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Category: Electronics

Reading an EPROM using an Arduino UNO – Step #1

Posted on 6 January, 2023 by Rickard

Quite a while back I got a few components from a fellow enthusiast, consisting of a few Z80 with the accompanying peripherals,  some TTL-chips, EPROMS and a few RAM-chips, great! More parts for my homebrew Z80! Sadly, the project has been dormant for some time, as I’ve become a father, and we’re in the process…

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Raspberry PI B+ HDD-cage.

Posted on 4 February, 201615 June, 2022 by Rickard

Well, this is the result of my idea that I got while I had problem sleeping. And a quick search later, I was unable to find any box/cage that was ready for a HDD (2.5″). So, I spent some time mocking up two brackets to mount an HDD and a Raspberry. The brackets allow you…

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DIY Speedometer.

Posted on 3 July, 201515 June, 2022 by Rickard

Time for another update, and this time, I thought that I will share with you, my homemade speedometer. Using a photo-diode, a LED, a BC547-transistor, and a few resistors.

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SD-card module.

Posted on 23 May, 201524 November, 2021 by Rickard

A quick and dirty SD-module, running in SPI-mode.

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A small 16 device SPI-bus

Posted on 23 May, 201515 June, 2022 by Rickard

Hi! I’ve have been designing a 8-bit computer from scratch over a year one, most of the time I’ve spent researching and learning about the MCU and microprocessor I’ve chosen to use.

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