Duration: 07:30

Sabrent listened to feedback after releasing the first version of this 8-port USB charger.

It doesn't go into a 'sleep' mode displaying the Sabrent logo anymore, and now you can rotate the screen 180° if you use the charger in a different orientation!

Amazon has the Sabrent 252W VOLTIK Charging station on sale: https://amzn.to/4xbjq8L

(As a member of Amazon Affiliates, I earn for qualifying commissions)

Note: Sabrent sent me two of their revised units for testing after I shared my feedback with them. I'm marking this video as 'sponsored' because they sent two units—they did not pay any cash or have any input into the content in this video.

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - Sabrent 252W charger

00:40 - Problems with the old

02:19 - Screen rotation

02:49 - Testing two new ones (supplied by Sabrent)

03:44 - Plug and unplug test

04:47 - Asking for more

06:12 - Sabrent listened

Duration: 05:55

This is the first time I've bought a small network switch and found 10" mini rack ears included!

 - YuanLey PoE+ Switch: https://amzn.to/49Lc6XB

 - Waveshare HomeRack Hollow Wheel Kit: https://amzn.to/3Q5JEZW

 - Waveshare HomeRack 8U: https://amzn.to/4dUzKmY

 - STH Review of the YuanLey: https://www.servethehome.com/yuanley-ys25-0402p-2-5gbe-and-10g-desktop-poe-switch-review/

 - My mini rack website: https://mini-rack.jeffgeerling.com

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Contents:

00:00 - 10 inch ears included

01:34 - Wheels for less than $700

02:53 - A closer look at the switch

05:00 - An older model

Duration: 07:30

I was invited to check out 3D Gloop's HQ, since I live quite close!

A very cool place; there are a bunch of things I didn't show here. I'll leave them for later, when they have the place more finished.

If you want the best 3D print glue (well, at least the best one I've tried...), you can order it from their website: https://www.3dgloop.com

And if you're wondering, the Airtrax Sidewinder uses mecanum wheels, that allow omni-directional movement. Very cool—and fun!

Nothing was paid for this video, I just wanted to share some a cool experience I had visiting a local 3D printing company!

Special thanks to Andrew at 3D Gloop! and ⁨@Repkord⁩ for inviting us, and ⁨@stldenise⁩ for helping with the camera!

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Main Channel: https://www.youtube.com/@JeffGeerling

Contents:

00:00 - Gloop it up

00:24 - AirTrax Sidewinder omnidirectional forklift

01:47 - J.E.Ph.F. the robot

03:58 - J.E.Ph.F. vs Red Shirt Jeff

05:15 - Finally breaking the print

06:57 - Gloop it out

Duration: 11:04

I can finally compare how accurate my clocks are against an atomic reference! At least in one dimension.

The timing rabbit hole goes deep... this is step 2 on about a 10,000 step journey :)

Some of the things I mentioned (some links are affiliate links):

 - NetTimeLogic PPS Analyzer: https://www.nettimelogic.com/tools-pps-analyzer.php

 - Switchberry: https://github.com/Time-Appliances-Project/Switchberry

 - N150 Mini PC: https://amzn.to/4wH8OhV

 - Time Stick: https://github.com/Time-Appliances-Project/TimeStick

 - JetKVM: https://jetkvm.com

 - JetKVM PoE Adapter: https://wisdpi.com/products/jet-poe-splitter

 - JetKVM 3D printed rackmount: https://makerworld.com/en/models/2139891-sg105-sg1005p-jetkvm-left-mounted-10-rack-mount?from=search

 - Calnex Rb/GPS Timing Reference: https://calnexsol.com/datasheet/rb-gps-reference-source/

 - Meinberg microSync XS: https://www.meinberg-usa.com/products/microsync-series.htm

 - GPS Source 4-way splitter: https://www.gpssource.com/collections/splitters/products/s14wi-gps-1x4-wireless-splitter

 - Netgear GS305P 4-port PoE Switch: https://amzn.to/4nCL1LK

 - Tupavco 10" Rack PDU 4 outlet: https://amzn.to/4tMSaum

 - RackMate T2 12U mini rack: https://amzn.to/49hSGcG

 - Various BNC to SMA cables: https://amzn.to/4dSHcil

Huge thanks to NetTimeLogic, Meinberg, and the Time Appliances Project for assistance with this setup! Some of the equipment was provided for my testing, but no money exchanged hands and none of these companies have any input into my videos.

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - Mini atomic time rack

05:22 - Time measurement via PPS

10:12 - Much to do

Duration: 09:15

1 nanosecond wireless sync, 20 picosecond jitter, and wireless black burst!

