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scanlime047 – Icestudio LED Matrix Driver Part 3
https://invidious.privacyredirect.com/watch?v=Qs1gSzAy4Q4
In the third part of our HUB75-style display driver in Verilog and Icestudio, we start looking at demoscene-style effects to implement next, and implement a gamma correction and dithering module to improve color quality.
scanlime047 – Icestudio LED Matrix Driver Part 3
The Icestudio editor and the entire build toolchain are free and open source software!
The FPGA board and adapter PMOD are part of the iCEBreaker CrowdSupply campaign, which was successfully funded! This is a great little FPGA dev board, and a platform designed to help more people get started with FPGAs using open source tools.
This project is available on Github.
Thank you...
scanlime046 – Icestudio LED Matrix Driver Part 2
https://invidious.privacyredirect.com/watch?v=RKKXaWz9mMQ
In this second part of the HUB75-style display driver in Verilog and Icestudio, we’ll debug and reorganize the existing gateware into something modular that we can build upon, with nice and stable Binary Code Modulation for brightness control.
scanlime046 – Icestudio LED Matrix Driver Part 2
The Icestudio editor and the entire build toolchain are free and open source software!
The FPGA board and adapter PMOD are part of the iCEBreaker CrowdSupply campaign, which was successfully funded! This is a great little FPGA dev board, and a platform designed to help more people get started with FPGAs using open source tools.
This project is...
[Перевод] Making a DIY text laser projector
Let’s find out how to make a simple enough laser projector out of electronics you can find at home.
Пожалуй, самый быстрый релейный компьютер в мире
Спустя два года проектирования и сборки мой проект релейного компьютера ожил и стал способен исполнять прогарммы, написанные на эзотерическом языке программирования brainfuck. Уже сейчас он без сбоев исполняет 25 инструкций в секунду, а в планах добиться стабильной работы на 40Гц.
Компьютер еще не завершен — надо навести марафет внешнему виду — сделать переднюю и заднюю крышки, подвал, добавить органы управления, да уложить красиво многочисленные шлейфы. Но проект можно однозначно назвать успешным.
Sound Blaster 1.0 Principles of Operation
The Sound Blaster 1.0 was not the first PC sound card, but it was the first to support digital sound, two different types of sound synthesis, MIDI, and a joystick all in one card. Let’s lift the hood and examine how the card does its magic.
You can follow along by looking at the schematic here.
Sound Playback
There are three methods a Sound Blaster card uses to play back digital audio.
Direct DAC
The first is called Direct DAC and it means that the PC software has to feed the sound card each sample at just the right time. It works a lot like...
Announcing The Snark Barker, a 100% Compatible SB 1.0 Replica!
In December 1989, Creative Labs launched the now-famous Sound Blaster card. Almost 30 years later, I’d like to announce the Snark Barker, a replica of the original card designed to satisfy all your retrocomputing cravings!
Check out my GitHub repository for all the design files.
The design has been tested and works with a number of old DOS games, and is compatible with the CMS chips (actually Philips SAA1099 devices).
Long range wifi with helical antennas
My experiences with various homebrew antennas and wifi chipsets. Tips and pitfalls. Also a small review of the Orange Pi Zero H2
Christmas special offer
Christmas is almost here and the PacktPub has a great offer for you.
Every ebook, every video for only $5. Go and browse the latest titles and maybe you will find to books you will read the next year.
The ESP8266 book is in the offer. Get it and start some new IoT project in the 2019!
IoT with ESP8266
Free Stuff, October 2018
The Free Stuff recipient for October is the Wave Farm. Wave Farm is a non-profit arts organization driven by experimentation with broadcast media and the airwaves. Wave Farm programs provide access to transmission technologies and support artists and organizations that engage with media as an art form. The Wave Farm Artist Residency Program is located on 29 bucolic acres in New York’s Upper Hudson Valley and supports new transmission art work by visiting artists from around the globe. Wave Farm’s WGXC 90.7-FM is a full-power non-commercial FM radio station committed to radio as a platform for community engagement and artistic...
Изучаем азотные лазеры — часть 2. Лазеры продольного разряда
В прошлой части мы рассмотрели примеры самодельных и заводских конструкций азотных лазеров с поперечным разрядом, и именно эта топология стала наиболее популярной для повторения самодельщиками. И вот какие её достоинства:
Простота. Как сказано выше, во многих случаях вполне применима даже конструкция самодельного простейшего азотного лазера работающего на атмосферном воздухе, даже при вполне серьезной научной работе в лаборатории.
Достаточно серьезная выходная энергия импульса – десятки миллиджоулей у крупных установок.
Очень малая длительность импульса, в ряде случаев составляющая сотни пикосекунд.
Сочетание предыдущих двух факторов позволяет достигнуть огромных импульсных мощностей – десятки-сотни мегаватт.
Но эта топология не лишена некоторых недостатков. Каких именно и к чему привело их устранение?...