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I recently tried out the self-hosted version of the Umami analytics (v2 specifically).

Did you know that you can replace the fiber optic modem/router supplied by your internet service provider (ISP) with a simple SFP stick that runs Linux and does the mapping of light into Ethernet packets directly into your router?

Did you know that you can point any domain to 127.0.0.1 and it will happily resolve to your local development environment?

Turns out you can’t specify a custom email address for a new Google Account if the birthday specified during registration is for an underage person.

Turns out that macOS uses temporal dithering to achieve additional color depth when connected to external displays and most of the Dell monitors are “sensitive” to level 16 of gray (which actually fluctuates between levels 15 and 17) as it happens at the…

The ideal wood siding is one that doesn’t need maintenance and looks consistent for the duration of its lifetime.

Had a deeper look at the FAIR package manager today.

WordPress comments are missing critical functionality to really embrace engagement and community — there are no notifications when your comment is approved or gets a reply, which prevents any kind of continued discussion.

Since versions 7.18 of RouterOS I’ve been having trouble with the LTE connection on Mikrotik wAP LTE kit (Amazon) with R11e-LTE6 modem (firmware V038) where it would randomly go into an infinite loop of lte1 link up and lte1 link down every few days.

When setting up the podcast for my wife’s business, I applied the following customizations to the Seriously Simple Podcasting plugin for WordPress: Disable Podcast Feed Stylesheet By default the plugin applies an XSL stylesheet to the podcast RSS feeds wh…

WordPress multisite prevents everybody but super-admins from adding HTML blocks with <script> and <iframe> tags — also known as unfiltered_html capability which adds the following restrictions (enabled here).

WordPress login and XML-RPC endpoints at wp-login.php and xmlrpc.php respectively are the mostly widely abused targets for bots scanning the web for sites with weak passwords.

I wasn’t able to find a tool to resize and center all open windows to a specific size for screen recording, so I came up with this AppleScript: set windowWidth to 1024 set windowHeight to 768 tell application "Finder" set {0, 0, screenWidth, screenHeight}

Available for around $130 on AliExpress (including shipping) or from the manufacturer store, Airbank D13 Puffer Pro is a battery powered two-stage pump that delivers up to 20 psi (1.4 bar) of pressure.

Bafang M200 mid-drive motor (model MM G210.250.C) with 36V battery connector (yellow, from left), empty 6-pin electric break connector (purple), 8-pin rear light and wheel speed connector, and 8-pin front light and display connector.

UDCB094 adaptor with true PD 65W output via USB-C.

Meshtastic is a wonderful project for creating decentralised text-based communication networks for local communities using low power (and low cost) Lora radios.

I’ve always wanted a rack mount UPS for all of our homelab gear, and PowerWalker VI 500 was pretty much the cheapest option at EUR 192 at the time.

Update (2025): Beelink now offers N5105 as part of their Mini S12 and Mini S13 line-up which also includes more recent Intel CPUs such as N95 and N150 (recommended).

Until recently Zemismart ZMHK-01 was the only Zigbee hub with Apple HomeKit integration.

It is a single unit for ventilation with heat recovery and a heat pump against the exhaust air for heating or cooling the incoming air and producing domestic hot water, and another heat pump against ground loop for additional heating or cooling.

The diminishing returns of insulation thickness is a legend referenced by many builders and architects which is actually incorrect.

With electric hot water heaters it is possible to use smart sockets with energy meter capabilities to measure the electricity consumption when the water is not actually used and is heated only to maintain the set temperature.

Tuya 4in1 PM Box (Smart Air box) with CB3S module (Wi-Fi) on the left (blue case) and Tuya 6in1 Air House Keeper with ZT3L module (Zigbee) on the right (white case).

The Passive House standard has two magic numbers related to the heating and cooling requirements for buildings — 15kWh is the maximum allowed heating and cooling demand per square meter per year and 10W maximum allowed instantaneous heating or cooling load

Zemismart ZMHK-01 (AliExpress) is one of the few hubs that is compatible with Apple HomeKit and can expose non-HomeKit Zigbee devices in the Home app similar to the Aqara G2H camera hub.

Hiking DDS238-2 ZN/S is a cheap €20 single phase energy meter which can measure import and export energy in addition to all the standard parameters, and has a Modbus interface over RS485.

Aqara G2H (ZNSXJ12LM) is a really nice Zigbee hub and indoor camera with official HomeKit support.

Gree GWH09YD-S6DBA1A indoor heat exchanger power connectors, PCB with IR and WiFi modules.

MySensors is a great project for building IoT devices but it tries to do many things — define a general serial communications protocol (similar to ModBus, CAN), provide a software library for many hardware devices on top of the Arduino abstraction layer,…