Author Archives: robert

So many catz…

Posted on June 18, 2016 by robert

If you hate cats skip the 1st video! “Magic Fly” – Space 1977

Posted in Something Completely Different | Tagged 70s, cats, disco pop, music, synth, video | 1 Comment

BORG Backup — Deduplicating Archiver

Posted on May 5, 2016 by robert

The documentation is very usable, easy to understand. Getting the basic things going is very easy. The code is on github. It’s worth taking a look and having a go at it! You do know that you NEED a backup, … Continue reading →

Posted in Computer / Server, Software. | Tagged backup, BORG, data, deduplication, paranoia, PartedMagic, restore | Comments Off

Metabolic and physiologic improvements from consuming a paleolithic, hunter-gatherer type diet

Posted on April 26, 2016 by robert

Some time ago I wrote about said paper. To be more precise, I didn’t write about the science per se (not my area of expertise), but I wrote about having had noticed an error in it. I tried to get … Continue reading →

Posted in Something Completely Different | Tagged correction, diet, EJCN, glucose, insulin, metabolic parameters, nutrition, paleo, paper | Comments Off

YOUYUE 858D+ hotair station — Release V1.45

Posted on March 31, 2016 by robert

A small but helpful upgrade, if you’re into acquiring your own temperature calibration data. At some undetermined time in the future this might be expanded to a full multi-point calibration mode. The config menu was amended with the parameter ‘display_adc_raw’. … Continue reading →

Posted in Electronics. | Tagged 858D+, ADC, calibration, data, hotair, raw, soldering station, upgrade, youyue | Comments Off

YOUYUE 858D+ hotair station — Bugfix release V1.44

Posted on March 5, 2016 by robert

I’m glad to announce that the annoying watchdog issue has finally been fixed. It was a dumb error on my side, combined with a prevalence in some ATmega chips to have certain binary values in uninitialized registers after a cold … Continue reading →

Posted in Electronics. | Tagged AVR, avr-libc, Bozo, Bugfix, init1, init3, memory sections, mistake, RTFM, watchdog, youyue, zeroReg | 2 Comments

Happy New Year 2016

Posted on December 31, 2015 by robert

PBFComics – RESET

Posted in The Dump. | Tagged 2016, happy new year | Comments Off

2015 — What a year!

Posted on December 31, 2015 by robert

The year twenty-fifteen has had a lot in stock for me and my family, both near and far. There was death, illness, strenuous recovery, unexpected relapse, and much other crap nobody really wants nor needs. “A bit much” you could … Continue reading →

Posted in Dear Diary. | Tagged life | Comments Off

Insidious back-stabbing planned obsolescence — SNAFU

Posted on November 23, 2015 by robert

I needed a new shopping basket. The old one had broken down after many years of abuse. In the process it killed a cheap bottle of red wine, which made a nice big puddle on the floor, much to the … Continue reading →

Posted in The Dump. | Tagged cheap plastic, planned obsolescence | Comments Off

PartedMagic — Booting ISO image from GRUB2 / openSUSE

Posted on November 10, 2015 by robert

Please note: this is not an excuse not to have a bootable USB-stick for true emergencies. This is just for convenience.

#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.

menuentry 'Parted Magic 64' {
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_msdos
	insmod ext2
	set root='hd0,msdos1'
	insmod loopback
	insmod iso9660
	insmod udf

	set isofile="/pmagic/pmagic_2015_01_13.iso"
	loopback loop $isofile
	linux (loop)/pmagic/bzImage64 iso_filename=$isofile load_ramdisk=1
	initrd (loop)/pmagic/initrd.img (loop)/pmagic/fu.img (loop)/pmagic/m64.img
}

#!/bin/sh

exec tail -n +3 $0

# This file provides an easy way to add custom menu entries. Simply type the

# menu entries you want to add after this comment. Be careful not to change

# the 'exec tail' line above.

menuentry 'Parted Magic 64' {

load_video

set gfxpayload=keep

insmod gzio

insmod part_msdos

insmod ext2

set root='hd0,msdos1'

insmod loopback

insmod iso9660

insmod udf

set isofile="/pmagic/pmagic_2015_01_13.iso"

loopback loop $isofile

linux (loop)/pmagic/bzImage64 iso_filename=$isofile load_ramdisk=1

initrd (loop)/pmagic/initrd.img (loop)/pmagic/fu.img (loop)/pmagic/m64.img

}

File download On openSUSE (13.2), this file needs to be placed into “/etc/grub.d/”. After that run “yast2 bootloader” … Continue reading →

Posted in Computer / Server | Tagged backup, boot, grub2, ISO, opensuse, PartedMagic | Comments Off

