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Neo_Chen boosted
Neo_Chen boosted



Neo_Chen boosted

@tinytoydragon @lyskar
1998: IRC? lol anon, why don't you use ICQ instead, it's much better.
2002: IRC? lol anon, just install MSN, stop being such a nerd.
2006: IRC? lol anon, with Skype you can make phone calls for free.
2010: IRC? lol anon, Chat is all you need, everybody is there already.
2014: IRC? lol anon, you should try WhatsApp, you can even send voice messages.
2018: IRC? lol anon, that's prehistoric! you should checkout Discord and Slack, so much better.

Neo_Chen boosted


Neo_Chen boosted

It arrived. Now I'm a proud owner of the #HP 204C signal generator.

The HP 204C is a low distortion 1 MHz sinewave generator, a transistorized version of the original HP 200A audio signal generator. It was released in 1969, in the 30th anniversary of the HP 200A - the first product made by Hewlett-Packard in 1939.

There's some unavoidable scratches and corrosion on this ancient machine, but it's still in good working conditions.

Using a Wien bridge oscillator, all the harmonic distortion are eliminated to ~70 dB below its oscillation frequency, still superior to almost all cheap, general-purpose signal generators made today (which are not optimized for low distortion anyway), which all suffer from digital artifacts.

The low distortion of the 204C is impossible to detect directly on most oscilloscopes or spectrum analyzers. Measurements of distortion must be made using a distortion analyzer, a specialized equipment for this purpose.

#electronics #retroelectronics

我要來重溫 "Chaos;Head" 這部動漫了

Neo_Chen boosted


(1) 錢包 1
(2) 錢包 2
(3) 德生 PL-310ET 短波收音機
(4) 外接天線
(5) 手機充電器

我剛剛想到一個很 Cursed 的想法:在網咖挖礦

Neo_Chen boosted

did a test shooting + Reform video sketch. this serves as a skeleton for the next shoot when the final device is here, a hand model will have been cast etc. also looking for a voiceover voice, but not sure about the direction of that yet.

成功 DX 到 HCJB (Reach Beyond Australia)
(使用 PL-310ET 本身的天線)

Neo_Chen boosted

imagine people picking names for their git repos the same way they used to pick usernames ten years ago


Neo_Chen boosted
Neo_Chen boosted

the goal is, i want to have a module which can be dynamically enabled and disabled as a janky write protect mechanism
basically once enabled any writes in a certain address range should generate a reset

Neo_Chen boosted

question for hardware folks:

i want to do something extremely fucking cursed and i want to know if it's feasible

so, the zynq-7000 soc series has arm cores with a xilinx fpga, and importantly the arm core contains the ddr controller
however for some reason you connect the ddr controller to the actual ram through the fpga fabric
so i want to know, can i make an fpga module that goes in between and sniffs the dram traffic? like figure out if there are reads or writes generated in certain address ranges?

Neo_Chen boosted
Neo_Chen boosted

voting logistics and good design 


我是不是應該來搞個短波 DX 的 Telegram 群組了(

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