Ask HN: What cutting-edge technology do you use? • Hacker News Board

Re: Ask HN: What cutting-edge technology do you use?

#11

Post by rgrmrts » Sat, Dec 25, 2021, 2:20 PM UTC

rhn_mk1 wrote: post #9

Fully controllable pocket computers. Surprisingly, the tech has been there since the '90s, but never really caught up. Then it went into a weird walled garden direction with mobile phones that often work against you. Pocket computers are still sometimes janky, like Linux phones are, but having access to all the software and permissions is an unparalleled power.

Which one are you using?

Re: Ask HN: What cutting-edge technology do you use?

#12

Post by reacharavindh » Sat, Dec 25, 2021, 2:28 PM UTC

Not ones I use, but would like to use…..

1. Solid state Lithium battery - safer, and denser power than the li-ion batteries of today. https://youtu.be/Jlt8_z86F-o

2. Well, for the goodness of planet earth - Nuclear Fusion reactor to generate power.

Re: Ask HN: What cutting-edge technology do you use?

#13

Post by pizza » Sat, Dec 25, 2021, 2:48 PM UTC

Software-defined radios - you can do absolutely insane things with these. Listen to multiple radio stations as once, listen to ham radio, capture live images of the earth from geostationary satellites, watch live airplane traffic, listen to maritime radio, ...try to listen to signals using the moon as a reflector.., detect GPS jammers..., sync 5 of them to the same clock source and use them as a passive radar array to track objects' movements through walls..... use them for backyard radio astronomy to detect the ion trails due to the hydrogen emission line of blazing meteorites.... this shit is cheap too the most common basic model is like only 20 bucks.

Haskell

Jax / Awkward Array

Topological Data Analysis

Cocalc

CLIP

gitpod / vscodeweb / github codespaces

CodeQL

DDSP

mathlib

neovim

language-server-protocol

adafruit feather m0

rr

linear logic

tmux

Re: Ask HN: What cutting-edge technology do you use?

#14

Post by Lunrtick » Sat, Dec 25, 2021, 4:21 PM UTC

manx wrote: post #6

Scala 3

May I ask what context you use it in? It looks like it strikes the right balance between simplicity and descriptive power - kinda like a statically typed python.

The web side of it seems rather different from a Flask or FastAPI setup, and it obviously doesn't have SQLAlchemy (which I really like). Do you have any recommendations on that front?

Re: Ask HN: What cutting-edge technology do you use?

#15

Post by pandemicsyn » Sat, Dec 25, 2021, 4:32 PM UTC

taffronaut wrote: post #4

D2 steel

CPM Magnacut ftw.

(as an aside the storry of how Magnacut came to be is pretty cool - https://knifesteelnerds.com/2021/03/25/cpm-magnacut/)

Re: Ask HN: What cutting-edge technology do you use?

#16

Post by vkkhare » Sat, Dec 25, 2021, 5:27 PM UTC

Edge computing for machine learning. Instead of running ML models on the cloud, I train them on user's device, ask these devices to offload computation between each other and give me the best performance out there. One good example is recommendations that work offline for you. Imagine you are listening to spotify in offline mode (with you downloaded playlist) and recommendations adapt accordingly even without internet!

I built out the library for these myself, checkout https://github.com/NimbleEdge/RecoEdge

Re: Ask HN: What cutting-edge technology do you use?

#17

Post by relbeek2 » Sat, Dec 25, 2021, 5:49 PM UTC

pizza wrote: post #13

Software-defined radios - you can do absolutely insane things with these. Listen to multiple radio stations as once, listen to ham radio, capture live images of the earth from geostationary satellites, watch live airplane traffic, listen to maritime radio, ...try to listen to signals using the moon as a reflector.., detect GPS jammers..., sync 5 of them to the same clock source and use them as a passive radar array t…

I’ve been looking to get into SDRs. Do you have any recommendations on what to buy?

Re: Ask HN: What cutting-edge technology do you use?

#18

Post by pizza » Sat, Dec 25, 2021, 6:00 PM UTC

relbeek2 wrote: post #17

pizza wrote: post #13

Software-defined radios - you can do absolutely insane things with these. Listen to multiple radio stations as once, listen to ham radio, capture live images of the earth from geostationary satellites, watch live airplane traffic, listen to maritime radio, ...try to listen to signals using the moon as a reflector.., detect GPS jammers..., sync 5 of them to the same clock source and use them as a passive radar array t…

I’ve been looking to get into SDRs. Do you have any recommendations on what to buy?

I only have an rtl-sdr, it can only receive but is good enough for what I need. Also heard good things about hackRF (can tx as well as rx).

rtl-sdr.com has a buying guide: https://www.rtl-sdr.com/

Re: Ask HN: What cutting-edge technology do you use?

#19

Post by mvh » Sat, Dec 25, 2021, 6:03 PM UTC

I use program synthesis - cutting edge technology from, I think, the 70s?

Re: Ask HN: What cutting-edge technology do you use?

#20

Post by mikewarot » Sat, Dec 25, 2021, 6:11 PM UTC

relbeek2 wrote: post #17

pizza wrote: post #13

Software-defined radios - you can do absolutely insane things with these. Listen to multiple radio stations as once, listen to ham radio, capture live images of the earth from geostationary satellites, watch live airplane traffic, listen to maritime radio, ...try to listen to signals using the moon as a reflector.., detect GPS jammers..., sync 5 of them to the same clock source and use them as a passive radar array t…

I’ve been looking to get into SDRs. Do you have any recommendations on what to buy?

The cheap RTL2832 software dongles do a surprisingly good job, and can be had with antennas for $30-40. There are many different packages which can drive them, including SDRsharp and HDSDR.

--

GNU Radio lets you build flowcharts, and compiles them (via python) into real-time data flows. I've built all sorts of things in it, including one that tells me the direction to a VOR aircraft navigation beacon near me.

It also does audio frequencies, so can work with your speaker and microphone.

It's not the slickest package around, but it gets the job done, and it's open source.