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Posted by jpluimers on 2025/09/03
I see so many people not using flux while desoldering.
Flux works like magic: [Wayback/Archive] The Miracle of Flux – YouTube
This trick work like magic too: [Wayback/Archive] Soldering hacks Soldering 9 contacts at once with a soldering iron and how to use Desoldering wire – YouTube
--jeroen
Posted in Development, Hardware Development, Soldering | Leave a Comment »
Posted by jpluimers on 2023/06/13
Nice Dutch thread: [Archive] Dinsdale. – D💉ane Blijf thuis ⭕️ on Twitter: “Morgen een leuk projectje. Ik heb dit goedkope reflow-oventje. Heb uitgevogeld hoe ik de firmware kan flashen. De interface kan ik op Chinees of Engels zetten. Tevens heeft de nieuwe firmware meer mogelijkheden. ” / Twitter
It is similar to [Wayback/Archive] Improving The T-962 Reflow Oven | Hackaday.
Saved at [Wayback/Archive] Thread by @Dinsdal85174312 on Thread Reader App – Thread Reader App:
Posted in Development, Hardware Development, Soldering | Leave a Comment »
Posted by jpluimers on 2022/08/24
Cool: [Wayback/Archive.is] 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“.
Related:
Video below the signature or at [Wayback/Archive.is] Product Showcase: Pi Zero USB Stem – YouTube.
Via [Archive.is] 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
Pictures:
Posted in Development, Hardware Development, Raspberry Pi, Soldering | Leave a Comment »
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] Badge.team (some 22 repositories and counting: [Wayback/Archive] Badge.team: 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.badge.team 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
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. “.
–jeroen
Posted in Development, Hardware Development, LifeHacker, Power User, Soldering | Leave a Comment »
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:
Bringing a Zebra Stripe SE/30 Back to Life, Paul Brierley, The ‘Book Beat, 2009.02.19. The Japanese call it Simasimac, the horizontal striped pattern that indicates your Mac is terminal.
Macintosh SE/30 – IIcx (without NuBus)
- [WayBack] Page 1-> 68030, 68881/882, PDS
- [WayBack] Page 2-> ROM Simm, RAM Adr. Mux.
- [WayBack] Page 3-> GLUE Chip, RAM Simm
- [WayBack] Page 4-> VIA1, VIA2, RTC, ADB
- [WayBack] Page 5-> Video Interface
- [WayBack] Page 6-> SCSI, SWIM
- [WayBack] Page 6a-> SCSI, SWIM Page 2
- [WayBack] Page 7-> RS422, ASC, SONY Snd
- [WayBack] Page 8-> Power Conn.,
The Mac ROM-inator II replaces the stock Macintosh ROM SIMM with a custom flash memory module. Add a bootable ROM disk, make your system 32-bit clean, gain HD20 hard disk support, and more. The Mac ROM-inator II supports the Macintosh SE/30, IIx, IIcx, IIci, IIfx, and IIsi.
The Mac ROM-inator II is fully assembled and ready to use. Just plug it in and go.Mac ROM-inator II Atom, $42
2 MB SIMM pre-programmed with ROM Disk with System 7.1, HDSC Setup, ResEdit, and SCSI Probe. Compatible with Mac SE/30, IIx, IIcx, IIci, IIfx, IIsi. More InfoThe Mac ROM-inator II is great for breathing new life into your old SE/30 or II-series Macintosh. The ROM disk provides fast and convenient boot-ups and a collection of disk utility programs, and customized startup sounds and icons add a touch of fun. The ROM SIMM comes pre-programmed with a BMOW-made custom ROM containing the following changes:
- ROM disk provides a diskless booting option
- HD20 hard disk support built-in
- 32-bit clean – allows use of System 7.6+ and more than 8MB RAM
- Memory test is disabled for faster booting on 16MB+ systems
- Customized startup chime – major 9th arpeggio
- Happy Mac icon is replaced by a color smiling “pirate” Mac
- New startup menu screen displays installed RAM, addressing mode, and ROM disk details
The ROM-inator II is based on Doug Brown’s earlier [WayBack] Mac ROM SIMM design, used with permission.
Macintosh SE/30
The SE/30 is probably the most popular candidate for recapping. Unfortunately, it’s also one of the more difficult to revive as the leaked electrolyte easily damages traces and vias on these boards. Be sure to wash these boards very well and inspect closely for broken or rotten traces.
Capacitor List:
10 – 47µf – 16V – SMT
1 – 220µf – 16V – Axial
1 – 470µf – 16V – Axial
1 – 1µf – 50V – SMT
Click on the photo for a larger view
Desolder can be tricky, especially for surface mount. This helps:
Choosing capacitors:
Soldering: always add some fresh solder on the pads before soldering surface mount (SMD) capacitors.
–jeroen
Posted in 68k, Apple, Classic Macintosh, Development, Hardware Development, History, Macintosh SE/30, Power User, Soldering | Leave a Comment »
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. 😂😂😂… “
–jeroen
Posted in Development, Ethernet, Hardware Development, Network-and-equipment, PoE - Power over Ethernet, Power User, Soldering | Leave a Comment »
Posted by jpluimers on 2021/09/13
Actiegroep @SchipholWatch heeft een heuse woordvoerder: @alfredblokhuize. Ik sprak hem over hun eigen lawaaimeetapp @AppExplane en hun gebrek aan vertrouwen in de overheid. @NHNieuws
[Archive.is] Actiegroep ontwikkelt zelf app die lawaai Schiphol meet: “Geen vertrouwen in overheid” – NH Nieuws
Via:
De normale Android app voor incidenteel meten kun je downloaden via [WayBack] ExPlane – the app to register aviation noise / [WayBack] Explane +150K (@AppExplane) / Twitter.
Waarschijnlijk is er inmiddels een app om het continue te meten [Archive.is] SchipholWatch on Twitter: “Oudere telefoon voor continu meten vliegherrie …” / Twitter:
- … Explane: er komt een nieuwe versie van de app, waarmee ook continu kan worden gemeten. Met de nieuwe versie kunnen omwonenden gedurende zelf te kiezen periodes alle overkomende vliegtuigen registreren en doorgeven aan de centrale database.
…
- Daarvoor is geen aparte sim-kaart nodig, zolang de telefoon maar in het bereik van een bekend wifi-netwerk ligt.
…
- Ook zal de nieuwe versie via Bluetooth kunnen communiceren met een goedkope (en eventueel waterdichte) decibel-meter.
…
- is wel enkele maanden tijd nodig, omdat ook deze weer wordt gebouwd door onze vrijwilliger Roelof Meijer. Hij werkt op vrije dagen aan de app.
En voor Raspberry Pi:
[WayBack] GitHub – SchipholWatch/explane-pi
via
- [WayBack] Continu meten met Explane kwestie van weken | SchipholWatch
- [Archive.is] SchipholWatch on Twitter: “@Fl_TegenGeluid @ORSbewoners @Annette_denkt @LeonAdegeest1 @rivm @eppobruins @suzanne_GL @IenWTweedeKamer Binnenkort hebben we hopelijk tientallen zoniet honderden meetpunten van vlieglawaai. @AppExplane voor de @Raspberry_Pi vordert gestaag! …” / Twitter
Andere initiatieven:
–jeroen
Posted in Arduino, Development, Hardware Development, Raspberry Pi, Software Development, Soldering | Leave a Comment »
The Wiert Corner - irregular stream of stuff 
