In this post I will outline a couple of solutions for a quadrature encoder generator in VHDL. I wanted a Quadrature Encoder signal for test purposes without the need to hook-up a real encoder and decided that an FPGA is perfect for this, especially considering that generating two signals with a 90-degree phase shift is [...]

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I recently acquired a Xilinx Spartan-3A development Evaluation Board for a mere US $39.00. Yes believe it. It is reasonably feature rich and comes with a MicroBlaze demo application installed. I have just started work with it and plan to release some projects in the near future. I believe it is excellent for a beginner. [...]

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I recently had a need to brush up on some analogue electronics and discovered, to my surprise, that there are some excellent free tools to help one learn and probably avoid some expensive mistakes before building actual circuits. Most of these tools are based on the famous SPICE simulation engine originally developed at University of [...]

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