The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Hardware Development’ Category

I Built a Commodore 64 Laptop That Never Existed (PI + EMULATION) – The Portable 64 Concept Design – YouTube

Posted by jpluimers on 2026/05/06

Cool to see what 3D printing plus a Raspberry Pi emulating a C64 can do [Wayback/Archive] I Built a Commodore 64 Laptop That Never Existed (PI + EMULATION) – The Portable 64 Concept Design – YouTube.

The Portable 64 with an original Commodore 64 joystick

The Portable 64 with an original Commodore 64 joystick

However, published in December 2025 after Commodore had been resurrected from the C= brands, it would have been way cooler if was based on new Commodore 64 Ultimate hardware.

Maybe someone will do such a portable computer based on that hardware, or even better that it becomes available at [Wayback/Archive] Home | Commodore.

--jeroen

Posted in 3D printing, 6502, C64, Commodore, Development, Hardware Development, History, Power User, Retrocomputing | Leave a Comment »

How to adapt a DucoBox Silent system to make it use Open Source hardware and software for keeping CO2 and humidity levels at healthy levels

Posted by jpluimers on 2026/05/05

The hackability of the [Wayback/Archive] DucoBox Silent “smart” home ventilation box with [Wayback/Archive] Flamingo-tech/Open-AIR: Open source system for home ventilation and control via HA based open hardware was shown by [Wayback/Archive] Jilles Groenendijk (@jilles_com) / Twitter with open source products from [Wayback/Archive] Browse products by TheFlamingo on Tindie in this Tweet:

[Wayback/Archive] Jilles Groenendijk on Twitter: “I bought a duco.eu/uk/products/mechanical-ventilation/ventilation-units/eng-ducobox-silent ripped out all its proprietary electronics and replaced it with open source hardware: tindie.com/stores/theflamingo Now I am able to measure temp/humidity/pressure/co2 of all the connected rooms. And switch the ventilation on each individual area.”

The above Tweet contains useful pictures and a video which I have added below the post signature because they so well show the placement of the open source hardware. Same for the pictures from:

The whole setup integrates well with Home Assistant.

–jeroen

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Posted in Development, Hardware Development | Leave a Comment »

Honghong Lu on Twitter: “Alcohol+paste flux = liquid flux It is pretty good, especially when I use to tin the cable with the solder pot.”

Posted by jpluimers on 2026/04/14

Smart: [Wayback/Archive] Honghong Lu on Twitter: “Alcohol+paste flux = liquid flux It is pretty good, especially when I use to tin the cable with the solder pot.”

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Posted in Development, Hardware Development, Soldering | Leave a Comment »

Bowden’s Hobby Circuits has disappeared from the web in 2023

Posted by jpluimers on 2026/03/12

There used to be this great site, but it disappeared in 2023: [Wayback/Archive] Bowden’s Hobby Circuits

To ensure the table of contents stays somewhat indexed, I quote it below in full (all links are to the Wayback Machine; I have not checked them yet).

Found back via:

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Posted in Development, Electronics Development, Hardware Development | Leave a Comment »

Do This Before You Solder Anything – YouTube

Posted by jpluimers on 2026/03/10

Soldering steps and common problems - Adafruit

Soldering steps and common problems – Adafruit

These are nice references when you start to learn soldering:

The right part of the image from Adafruit is an almost 10 year old one that is heavily copied without reference. With reference, it is at¹

Adafruit also has this great link: [Wayback/Archive] Common Soldering Problems | Adafruit Guide To Excellent Soldering | Adafruit Learning System

The video:

  • Clean with isopropyl alcohol
    • Before soldering
    • After soldering

    Do not use (in the USA popular) rubbing alcohol, as that is only 70% (and 30% water) alcohol by volume: use at least 90%

    • Use a dispenser for alcohol to dose tiny bits
    • Use a non-woven tissue (large areas) or swab (small areas) for cleaning

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Posted in Development, Hardware Development, Soldering | Leave a Comment »

The 20g and 50g mystery solder showdown – YouTube

Posted by jpluimers on 2026/02/27

AliExpress aggressive acidic flux solder has remarkably heavy reels:

 
Total Reel Solder % Solder/Total
100 gram 67 gram 33 gram 33 %
51 gram 32 gram 19 gram 37 %
20 gram 10 gram 10 gram 50 %

--jeroen

Posted in DIY, LifeHacker, Power User, Soldering | Leave a Comment »

From Meh to WOW – With 1 “Tiny” Hack! – YouTube – where the comments mention better ways than this convoluted solution

Posted by jpluimers on 2026/02/03

[Wayback/Archive] From Meh to WOW – With 1 “Tiny” Hack! – YouTube shows an interesting but convoluted solution to solve temperature drift on a cheap Tuya WT410-BH-3A-W thermostat (there are similar models, see below) based on the replacement sensor [Wayback/Archive] WSEN-TIDS Temperature Sensor IC & EV-Kits | Sensors | Würth Elektronik Product Catalog.

Luckily the commenters stepped in and suggest better and easier ways.

On the other hand, the solution is nice to know as it allows plugging in a remote thermostat that sits in a better place to read the temperature while the control bits stay in a place where it is easier to manually adjust.

Chapters:

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Posted in ARM Cortex-M, Development, Domotics/Smarthome, ESP32, ESPHome, Hardware, Hardware Development, Hardware Interfacing, Home Assistant, Homey, IoT Internet of Things, Network-and-equipment, Power User, STM32 | Leave a Comment »

vmstan/gravity-sync: 💫 The easy way to synchronize the DNS configuration of two Pi-hole 5.x instances.

Posted by jpluimers on 2026/01/28

Interesting: [Wayback/Archive] vmstan/gravity-sync: 💫 The easy way to synchronize the DNS configuration of two Pi-hole 5.x instances.

Reasoning: [Wayback/Archive] Frequent Questions: Why two Pi-hole? · vmstan/gravity-sync Wiki

Via:

–jeroen

Posted in *nix, *nix-tools, bash, bash, Development, DNS, Hardware Development, Internet, Power User, Raspberry Pi, Scripting, Software Development | Leave a Comment »

dr-mod/blackout-logger

Posted by jpluimers on 2026/01/27

Just in case we get more power outages over in our country too [Wayback/Archive] dr-mod/blackout-logger:

A miniature device that’s keeping track of power outages.

Hardware:

  • Raspberry Pi Pico
  • Precision RTC Module (DS3231)
  • Waveshare eink 3.7

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Posted in Development, Hardware Development, Raspberry Pi, Raspberry Pi Pico | Tagged: | Leave a Comment »

NEW Universal USB Type C Mod to Restore your older devices! – YouTube

Posted by jpluimers on 2026/01/22

Nice videos about  USB-C receptacles replacement that might fit old mini-USB and sometimes micro-USB ones.

Before applying, check out the tables in USB hardware: Compatibilities – Wikipedia and the table I copied from USB hardware: connector dimensions – Wikipedia to ensure there is enough space to fit the USB-C receptacle in:

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Posted in Development, Hardware, Hardware Development, Power User, Soldering, USB, USB, USB-C | Leave a Comment »