The Wiert Corner – irregular stream of stuff

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

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Archive for August, 2017

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Running your Mac Mini headless by faking a display for it (HDMI 1080p/4K or Thunderbolt VGA); similar for DVI

Posted by jpluimers on 2017/08/28

CompuLab 4K Display Emulator (fit-Headless 4K)

CompuLab 4K Display Emulator (fit-Headless 4K)

The MacMini is a bit dumb as it won’t enable the GPU when there is no display attached. Which means headless operation is cumbersome as display rendering is very slow.

There are a few tricks of which the off-the-shelve HDMI solutions work best.

You can buy them at Amazon:

CompuLab Display Emulator (fit-Headless)

CompuLab Display Emulator (fit-Headless)

Sources:

Basically the trick to simulate a monitor with a dummy load works for other display connectors as well (most of them work fine with 75 ohm resistors, usually a bit lower or higher works just as well):

Read the rest of this entry »

Posted in Apple, Mac, Mac OS X / OS X / MacOS, MacMini, OS X 10.10 Yosemite, OS X 10.11 El Capitan, OS X 10.9 Mavericks, Power User | Leave a Comment »

Index of /pdf/xerox/mouse/lyon_optical

Posted by jpluimers on 2017/08/26

Because history: Index of /pdf/xerox/mouse/lyon_optical images of the Lyon Optical mouse by Xerox.

[ ] 018P87005_D_Pointer_Pattern_Pad_Oct84.pdf 2016-10-12 13:20 206K
[ ] 43260_Lyon_The_Optical_Mouse.pdf 2016-10-12 13:22 11M
[IMG] Alto_Optical_Case_B.JPG 2016-10-15 14:55 458K
[IMG] Alto_Optical_Case_T.JPG 2016-10-15 14:55 262K
[IMG] Alto_Optical_Inside.JPG 2016-10-15 14:56 415K
[IMG] Alto_Optical_PCB_Cable.JPG 2016-10-15 14:55 451K
[IMG] Xerox_mousepad_1.tif 2016-10-12 13:19 2.9M
[IMG] Xerox_mousepad_2.tif 2016-10-12 13:19 2.2M

Some of the images:

Read the rest of this entry »

Posted in History | 2 Comments »

Performance Test WCF/WPF app – Selecting right Tool

Posted by jpluimers on 2017/08/26

Interesting read, especially because they did an extensive tool selection process. Not really up to date any more but a good start when you are looking for tools.

–jeroen

[WayBack]

Posted in Development, Profiling-Performance-Measurement, Software Development | Leave a Comment »

Amsterdam, 2.4 GHz. 5 GHz is only marginally better. In the city, wired connection is the only option: fiber, cable, dsl.

Posted by jpluimers on 2017/08/25

For me, too often – even at home – mobile internet is faster than WiFi over 2.4 Ghz and sometimes even faster than WiFi at 5 Ghz..

Further below is inside my home. I’ve no idea what these – relatively strong – networks are:

  • SANDS Wi-Fi Network (it has a MAC in the OUI list of Apple and is configured as GB device)
  • venus-HQ17128EGKE-5ae (it has a MAC in the local private range)
  • H368N8D6382 (and a network HZN242961585 that looks similar but is very different – the first has a MAC from ZTE corporation, the last from Samsung Electronics)

From Kristian Köhntopp near work in the city centre:

At my home:

A Google+ profile for Jeroen Wiert Pluimers

Source: at home… +Kristian Köhntopp

–jeroen

Via:

 

 

Posted in Power User, WiFi | Leave a Comment »

More beautiful code by Asbjørn Heid

Posted by jpluimers on 2017/08/25

If you’re in Delphi land, then Asbjørn Heid is a a guy to follow on G+.

He has some brilliant snippets (most can be found on paste.ie by searching for Asbjørn Delphi site:paste.ie).

This is actually one set:

Both via From the because-I-can department… Friday evening operator abuse. Tuple Duple [WayBack]

Then there are these:

–jeroen

Posted in Delphi, Development, Software Development | 2 Comments »

Updated: some stream URLs of Dutch radio stations

Posted by jpluimers on 2017/08/25

Online Dutch Radio streams: some direct URLs « The Wiert Corner – irregular stream of stuff:

#3FM LIVE niet zo heel live… Even geen Giel. Iemand die een HTTP live stream URL van de audio weet? « The Wiert Corner – irregular stream of stuff:

Radio 3:

Radio 10:

–jeroen

Posted in LifeHacker, Media Streaming, Power User | Leave a Comment »

Some notes on making pi-hole work on a DHCP enabled network

Posted by jpluimers on 2017/08/24

Many networks have DHCP Manual allocation (commonly called static allocation) handing out static/fixed IP addresses over DHCP so you can centralise IP address handout based on MAC (or other attributes).

Here are some links that should me get going making my pi-hole Raspberry Pi using DHCP instead of static IP addresses.

Yucky way to set a static IP: How do I set a static IP address in Raspbian “Jessie” using /etc/dhcpcd.conf? – Pi-Hole: A Black Hole For Internet Advertisements [WayBack]

–jeroen

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

Designing your way out of the CanHandle-Handle conundrum | Software on a String

Posted by jpluimers on 2017/08/23

I recently had to refactor exactly this: Designing your way out of the CanHandle-Handle conundrum | Software on a String [WayBack] so I was glad that Marjan Veenema paved the path in 2015 for me.

–jeroen

Posted in Design Patterns, Development, Software Development | Leave a Comment »

Repurposing Old Smartphones for Home Automation | Linux.com | The source for Linux information

Posted by jpluimers on 2017/08/23

At the recent Embedded Linux Conference and OpenIoT Summit, Mozilla Technical Evangelist Dietrich Ayala proposed a simple and affordable solution to home automation: A discarded smartphone can handle some of the most useful home automation tasks without requiring expensive hubs and sensors — or risking data security in the cloud.

I’ve been awaiting talks like this for years basically because I didn’t take the time to try myself.

Source: Repurposing Old Smartphones for Home Automation | Linux.com | The source for Linux information [WayBack]

–jeroen

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

Manual:CRS examples – MikroTik Wiki

Posted by jpluimers on 2017/08/22

The Cloud Router Switches support three types of mirroring. Port based mirroring can be applied to any of switch-chip ports, VLAN based mirroring works for all specified VLANs regardless switch-chip ports and MAC based mirroring copies traffic sent or received from specific device reachable from the port configured in Unicast Forwarding Database.

Port Based Mirroring

The first configuration sets ether5 port as a mirror0 analyzer port for both ingress and egress mirroring, mirrored traffic will be sent to this port. Port based ingress and egress mirroring is enabled from ether6 port.

/interface ethernet switch
set ingress-mirror0=ether5 egress-mirror0=ether5

/interface ethernet switch port
set ether6 ingress-mirror-to=mirror0 egress-mirror-to=mirror0

Source: Manual:CRS examples – MikroTik Wiki [WayBack]

This allows you to torch traffic from a specific port despite that port being grouped to a master-port.

Via: Torch not working with CRS226-24G-2S+ – MikroTik RouterOS [WayBack]

But, when using Bridge, all ports share a single 1 gbps link to the CPU, so your layer 2 performance will suffer horribly.

If you need to see all the traffic from a single port when using Master/slave port configuration, use port mirroring.

–jeroen

 

Posted in Development, Internet, MikroTik, Power User, RouterOS, routers, Scripting, Software Development | Leave a Comment »

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