Category Archives: Arduino

Virtual rs485 Network

Posted on April 27, 2026 by peter

Jeg har i mange år brugt rs485 til at  kommunikere med mine IoT-enheder, det har efterhånden udviklet sig til at jeg bruger min egen protokol, over hvilken jeg programmerer og kommunikere med mine dimser. Men når jeg skriver og tester … Continue reading →

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Varmepumpe fra Tørretumbler

Posted on April 2, 2026 by peter

Jeg har altid været betaget af de der Populær-Mekanik artikler fra midten af det forrige århundrede, hvor man repurposed et eller andet f.ex: Drill Press from a Ford Model A Differential (1953) Byg din plæneklipper om til et Farve-TV Så … Continue reading →

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STM32 and Linux

Posted on January 7, 2026 by peter

The STM32F103c8t6 based blue-pill is a bargain, but the learning-curve is steeper compared to Arduino, so here is what I did Install HID-bootloader The boards from china comes with a serial bootloader, so you need either a USB-serial-port, or an … Continue reading →

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Install Klipper on your old 3D-Printer and still keep Marlin

Posted on February 11, 2024 by peter

This is the final post in a series of 3 blog posts describing how I make Marlin and Klipper coexist on my 3-Printers: Dual Applications on ATmega2560 – Marlin AND Klipper – FAIL (well almost) AVR DualBoot Bootloader Install Klipper … Continue reading →

Posted in 3D printer, Arduino, Embedded | 2 Comments

AVR DualBoot Bootloader

Posted on February 2, 2024 by peter

This is part 2 in a series of 3 blog-posts describing how I make Marlin and Klipper coexist on my 3-Printers: Dual Applications on ATmega2560 – Marlin AND Klipper – FAIL (well almost) AVR DualBoot Bootloader Install Klipper on your … Continue reading →

Posted in 3D printer, Arduino, Embedded | 2 Comments

Dual Applications on ATmega2560 – Marlin AND Klipper – FAIL (well almost)

Posted on January 10, 2024 by peter

How to be able to boot into a backup firmware instantly. This is part 1 in a series of 3 blog-posts describing how I make Marlin and Klipper coexist on my 3-Printers: Dual Applications on ATmega2560 – Marlin AND Klipper … Continue reading →

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I²C or SMBus sniffer using Arduino

Posted on April 11, 2022 by peter

I had a need to continuously monitor a I²C bus, so I looked around for an Arduino solution, but didn’t find anything that suited my needs, so I wrote one myself.  None of the I²C-sniffers I was able to find … Continue reading →

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Server Power supply DPS-750TB

Posted on July 7, 2020 by peter

and how to get PMBus access from f.ex. a Raspberry Pi My favorite power-supply for almost anything is the Server PSU for Dell R510/R710/R910. It is a 750w 12v 60amp supply with 80-plus-gold standard,  you can get them for $10-20 … Continue reading →

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Server Power supply DPS-1200FB

Posted on July 6, 2020 by peter

Among hackers the DPS-1200FB seem to be the most popular choice for a powerfull Server PowerSupply 12volt 100Amp for less than $20 delivered. There is a lot of information available for this PSU.  So if you want to really get … Continue reading →

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PlatformIO and Marlin – and how to have separate config files, for different 3Dprinter while sharing the same code.

Posted on April 27, 2020 by peter

I am using Marlin 2.0 to control my 3D printers, Marlin 2.0 can still be compiled and installed from the Arduino-IDE,although I use the supplied Makefile. To take advantage of other processors you have to use PlatformIO. In this article … Continue reading →

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