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Once you have removed all the goo and glue and cleaned up the battery compartment you can prepare the replacement battery pack for insertion into the chassis.

The new battery pack comes with plastic foil attached to both sides, top and bottom. This is needed so you can handle it without breaking the cell connections. Once you peel the foil away, it becomes flexible and flimsy which isn't really helping with aligning the connector and screw holes.

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Once you managed to get enough solvent under all the cells to pry them up and out of the chassis, you can start working your way from the chassis center towards the front edge. The whole pack is somewhat clamped in under some screw mounting domes which hold the bottom case in place.

Once you have the pack out, you need to mechanically stabilise it, its six cells are only connected by the wires. Only center cells have a plastic frame keeping them together.

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Applying the toluene in between and subsequently under the battery packs takes some time. You basically apply the solvent to one side of each cell, while keeping the computer tilted so it will flow under the cells and reach the glue strips which hold the batteries in place. About 0.5mℓ per cell is enough.

Once done from one side, you spin the MacBook Pro around, rinse and repeat from the other side. This process takes some time, because the glue needs some soaking to losen.

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You may have heard, or experienced for yourselves that Macs aren't the most easy to repair.

Here's how you replace the battery in a MacBook Pro 15", basically any model with a retina display.

Detailed explanations are in the image descriptions.

Basically you open the MacBook Pro with a Pentalobe. Wearing Eye and respiratory protection, and for good measure, nitrile gloves always look fancy, you apply solvent under the battery cells with a needly and syringe.

Wanted to advance my `ansible` setup and add another host. Now I'm kinda lost debugging this SSH issue which *only* happens when `ansible` connects. Basically it drops the MasterConnection after a few seconds for no apparent reason.

Connecting over `ssh` to that host, with these exact settings from my ~/.ssh/config works perfectly fine.

Whoever built this Potemkin-Karaoke-Both in world…
Thanks, you made my day!

I'm really missing hosting

More shots of the heatpipes, and cleaned up PCB and components. Further details of the parts are in the image descriptions.

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Finally I was able to take the time and do some *really* necessary maintenance to my MacBook Pro.
Thoroughly cleaned inside and replaced all the almost a decade old thermal compound.
No luck with the spare fan I had in mind, as that one had already been replaced. Need to order a new one.
Otherwise surgery concluded successfully.

So I have this USB Footswitch, called “FS1-P” made from finest Chinesium. It's mechanically sturdy, and the switch is clicky.

HID is recognised as:
Product ID: 0x2019
Vendor ID: 0x5131
Version: 0.00
Serial Number: SW
Manufacturer: GZIOT

Looks like many others, but seems to use a different chip: CHG551

The configuration software is Windows only, and more importantly: Chinese only, which my computer cannot even display. It's needed to configure the switch.

Any hints how to configure this?

Dear Mac mini Server!

You delivered emails, Jabber, websites, static and dynamic alike, cared for databases, calendars and contacts, kept a user directory, authenticated them on the WiFi in your RADIUS, served files and updates, resolved hostnames, collected backups, compiled source code, maintained packages and many more things.

Today, I release you from your server duties, you've been conducting 24/7 since early 2009.
Henceforth you'll watch over my dashboards.

Thank you!

corresponds to which actual hardware.

Turns out, mapping the SATA controller of which your hypervisor is booted from, into a VM has catastrophic consequences for the Hypervisor. Not unexpected, just inconvenient if trial and error is the only way I know of to enumerate which PCI device does what. :-)

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And in case you were already wondering what this thing is…

It‘s a small, cordless screwdriver by Bosch, titled IXO VI.

Accepts standard 6.35mm (¼ inch) hex bits. Variable speed depending on how deep you pull the trigger.
Banana for scale.

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I‘ve also ordered the optional charging cradle so you can just lay it down to recharge when the battery is exhausted.

The Micro-USB-B plug has a satisfying deep sounding click to it and firmly keeps the charging lead attached.

The battery indicator shows you how much battery is left for action. The LEDs are visible quite well without being blindingly bright in a softer lit room.

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Ever wondered what the difference between cat.6 and cat.6a gear like a wall jack or patchpanel *actually* is?

Surprisingly little, but essential. Cat.6 networks with the common RJ45 ethernet plugs are specified for up to 1Gbit/s.
Whereas cat.6a goes up to 10 Gbit/s.

Here‘s a simple double patch box for each of the specs. They look almost identical at first glance.

The cat.6 model is in the left in all pictures and the cat.6a model on the right hand side.

I recently got a whiteboard at my home office. Therefor I needed a thing to hold the markers. I couldn‘t find anything online that would be exactly what I had in mind.

- Tip down placement of pens
- held on by a magnet
- uses the strong magnets from defunct 3.5" harddrives, because I have plenty of those

So I “designed”* my own. It‘s not perfect, but it works.

*) Terribly mashed together in OpenSCAD

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