Thread 106558222

First thing you'll need to make a computer is the microchip, and that requires silicon. Jerri Ellsworth made her own microprocessor at home using a toaster oven, a tea kettle, toilet bowl rust cleaner and silicon that she bought off eBay to make thousands of her own transistors (called N-MOS transistors) for her Commodore 64 30-in-1 Direct-to-TV joystick remote computer, but that would only be useful for retro computing. You could use BBS because BBS communication is mostly just serial input/output with a terminal program. But don't expect it to be stable since modern BBSs often use telnet over IP rather than analog phone lines. You’d need a network interface, which may require additional hardware. Homemade transistors are not always as reliable as commercial ICs — long BBS sessions may be prone to errors or crashes.

Next major obstacle is - how the fuck do you access internet without commercial infrastructure (ISP, fiber/copper lines or satellite/cellular)? There are experimental alternatives that exist, like black fiber (which is used by the military), using diamonds and lasers as an alternative to fiber optics and acoustic communication, however only the last one would be feasible for a DIY setup in where digital bits (0/1) are converted into sound patterns. OFDM (Orthogonal Frequency Division Multiplexing) is one of the best things that happened to acoustic communication, because it takes a medium that’s usually really bad for data (air or water full of echoes, noise, and interference) and makes it a lot more robust. But still, typical speeds are 100 bps 20 kbps, depending on distance (e.g. 1 km link at 100 bps, or short-range diver comms at several kbps).

>>106558222 (OP)
Then your phone/computer’s speaker emits the modulated sound and another device’s microphone picks it up and demodulates it back into data. This can work in air (short range) or water (longer range, like sonar). The sound channel acts like a very slow modem. The receiving device forwards packets to a gateway that’s connected to the real internet.

Underwater acoustic modems reach ~100 bps ~20 kbps (long distances, noisy). Airborne acoustic networking (ultrasonic Wi-Fi, “chirp networks”): ~1 kbps ~20 kbps, sometimes up to 100 kbps in ideal lab setups. Commercial attempts (like ultrasonic payment systems): Usually in the kbps range.

For context:
Dial-up modem (1990s): 56 kbps

Wi-Fi today: 100 Mbps – 1 Gbps+

So acoustic links are thousands of times slower than radio/fiber.

Early BBS connections were very slow: 300–2400 baud.

Ultrasound acoustic channels can reach a few kbps with good hardware and OFDM, so you can theoretically match or exceed early BBS speeds. You'll need:

>Speaker / transducer capable of emitting ultrasonic tones (20–40 kHz).
>Microphone / transducer capable of receiving those tones.
>A small microcontroller or CPU to encode/decode signals in real time.
>A modem emulator (software that converts digital data into acoustic signals).
>Terminal software for connecting to the BBS over a serial-like interface.

Note that airborne ultrasound attenuates quickly, especially above 20 kHz. Maximum range is usually a few meters in a quiet room. Background noise and reflections can cause bit errors — error-correcting codes are essential. Yes, it’s technically feasible to build an “ultrasonic modem” that connects your CPU or homebrew computer to a BBS. Data rates will likely be in the low kbps range, which is plenty for a text-based BBS. You’ll need careful coding to handle signal processing, error correction, and real-time demodulation.

It’s basically an ultrasonic version of a 1980s acoustic coupler modem.

>>106558222 (OP)
>>>/x/

>>106558226
For batteries, you could use magnesium instead of lithium-ion/lithium-titanate as a renewable alternative. Or MAYBE ionic ones (like electrolyte gel, aqueous or laboratory-grade h2o).

>>106558262
for batteries you can use sodium

>>106558222 (OP)
It's surreal to see this photo and know that is a biological female. The world has changed so much.

>>106558395
If it helps, Jeri is married to another woman (presumably female).

>>106558625
Makes sense, earlier stage of the slippery slope.

>>106558226
But even then, acoustic communication is only for short-range local-only networks.

what do you mean you dont homefab

>>106558222 (OP)
>how the fuck do you access internet without commercial infrastructure
gravitational wave modems

>>106558222 (OP)
>>>/lgbt/

>>106558222 (OP)
>Jerri Ellsworth made her own microprocessor at home using a toaster oven, a tea kettle, toilet bowl rust cleaner and silicon that she bought off eBay to make thousands of her own transistors (called N-MOS transistors) for her Commodore 64 30-in-1 Direct-to-TV joystick remote computer,
did she not have anything better to do?

>>106558222 (OP)
I'm sorry, I don't sleep with women I respect.

>>106558222 (OP)
This is the material i still come to this hellhole for

the seconcd you become even slightly succesful, they'll try to subvert you.
it's a coup-complete problem

Her video on the importance of failure is pretty good.
https://www.youtube.com/watch?v=xhQ7d3BK3KQ
>>106562760
She lives in Portland. It's best to stay inside.

>>106558222 (OP)
>she made her own silicon with just a few household materials and some silicon

wao

>>106565715
That's why you keep it at the garage fab, city-county level where they can't afford to subvert everything.

>2kbps
Let me guess, you need more

>>106558222 (OP)
>>106558226
>chatgpt slop
>mods do nothing
this board is run by incompetent pedophiles: confirmed and witnessed.

>>106558222 (OP)
Are you sure? I think you are confused. I think she only made basic transistors and the C64 chips you're talking about were made in a factory.

>>106558222 (OP)
my sides....