Knowledge Base

  • Open source FPGA toolchain builds CPU

    Ever wondered if you could run a J1a CPU on an FPGA using only open source hardware? This is possible using these three open source tools: an Open Source Forth kernel, SwapForth running on an Open Source CPU, the J1a built using an entirely Open Source FPGA toolchain, IceStorm When you develop software, you need some…

  • µGFX – embedded library for Displays and Touchscreens

    Here is an interesting GUI toolkit that we’d love to see running on the ZPUino!             µGFX is a library to interface all kinds of different displays and touchscreens to embedded devices. The main goal of the project is it to provide a set of feature rich tools like a…

  • EEVblog #754 – Altium Circuit Maker First Impressions

    Altium’s free version of their PCB software called Circuit Maker is open to the public now. We gave it a spin and liked it, here is a video showing some more details. Dave gives his first impression of Altium’s new FREE PCB design tool for the maker community, Circuit Maker. via www.eevblog.com

  • Gates to FPGAs: TTL Electrical Properties

    Great reference from Bil Herd about TTL Electrical properties. On the path to exploring complex logic, let’s discuss the electrical properties that digital logic signals are comprised of. While there are many types of digital signals, here we are talking about the more common voltage based single-ended signals and not the dual-conductor based differential signals.…

  • You can finally buy a Memristor!

    This is great news! Ever since first hearing about the memristor we have been wondering how long it will be before we see it show up in commercial applications. While 8 memristors for $249 is not very useful it is a very encouraging sign. Just imagine an FPGA made with memristors instead of transistors… For…

  • An Open Source Toolchain For iCE40 FPGAs

    This is a positive first step towards an open source toolchain for FPGA’s. Hopefully we will see something for Xilinx FPGA’s as well. We can always dream that Xilinx will open the format! After months of work, and based on the previous work of [Clifford Wolf] and [Mathias Lasser], [Cotton Seed] has released a fully…

  • Simple Infrared PWM on Arduino

    Nice code walk through of how to generate a PWM in C code. This is a 3 part series showing how to generate IR commands in software. We are often asked on discussion boards, about conflicts between IRremote or IRLib and other Arduino Libraries. In this post, we present a sketch for ‘Simple Infrared PWM…