Check out more about Wi-Wi here: https://www.wiwistamp.com

Huge thanks to Meinberg and Wi-Wi STAMP for letting me talk to them at NAB this year!

(This video was not paid for in any way, I just found this neat demo at NAB and wanted to share!)

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - Wi-Wi, not Wi-Fi

00:25 - Phase synchronization demo

01:53 - The cup game

02:27 - Clocks and timing

04:09 - Oscillators

04:40 - Wireless time and frequency transfer uses

05:48 - Prototype hardware

06:15 - Meinberg demo with an FPGA Engineer

06:58 - Wireless black burst

07:22 - Unlicensed band

07:54 - Wireless time transfer at 1ns

Duration: 42:00

Safety first! Time go fishing.

Things I mentioned in this video (some links are affiliate links):

 - Klein Fish Rod (single): https://amzn.to/4dlcEW7

 - Milwaukee Fish Rods: https://amzn.to/4n7r5k6

 - Klein Tools VDV226-110 Ratcheting RJ45/RJ11 Crimp Tool: https://amzn.to/4diV4lE

 - Dowell Micro Flush Cutters: https://amzn.to/4ekQh4h

 - Monoprice SlimRun Patch Cables: https://amzn.to/4thYzO5

 - NEAT-PATCH Mini 1U cable management unit: https://amzn.to/4n5dhGF

 - TRENDnet 24-port 1U shielded keystone panel: https://amzn.to/4eVldbp

 - TRENDnet shielded Cat6A RJ45 Keystone Jacks: https://amzn.to/4n8B88n

 - TCI Productions: https://www.youtube.com/@tciproductions

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Contents:

00:00 - The plan

03:02 - Hardware store trip 01

06:10 - The point of no return

10:55 - Hardware store trip 02

13:01 - totally safe

14:49 - Time Go Fishing

16:21 - Improvising

20:24 - Join me in the plenum

22:27 - Oopsie

23:52 - Learning from TCI Productions

28:16 - Stuffing and crimping

33:45 - In the USA we use Phillips

36:21 - 10G or bust

37:32 - LABELER

40:52 - Install, accomplished

Duration: 02:48

Pi Connect for Windows on the Forums: https://forums.raspberrypi.com/viewtopic.php?t=397786

And check out my video from 2024 when Raspberry Pi announced Pi Connect: https://www.youtube.com/watch?v=mgbTNZD1Vcw

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Duration: 09:44

A Pi cluster for broadcast audio processing and remote control.

Thanks to Orban for talking to me about this box — the video is NOT sponsored in any way, I just thought the box looks cool, and asked if I could film a conversation about it.

If you want to find out more about the Optimod, check out Orban's website: https://www.orban.com/optimod-5950-hd-overview

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Contents:

00:00 - An unconventional cluster

03:30 - Updates, security, and eMMC longevity

04:55 - CM4 limitations?

06:01 - Why not X86?

07:08 - Modularity and upgrades

08:07 - Repairability (with off-the-shelf components)

Duration: 06:55

FireWire cooked a chip, releasing the magic smoke that made it work :(

A couple things mentioned in this video:

 - Firehat / Equip-1 for FireWire on the Pi: https://equip-1.c-e.group

 - Werewolf USB-C power adapters: https://werewolf.us

 - My first video testing the iSight: https://www.youtube.com/watch?v=s33IT-vLzL4

 - My main video on the Firehat for DV cameras: https://www.youtube.com/watch?v=BuKeW45OL-g

Both the Firehat and the Werewolf devices (which I've covered before) were sent to me for testing; see all my product review and sponsorship policies here: https://github.com/geerlingguy/youtube

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Contents:

00:00 - The Setup

01:24 - I need 12V

03:31 - I need FireWire

03:57 - The most watched part of the video

04:32 - What cooked?

05:44 - What still works?

Duration: 10:57

See my main video on the Firehat for DV Cameras: https://www.youtube.com/watch?v=BuKeW45OL-g

And check out the Firehat / equip-1 here: https://equip-1.c-e.group

And buy my Recompile Linux shirt ;) https://www.redshirtjeff.com/shop/p/recompile-linux-shirt

More details from all my FireWire device testing are in this issue on my Pi PCIe GitHub project: https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/805

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - FireWire devices - HDD on G5

02:02 - My first iSight

04:03 - iSight via iChat

04:44 - iSight on Pi, attempt one

05:40 - FireWire hard drive on Pi, attempt one

07:27 - iSight on Pi, ft Linux recompile

08:49 - FireWire hard drive on Pi, success

10:35 - We're 1 for 2

Duration: 11:24

They fixed the fatal flaw of the Gen2 Smart Outlet.