Low Carb Cheese Cake — yet another attempt

Posted on November 2, 2015 by robert

Don’t worry, this blog won’t transform into an adulation for pastry and the likes. At least not for pastry coming from conventional bakeries with tons of sugar and seeds of grasses. ! LET IT COOL AND REST IN THE FRIDGE … Continue reading →

Posted in Something Completely Different | Tagged baking, cake, cheese, eggs, keto, lowcarb, Stevia | Comments Off

YOUYUE 858D+ hotair station — BLDC Fan-speed mod

Posted on October 23, 2015 by robert

I’ve finally forced myself to layout a small board. It’s been far too long anyway. It consists of these building blocks: reference voltage, comparator, RC low-pass, gain. There are better methods for the job, e.g. using a digital one-shot to … Continue reading →

Posted in Electronics. | Tagged 858D+, BLDC, commutation, fan, mod, speed, youyue | 24 Comments

Error U81 — Panasonic DMR-EX75 repair

Posted on October 19, 2015 by robert

Some explanation:

Posted in Electronics., Fix me. | Tagged capacitor, DMR-EX75, electrolytic, error U81, fix, MD5001T, panasonic, repair, soldering | Comments Off

Some old 3D design — memory lane

Posted on September 24, 2015 by robert

Just images and 2 short videos.

Posted in The Dump. | Tagged 3D, AutoDesk, CAD, Inventor, Mathematica, memory lane, Optica, Wolfram | Comments Off

Is it just me or is there something wrong with those number?

Posted on September 23, 2015 by robert

If you are so inclined, please have a look at this. No electronics of any kind, but a scientific publication about diet / nutrition. “Metabolic and physiologic improvements from consuming a paleolithic, hunter-gatherer type diet”, LA Frassetto et al., EJCN, … Continue reading →

Posted in Something Completely Different | Tagged diet, EJCN, glucose, insulin, metabolic parameters, nutrition, paleo, paper | 1 Comment

Fawlty USB3.0 controller card — DC-DC noise?

Posted on September 18, 2015 by robert

Well, this won’t make it any easier! Not at all…

Posted in Electronics. | Tagged ACT4060A, buck, DC-DC, noise, regulator, TD6810, testing | Comments Off

Fawlty USB3.0 controller card — quick DC-DC regulator check

Posted on September 17, 2015 by robert

This card is pretty good, when it works. Transfer-speeds were fine, close to 100MB/s with an external USB3 disk. It works nicely with Linux – plug and play. Then the problems started…

Posted in Electronics. | Tagged ACT4060A, buck, controller, DC-DC, efficiency, PCI-E, regulator, Renesas, TD6810, testing, USB3, µPD720202 | Comments Off

It looks nice on graphs, but there’s so much to not understand

Posted on September 11, 2015 by robert

Posted in Electronics. | Tagged Nyquist, sampling | Comments Off

“Easy” remote-admin — static systemd service

Posted on September 9, 2015 by robert

In the previous two posts we dealt with the script ‘after.local’, which is a remnant on openSUSE of the ‘init’-days, before systemd became the standard. After looking more closely, it turns out that there is a ‘unit-file’ for ‘after.local’ backward-compatibility. … Continue reading →

Posted in Computer / Server | Tagged systemd, unit-file | Comments Off

“Easy” remote-admin — take 2

Posted on September 8, 2015 by robert

In my previous post I described a method for a boot-activated remote-admin option for my parents’ computer. On 2nd thought, it is not always a good idea to rely on changing system-wide configurations (such as sshd_config, firewall…) In this post … Continue reading →

Posted in Computer / Server | Tagged admin, iptables, linux, port forwarding, remote, router, SSH, sshd, VNC | Comments Off

Author Archives: robert

So many catz…

BORG Backup — Deduplicating Archiver

Metabolic and physiologic improvements from consuming a paleolithic, hunter-gatherer type diet

YOUYUE 858D+ hotair station — Release V1.45

YOUYUE 858D+ hotair station — Bugfix release V1.44

Happy New Year 2016

2015 — What a year!

Insidious back-stabbing planned obsolescence — SNAFU

PartedMagic — Booting ISO image from GRUB2 / openSUSE

Low Carb Cheese Cake — yet another attempt

YOUYUE 858D+ hotair station — BLDC Fan-speed mod

Error U81 — Panasonic DMR-EX75 repair

Some old 3D design — memory lane

Is it just me or is there something wrong with those number?

Fawlty USB3.0 controller card — DC-DC noise?

Fawlty USB3.0 controller card — quick DC-DC regulator check

It looks nice on graphs, but there’s so much to not understand

“Easy” remote-admin — static systemd service

“Easy” remote-admin — take 2

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Author Archives: robert

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