Archive for 'hardware'


Markus | Monday, January 15th 2018, 18:29

-- A basic general purpose USB enabled display

Figure 1. The USB VFD board

When ordering at Pollin Electronic, there is this unwritten rule of at least throwing in one probably useless item, one that you might never even get to work (or that is broken in the first place). In my last order, this was a Samsung HCS-12SS59T vacuum fluorescent display[1]. I absolutely love this kind of display and they were cheap at only EUR 1.75 a piece. So why not?

In this post, I will showcase the project that this display became.

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Tags: avr hardware

Lattice MachXO2 Based FPGA Development Board

Markus | Updated Monday, November 27th 2017, 18:37

-- Tiny and cheap, but versatile

Figure 1. A rendered 3D-image of the Tiny-XO2 board


The Tiny-XO2 is a small, versatile and cost-effective development platform for Lattice MachXO2 field-programmable gate arrays (FPGAs). It is built around a MachXO2-1200HC FPGA which features 1280 LUTs, 64 kbits of EBR SRAM and one PLL besides various other features[1]. The development board extends the functionality by providing a USB-to-serial converter and a crystal to allow quick and easy prototyping. All I/O pins are available on the .1 inch headers and labelled directly on the board. Figure 2 provides an overview of all the board's functions.

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Tags: fpga hardware

DIY power amplifier

Markus | Thursday, December 10th 2015, 15:55

In one of my older videos, I tested an audio power amplifier circuit by Douglas Self [1] on a breadboard.

After that evaluation showed how great the design really is, I decided to create a real PCB design for it so I can actually use this as one of my daily use amps.

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Tags: audio hardware