You can buy the 3rd Generation Smart Outlet here (as an Amazon Affiliate, I earn from qualifying purchases):

https://amzn.to/4879DWq

ThirdReality sent me the four Gen3 Smart Outlets I show in this video for testing. They did not offer any other form of compensation nor have any say in the content of this video. I always mark videos as "sponsored" if any materials were provided in the video, though; see my sponsorship policies here: https://github.com/geerlingguy/youtube

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Contents:

00:00 - The Problem

02:03 - The (potential) Solution

03:10 - Replacing the Gen2 in my rack

04:14 - Adding the Smart Outlet to Home Assistant

06:59 - Attemping an OTA firmware update

08:37 - Did it work?

Duration: 05:00

Knowing how to build your own router for your homelab is going to be a useful skill, until this FCC ruling is reversed:

https://www.fcc.gov/document/fcc-updates-covered-list-include-foreign-made-consumer-routers

Some of the things I mentioned in the video:

 - Raspberry Pi OpenWRT Router Config: https://github.com/geerlingguy/pi-router

 - Radxa Dual 2.5G HAT: https://pipci.jeffgeerling.com/hats/radxa-dual-2.5g-router.html

 - Waveshare Dual Ethernet Board: https://pipci.jeffgeerling.com/boards_cm/waveshare-dual-gb-ethernet-5g-4g-base-board.html

 - Mono Gateway: https://www.jeffgeerling.com/blog/2026/testing-mono-gateway-custom-built-10-gbps-router/

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Duration: 04:32

The MacBook Neo the best value laptop Apple's ever made.

But is it right for me?

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Contents:

00:00 - Low End Mac

00:50 - Hardware

01:45 - Those ports

02:34 - Display and chassis

02:56 - Software and efficiency

03:22 - GPU on par with M1

03:29 - LLMs in 8GB and fast memory access

04:00 - Thermals and Throttling

Duration: 14:45

Kicking off #MARCHintosh in style, emulating the original Macintosh on a microcontroller.

Huge thanks to Micro Center for sponsoring a series of videos exploring Macintosh history this month!

Mentioned in this video (some links are affiliate links):

 - JCM - PicoMicroMac (v3) hardware: https://jcm-1.com/product/picomicromac/

 - Pico Micro Mac (pico-umac) software for Pi Pico: https://github.com/evansm7/pico-mac

 - PicoMicroMac UF2 Creator: https://picomac.bluescsi.com

 - Eyoyo 5" VGA Monitor: https://amzn.to/4cOULz9

 - 1ft VGA cable: https://amzn.to/4bdaaIq

 - Micro USB to USB OTG cable: https://amzn.to/3OGeXt9

 - Action Retro's video: https://www.youtube.com/watch?v=jYOTAGBqoW0

 - MARCHintosh info: https://marchintosh.com

 - nanofix's video on solder wick: https://www.youtube.com/watch?v=IjOh5ShVX_w

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - Pico Micro Mac

01:13 - Some assembly required

02:29 - Firmware and old Mac OS image

03:08 - First boot

04:44 - Exploring old applications and games

10:38 - Exploring the Apple menu

14:11 - Fin!

Duration: 17:33

Lucky for my retro computing hobby, this giant display still handles 640x480 VGA like a champ!

 - Dell UltraSharp 52 U5226KW: https://www.dell.com/en-us/shop/dell-ultrasharp-52-thunderbolt-hub-monitor-u5226kw/apd/210-bthw/monitors-monitor-accessories

 - Mac Server G4/733: https://everymac.com/systems/apple/mac_server_g4/specs/macserver_g4_733_qs.html

Dell sent this monitor to me for testing; I mark the video as 'sponsored' because I did not pay for all the hardware in the video. Dell did not have any say over the content of this video, nor have any chance to review it prior to publication.

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Contents:

00:00 - Quicksilver

03:42 - VGA Shenanigans

06:26 - A more reasonable computer (GB10 via DisplayPort)

08:29 - As big as a walrus (setting it up)

09:25 - Gaming in 6K (on Arm Linux)

11:34 - Two displays, one monitor

12:24 - Three displays, one monitor (adding Thunderbolt)

14:37 - Multi-monitor setups

16:38 - Power consumption

Duration: 12:25

Problems scale linearly, performance does not.

 - Video on Exo on M3 Ultra Mac Studio cluster: https://www.youtube.com/watch?v=x4_RsUxRjKU

 - Video on Dell Pro Max with GB10 Mini PC: https://www.youtube.com/watch?v=FjRKvKC4ntw

 - Video on Framework Desktop Cluster: https://www.youtube.com/watch?v=N5xhOqlvRh4

 - My YouTube repo on GitHub: https://github.com/geerlingguy/youtube

The Mac Studios in this video were provided for testing by Apple, so I'm marking this video as 'sponsored'. As with the last video, they did not pay for this video nor have any input into its contents.

