My Business Card Runs Linux • Hacker News Board

Re: My Business Card Runs Linux

#341

Post by mattl » Wed, Dec 25, 2019, 3:34 AM UTC

yantrams wrote: post #297

serf wrote: post #282

Earlier quoted context omitted.

Oh, you kids! My XT had an 8088 @ ~4mhz in it, and we pushed it uphill to school both ways, in the snow! It was multi-functional though. The power supply was inefficient enough to heat the room, while simultaneously being heavy enough to bludgeon large creatures for sustenance. Something inside me misses the radiant heat, sitting here on a cold day with my chilly metallic laptop.

I honestly thought you were gonna reference the Four Yorkshiremen sketch by Monty Python after the second line!

Predates Python by a couple years. It’s from “At Last The 1948 Show” from the 60s.

Re: My Business Card Runs Linux

#342

Post by m-ee » Wed, Dec 25, 2019, 3:36 AM UTC

IgorPartola wrote: post #139

I really appreciate this write up. I didn’t know about JCL and their assembly prices seem very reasonable. I also usually order my parts from Newark but their shipping is kind of silly on small orders ($8 for anything under 2lb). Yesterday I started a small electronics project (Bluetooth connected tachometer for my motorcycle), and want to use ESP32 chips for it. I am the kind of masochist who in the past soldered SM…

Take a look at the WiPy, its an ESP32 board setup for micropython

Re: My Business Card Runs Linux

#343

Post by nabla9 » Wed, Dec 25, 2019, 3:36 AM UTC

Filligree wrote: post #313

cubano wrote: post #305

Earlier quoted context omitted.

I just flipped a bank of 16 switches by hand with vacuum tube gates and core memory...punch cards are for sissies!

You had a computer? Back then I wrote C programs on paper, then executed them by hand...

One of the main causes of the fall of the Roman Empire was that, lacking zero, they had no way to indicate successful termination of their C programs.

Re: My Business Card Runs Linux

#344

Post by amelius » Wed, Dec 25, 2019, 4:07 AM UTC

nilsb wrote: post #3

While it's a fascinating project I'd have some security concerns about plugging someone's USB business card into my computer.

Then build an embedded system to plug it into ...

Re: My Business Card Runs Linux

#345

Post by amelius » Wed, Dec 25, 2019, 4:10 AM UTC

caseymarquis wrote: post #231

jaclaz wrote: post #10

Earlier quoted context omitted.

Well, it is appropriate as a business card for an embedded systems engineers, not so much for a system security one! More seriously, I never managed to understand the "obsession" with ROHS (this here is just an example): >I made sure to have a lead-free process—the boards, parts, and solder paste are all RoHS—so that I wouldn't feel bad about giving them to people. I mean, you are creating something that (besides bei…

Industry wide, it's about sanitizing a highly toxic substance from the supply chain. I've met a child whose father worked with lead, and would hug him after coming home. The child ended up with permanent brain damage from ingesting traces of leaded dust on the father's clothing. In this case, it's more likely about keeping lead out of something likely to get crunched up in a parent's wallet and then shown to their ch…

Until what age?

Is it safe for children to solder with leaded tin? (Many people here did so as a child, I suppose)

Re: My Business Card Runs Linux

#346

Post by amelius » Wed, Dec 25, 2019, 4:22 AM UTC

diegoperini wrote: post #76

I really want to learn being able compile and solder an embedded system but I don't know where to start. Assuming I have the parts, tools and materials, how can I learn where to put capacitors/resistors etc in a custom design? What kind of simulators are good at testing these ideas without needing to waste expensive components? What was missing in my Computer Engineering curriculum which paints those circuit parts (e…

Try the book "Practical Electronics for Inventors" by Scherz and Monk.

There's a chapter on microcontrollers.

Re: My Business Card Runs Linux

#347

Post by GhettoMaestro » Wed, Dec 25, 2019, 4:49 AM UTC

JasonFruit wrote: post #85

GhettoMaestro wrote: post #77

Earlier quoted context omitted.

And just like that, you committed a felony.

Probably your second today, to be fair.

Wrong. Second this minute. (420 my man - fuck da US Gov in this respect - they do not have sovereignty over your body or mine)

Re: My Business Card Runs Linux

#348

Post by GhettoMaestro » Wed, Dec 25, 2019, 4:50 AM UTC

kortilla wrote: post #308

GhettoMaestro wrote: post #77

Earlier quoted context omitted.

And just like that, you committed a felony.

Not a felony if it transmits over a cell network that the usb interface was activated.

Sorry, but unless you provide other data I still believe this would run afoul of the computer fraud and abuse act (CFAA - 1986).

Re: My Business Card Runs Linux

#349

Post by tyingq » Wed, Dec 25, 2019, 5:03 AM UTC

jokoon wrote: post #287

neurostimulant wrote: post #67

To me it's truly mind-bogging that a tiny $1.42 chip contains almost everything needed to boot Linux: a 500mhz cpu, 32MB SDRAM, 2D GPU, SD/MMC support, and USB controller, all packaged inside a 10mm x 10mm chip? It makes me really want to get into embedded development.

I wish raspberrypi could release something similar. Their product are still too powerful for my taste.

There are a lot of tiny travel routers that run Linux. Mostly little MIPS boards inside.

Re: My Business Card Runs Linux

#350

Post by amelius » Wed, Dec 25, 2019, 5:21 AM UTC

Idea for a next project: an fpga that runs Linux, on a business card.