Forest mood lamp build

I built a tree shaped lamp from thingiverse along with extra parts to insert WS2812 (neopixel) strips.
Continue reading ...I built a tree shaped lamp from thingiverse along with extra parts to insert WS2812 (neopixel) strips.
Continue reading ...I have Raspberry Pi's in different rooms, and one thing I use them for is to play music to speakers.
Each of them has two music player services on it (MPD, Spotify), and it's a bit annoying that I have to stop a player when I want to listen to the other one.
Since I'm running home assistant as an automation hub, I wrote two short automations that stop the already playing service when the second one kicks in.
Continue reading ...In the summer of 2019, I bought my first 3D printer, a Prusa MK3s. I've been super happy with this sweet toy, it works like a charm.
Let me tell you a bit about my experiences with it...
Continue reading ...One of the first things I built when I got my 3D printer was a housenumber sign. I made the writing stand out in contrast by using a filament swap at layer height.
Continue reading ...We used to have a gas-powered central heating system that had no external controls other than radiator valves. It had a sun-exposed exterior temperature sensor on the west side of the house that caused it to refuse to heat in the evening.
I wanted to fix the issue and control it via Home Assistant, and since only the newer models had bus control, I resorted to manipulate the outside sensor readings and designed a man-in-the-middle device.
Continue reading ...When a friend of mine showed the awesome little wooden Jukebox he made for his kids, I loved the idea, and knew I could make a similar contraption by recycling an old Raspberry Pi 1 I had on a shelve.
Continue reading ...I hand-built several LED strip controllers with Wemos D1 mini boards and prototyping board. We used them to light our living room.
Continue reading ...My 2017 Christmas present was a voucher for the local electronics shop. I spent it on an 'official 7" raspberry pi touch screen display', which is a nice capacitive touchscreen that you can hook up to a raspberry pi.
I 3d-printed an enclosure from Thingiverse for it, and fitted an RGB LED string around the edges as an extra.
Initially I created an AppDaemon HAdashboard configuration to control my Home Assistant instance with it.
Continue reading ...In the winter of 2016, someone gave me a controller board for a heater. The heater is pretty scary, it burns fuel and blows exhaust and hot air out of what looks like a canon. It has some interesting mechatronics; a fuel valve, an ignition coil, and a fan. It has a flame detection sensor input as well, as a safety feature. I succeeded at repairing the board, but had to write the controller software from scratch.
Continue reading ...In 2015 we moved into a house which had a condensing gas boiler. When the previous owners installed it, they never installed a drain pipe to dispose of the water that it produces. Instead there was... a bucket that had to be emptied every week. I quickly grew tired of emptying the bucket. With no obvious way to direct the water except over the ceiling, I needed a device that would pump the water. This sounded like a fun DIY project, so I ordered some float switches and a 12VDC membrane pump, then got busy and soldered a simple set/reset controller with... Guess which old-school IC...
Continue reading ...I wrote down tips and tricks I use with VIM.
Continue reading ...As final project for my Professional Bachelor degree Electronics - ICT, I developed embedded software. I built a custom Linux based device that acts as an 'Art-Net node', converting a serial DMX-512 stream to network packets.
After a few months of work, I was able to present a working system, with …
Continue reading ...Ssh ideas for the power user.
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For a school project early 2007 (a study of embedded Linux on the AT91RM9200 ARM9 processor) I got familiar with the GNU development tools and setup required to run a Linux based operating system.
Using the setup described here I was able to inspect the inner workings of Darrell loader in real time, set hardware breakpoints, step through the program flow and inspect values of program variables while the CPU core was halted.
Continue reading ...Visual Basic used to be an easily accessible programming language for the windows platform. I spent quite some hours and a lot of creativity with it years ago, and the result is a bunch of half-finished programs. I started creating stuff with VB6 out of interest when I was a …
Continue reading ...My old server functioned as an internet gateway and DHCP and masquerading DNS server. The last two are not necessary, but it's always easy if you just have to plug you cable into the LAN, and don't have to configure your network adapters. It also ran an Apache web server …
Continue reading ...When I started maintaining a personal website years ago, I kept all content in static HTML files which I uploaded. The server didn't support server side scripting and for a while I used a JavaScript to provide a navigation menu.
The JavaScript menu fixed just that, navigation. Devising a publishing …
Continue reading ...DenAgenda is a webservice written in Python program I hosted on my webserver. It converted my college's online timetable from HTML (screen-scraping) to the iCalendar format, which is a standardized calendar file format.
The obsolete sourcecode is available under GPL 2 license and is available as a git repository:
Continue reading ...I wrote this article on using a microprocessor board with GNU tools for an embedded software class back in 2006. It's written in Dutch.
Continue reading ...When my brother was doing his last year of high-school in electromechanics, he came up with the idea of doing his final project using a homebuilt PLC instead of the usual Siemens stuff. I built the electronics and came up with a framework so he could easily implement his GRAFCET state machine for his part sorting robot for the PICMICRO in the JAL programming language.
This was long before Arduino, long before 'all the cool kids were doing it', and JAL was a free compiler for the affordable PIC microcontrollers. The Arduino of its days.
Continue reading ...Here are some screenshots (anno 2006).
Continue reading ...In this text I explain how to configure a Linux server so that it can be used with a serial terminal (like the Qume qvt101). This document is not Linux distribution-specific, and applies to any recent distribution that uses agetty (other getty programs should work too, but program's parameters may differ).
Continue reading ...Tkskymeter 2.1.0 schermafdruk
Skymeter is a utility targeted at Belgacom [1] customers. Belgacom has a very restrictive policy towards the amount of data its customers can download with its broadband internet service.
Skymeter polls the meter webpage of the Belgacom 'Self care' [2] website and presents the useful …
Continue reading ...I wrote this syntax highlighting file for Vim because I had an Intel 8051 course in 2005, and wanted to do my coding in Vim. It's totally optional to have syntax highlighting, but it does give you many advantages. This .syn file will make sure recognised mnemonics and registers are …
Continue reading ...Fetching POP3 mail over an untrusted WiFi public access point is dangerous, as the password is transmitted unencrypted (in plain text). Anyone with a laptop and a suited program can sniff your password right out of the air, along with your email. Sending mails is also impossible most of the …
Continue reading ...Note
This is a how to about using an 8051 assembler used in a college course with POSIX compatible operating systems using Dosbox. It was only useful to my fellow students at the De Nayer institute, so I wrote this in dutch.
I use this spot to put links to miscellaneous binaries I provide on my website.
Filename | Comment | Size | |
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16f84_clock.sch | Pic84 Clock schematic | 85715 bytes |
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16f84_clock.zip | Pic84 Clock Sourcecode + hexfile | 14340 bytes |
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JCS_1.0.6_SOURCE.zip | Jal Code Studio 1.0.6 Sourcecode | 852150 bytes … |
Gadget-maniac like me? Then how about some electronic junk you hook up to your computer's unused I/O ports? These toys are simple to understand, have few parts and are therefore cheap and easy to build!
Continue reading ...On one of the last days of august 2005 I purchased a brand-new 12" G4 Apple iBook Laptop. This page is dedicated to this beautiful piece of hardware, I will share my experiences here. You can also read here how I installed Gentoo Linux on it back then.
Continue reading ...I usually have more than one computer set up in my bedroom, a whole LAN segment so to speak. I used to network them together using a 10mbit hub (with a coax connector connected over the (75 ohms television coax) to other PC's in the house because it was the …
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