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

Main Channel: https://www.youtube.com/@JeffGeerling

2nd Channel: https://www.youtube.com/@GeerlingEngineering

Duration: 04:37

Time Station Emulator: https://timestation.pages.dev

And the source code is here: https://github.com/kangtastic/timestation

Other things I used in this video (some links are affiliate links):

 - HydraSDR: https://hydrasdr.com

 - Nooelec Ham It Up: https://amzn.to/49NLUfr

 - GQRX: https://www.gqrx.dk

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - Time Station Emulator

01:07 - SDR test setup

02:11 - Let's get phreaky

Duration: 05:59

For some projects, I don't need my bench power supply anymore.

Some of the things I mentioned in this video (some links are affiliate links):

 - Werewolf VFLEX DIY Bundle: https://werewolf.us/collections/werewolf-products/products/vflex-diy-adapter

 - Werewolf VFLEX kit: https://werewolf.us/collections/werewolf-products/products/vflex-3-pack-starter-kit

 - DIY clock kit for practice soldering: https://amzn.to/4bW2gUr

 - Big Clive's clock video: https://www.youtube.com/watch?v=0hwWnPxKU14

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - USB-C PD for all electronics

01:24 - DIY Clock I found through Big Clive

02:39 - Programming the VFLEX

03:58 - Testing the VFLEX

04:49 - Moment of truth

Duration: 16:18

My PreSonus Eris E3.5 speakers starting having issues. First with loud sound, then whenever I turned them on.

The click-click-click WUB WUB WUB was not very pleasant. So I took them apart, and found the problem!

My old speakers (PreSonus Eris E3.5): https://amzn.to/3LVd3DY

My new speakers (PreSonus Eris E5 x2): https://amzn.to/4bUArvL

My audio interface (Behringer UMC202HD): https://amzn.to/3ZzpUie

Tools I used for the repair (note: some things you don't *need*, it just makes things easier)

 - Hakko FR-301 Desoldering Gun: https://amzn.to/45wW6Xb

 - Hakko 633-01 Soldering Iron Holder: https://amzn.to/4pYuEsA

 - ISO-TIP Model 8000 Cordless Soldering Iron: https://amzn.to/45zu7G9

 - Kester 44 Solder wire: https://amzn.to/4t5KUuI

 - Hakko CHP PN-2007 Long-nose Pliers: https://amzn.to/46f0UAx

 - Dowell Micro Flush Cutters: https://amzn.to/3YWH7SD

 - Hakko CHP PN-20-M Micro Pliers: https://amzn.to/4akwDlp

And the capacitor that was needed for the repair: 24V 1000µf (I used a 35V 1000µf). This kit has a suitable replacement: https://amzn.to/4bT0aVs

As an Amazon Associate I earn from qualifying purchases.

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - The speaker on the bench goes wub wub wub

01:00 - Bulging caps

02:07 - Not taking apart, breaking apart

03:40 - Glued and screwed

04:51 - The connectors do not come off

06:21 - Pop a cap (or two)

09:22 - New cap is a bit wide

11:10 - Reassembly

13:00 - Will it explode?

14:04 - Moment of truth (and YouTube Jazz)

Duration: 16:37

I waited far too long to buy one of these portable oscilloscopes.

The FNIRSI 2C53T is $90 on Amazon: https://amzn.to/49BxVJA (Amazon affiliate link)

Here are the other videos I referenced:

 - Branchus Creations' overview of the 2C53T: https://www.youtube.com/watch?v=RyU4aKOZWcY

 - Matthias Wandel's review of the DPOS350P: https://www.youtube.com/watch?v=dcexJ4CTvOg

 - My previous video on the Pico GPS clock: https://www.youtube.com/watch?v=w_EJMtji93g

Support me on Patreon: https://www.patreon.com/geerlingguy

Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Merch: https://www.redshirtjeff.com

2nd Channel: https://www.youtube.com/@GeerlingEngineering

3rd Channel: https://www.youtube.com/@Level2Jeff

Contents:

00:00 - FNIRSI 2C53T

01:45 - Testing timing

03:05 - Probe setup

04:54 - Triggering on nanoseconds

07:22 - Cable length matters

08:45 - Quick summary of the oscope

09:31 - 3D printed clock LCD filter update

10:09 - Testing the signal generator (sine wave)

12:12 - Other waveforms

14:02 - When 1 Hz is actually 2 Hz