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

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Archive for the ‘Soldering’ Category

Make your Pi Zero into an OTG USB stick: Pi Zero USB Stem – KIT-14526 – SparkFun Electronics

Posted by jpluimers on 2022/08/24

Cool: [Wayback/] Pi Zero USB Stem – KIT-14526 – SparkFun Electronics

The Pi Zero USB Stem is a PCB kit that turns a Raspberry Pi Zero into a USB dongle. Once the Stem is installed, your Raspberry Pi can be plugged directly into a computer or USB hub without any additional cables or power supplies. The Raspberry Pi then acts as a USB device using its own Linux kernel gadget drivers to get started.

The Zero Stem is designed to be soldered directly to the USB SMD test pads on the bottom of the Raspberry Pi Zero, needing no wires or pogo pins at all, just solder and a soldering iron! Attaching the stem to your Pi also allows you to create a portable VNC server, or even cluster several Raspberry Pi Zeros with just a USB hub.

The Zero Stem is compatible with the Raspberry Pi Zero v1.3 and the Raspberry Pi Zero W v1.1, but unfortunately it is not compatible with the Raspberry Pi Zero v1.2 or any full-size Raspberry Pi due to their shapes and sizes.

Note: In order for your Pi Zero to function as a USB device with this Stem, you will need to configure it to act as one. You will be able to find these instructions in the Documentations tab under “How to OTG Fast“.


Video below the signature or at [Wayback/] Product Showcase: Pi Zero USB Stem – YouTube.

Via [] Chris Bensen on Twitter: “Oh this is cool!”.

Related: RPIZ USB OTG Raspberry Pi Zero – Hi-Speed OTG-adapter and RPIZ USB ADAPTER Raspberry Pi Zero – Adapter van contact naar USB


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

MCH2022 badge sneak previews from tweeps that attended the Bitlair 20220709 Sweatshop (@MCH2022Camp)

Posted by jpluimers on 2022/07/10

The MCH2022 badge has an ESP32 (with WiFi!), a RP2040 and an FPGA next to a full colour TFT LCD, buttons (including joystick!), LEDs, LiPo battery, USB-C connector, micro SD-card slot and more (see below) and SHA2017 badge compatibility. How cool is that!

There is a wealth on information for this at [Wayback/Archive] (some 22 repositories and counting: [Wayback/Archive] search for repositories containing mch2022).

Good starts are [Wayback/Archive] MCH2022 badge | BADGE.TEAM and [Wayback/Archive] Software Development | BADGE.TEAM (yes of course you can write your own software for it and even distribute it through the [Wayback/Archive] Hatchery).

Below are lots of tweets including some of the Twitter retrospect that organically grew (just like the sweatschop event) on Twitter the day after.

From the original announcement [Wayback/Archive] May Contain Hackers 2022: Presenting: The MCH2022 badge! , this is what hardware is in it

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Posted in Development, ESP32, Hardware Development, Raspberry Pi, RP2040, Soldering | Leave a Comment »


Posted by jpluimers on 2022/05/04

[Wayback/Archive] NPoole/BeanCounter

A Simple, Affordable, Counter for Cut Tape and Partial Reels.

Soon it should become available on [Wayback/Archive] BeanCounter | Crowd Supply

Via [Wayback/Archive] 🌟Cyber City Circuits🌟 on Twitter: “Get hyped. “.


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

“This does not compute”: Mac SE/30 repair

Posted by jpluimers on 2021/09/21

A while ago, This does not compute had a few nice videos on a Mac SE/30 and it’s repair, including the recap process of replacing the electrolytic capacitors (or condensators in some other languages), and cleaning the board (some wash it with hot water and soap, others with isopropyl-alcohol, often called rubbing alcohol).

Note the simasimac can have many causes: bad capacitors in main board are the most common, but it can also be bad memory.

White lithium grease can make the floppy work again (see also [WayBack] Lithium soap – Wikipedia and [WayBack] Grease (lubricant) – Wikipedia).

He also added some links to which I added some quotes and WayBack links:


Desolder can be tricky, especially for surface mount. This helps:

  • Add some fresh 60/40 solder to the joints with a solder gun (as modern solder is lead free, whereas past solder contained lead)
  • Carefully heat up the component and surrounding area with a heat-gun

Choosing capacitors:

Soldering: always add some fresh solder on the pads before soldering surface mount (SMD) capacitors.


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Posted in 68k, Apple, Classic Macintosh, Development, Hardware Development, History, Macintosh SE/30, Power User, Soldering | Leave a Comment »

vidister – ☎️ FTTH sur Twitter : “Shitty idea of the day: Powering a soldering iron via PoE.… “

Posted by jpluimers on 2021/09/15

[WayBack] vidister – ☎️ FTTH on Twitter : “Shitty idea of the day: Powering a soldering iron via PoE.… “:

Via: [WayBack] Amy Renee on Twitter : “Soldering the packets together to enable jumbo frames. 😂😂😂… “


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Posted in Development, Ethernet, Hardware Development, Network-and-equipment, PoE - Power over Ethernet, Power User, Soldering | Leave a Comment »

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