa Credit Card (provided by Latitude).

It attempted to transfer me to the fraud prevention team - 15 minutes later it disconnects me advising that there is nobody available to take my call and automatically suspends my card.

All contact numbers including Customer Service, Fraud, Lost/Stolen Cards and Complaints are unreachable.

farkanoid··on E-bandages lightly zap and heal wounds
That TED talk was great! Hoping to watch the other video tonight, thanks for sharing
farkanoid··on Why does the SARS-Cov2 genome end in aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa? (2020)
What a fascinating article! Thanks for sharing.

I didn't realise there was so much crossover between embedded design and biology!

farkanoid··on ESP32 Buyer’s Guide: Different Chips, Firmware, Sensors
I honestly had a hard time getting started with ESP32-C3 (my first ESP device). Admittedly all of it was my fault, I got too cocky and assumed things based on previous work with competing devices that I shouldn't have.

Once up and running they really are quite pleasant to use, and pretty damn cheap.

The issues that hurt me the most were:

1/ It doesn't come preloaded with 'AT' firmware, it took me a while to figure this out as well as a PCB respin.

2/ The clearly labelled TX and RX pins are for flashing and debug output only, not for communication with an an external microcontroller. Two to four GPIO pins (decided by the AT firmware) are used for communication in 'AT' mode

3/ Two GPIO pins need to be asserted high and low on startup to enter flash mode. This fine when you figure it out, however the flash tool still tries to upload the firmware and 'fails successfully' with the correct upload delay.

farkanoid··on Windows 98 icons are great (2015)
I was going to mention how nice the old Black-White-Orange-Blue icons from the 80's Amiga era were, but it turns out I've completely misremembered and they really are quite horrible.
farkanoid··on Windows 98 icons are great (2015)
Pregnant person!
farkanoid··on 8″ Fairlight Floppy Disk Imaging
Ditto, I could almost hear the cracktro chiptunes.
farkanoid··on Streetlights Are Turning Purple
tl;dw Apparently there are 5G radios installed in streetlights and graphene in our vaccines, and the graphene somehow reacts when irradiated with 5G to turn into... worms?
farkanoid··on Single-Board Computer from a TV
I had a brief stint as a technician repairing Foxtel IQ set-top boxes (Pay TV). I was just as surprised to find a UART present on the scart connector too! I guess it's relatively common
farkanoid··on NRF7002 – Low-power, advanced security, seamless coexistence
That's odd, it still works for me? Top left corner of the IC, above the dot indicating pin 1, there's a small enameled copper wire connecting one pin/pad of the IC to a nearby ceramic capacitor
farkanoid··on NRF7002 – Low-power, advanced security, seamless coexistence
I appreciate Nordic leaving that bodge wire[1] in the photo, even though they didn't have to. The article's a little sparse on technical detail though.

[1] https://www.nordicsemi.com/-/media/Images/Products/Wi-Fi/nRF...

farkanoid··on Ddram disk – A PCIe card with 14x RAM slots
Something seems a bit dodgy. The about page shows the top and bottom PCB layouts without any RAM sockets, only dozens of DDR RAM ICs soldered directly to the back of the card.

...Which would be fine, had I not stumbled upon (what seems to be) the original project[1], in Russian no less.

The blog shares the same block diagram, images and DDR PCB layout. There are no DDR RAM slots. Further, the slots are through-hole and not SMD, you wouldn't be able to attach a heatsink directly to the back of the card as shown in the images.

[1] https://habr.com/ru/post/567742/

farkanoid··on Blinkenlights: PC Binary Emulating Visualizer
> Someone describing the same disk using very similar terms and with from a similar location ⁽ʰᶦ ᶠʳᵒᵐ ˢʸᵈⁿᵉʸ ᵇᵗʷ⁾, which I'd be surprised (to say the least) to learn is not you: https://forum.amiga.org/index.php?topic=73527.15#msg838909

Christ, that's embarrassing, you've found me! Seems I'm stuck repeating the same thing every decade without even realizing it! Excellent sleuth work :-)

I'm tempted to try my luck messaging 'jjsmith' on the abime.net forums, and might just pull on the Prime Artifax route... Thanks for your help with this

farkanoid··on Blinkenlights: PC Binary Emulating Visualizer
Love it! It reminds me of a utility on my old Amiga 1000 that allowed you to view the entire contents of RAM as a large scrollable bitmap.

If you ran a game such as Marble Madness, rebooted the machine, then started the viewer program, very frequently you'd find corrupted remnants of the game assets such as sprites and backdrops as you scrolled.

I was young and absolutely amazed by it. Unfortunately I can't remember the name, only that it came on a disk with 'The Alliance Anti-Virus Collection' hand-written on the label. It had many other cool utilities, some which hijacked the "Insert Workbench" screen to play chiptunes and display scrolling text

Bitter-sweet memories.

farkanoid··on What birds listen for in birdsong
What's fascinating is that the warning calls of other bird species seem to be understood by Parrots, too.

I have a Rainbow Lorikeet and a Rose-Breasted Cockatoo that moved in along with the wife after we married - The Lorikeet is extremely animated, and the Cockatoo (a rescue) extremely timid.

The Lorikeet has learnt to mimic the warning calls of local Sulphur-Crested Cockatoos, Noisy Minors, Common Mynahs.

Occasionally, in the dead of night, the Lorikeet would make little satisfaction chirps while he's preening himself. He'd also recall all the sounds he's learnt to date, sometimes including warning calls of other birds - which sends the poor Cockatoo into a frenzy each time.

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