Applied science ;)

Written by  on July 31, 2015

From time to time I develop some filmstrips with C41-chemicals. The data-sheet gives already some valid combinations of time/temperature, but it was lacking the one for 30°C.
I put the filmstrips for 8 min into the tank with the old Tetenal-kit. But what about the Digibase one? Linear interpolation would be not sufficient.
So lets take the sampling-points from the datasheet and do some cubic fitting (polynomial degree one less than the amount of samples).
And now what? Compute it myself? Hell no 😉
Et voila (thank Stephen Wolfram).

Fitting also shows no oscillation: good.

By the way: 7 min 30 s would be the correct time!

Increase Storage for Synology DS213 (RAID1)

Written by  on July 28, 2015

I used a Synology DS213 with two WesternDigital 2 TB-drives and RAID1 since september 2013 (?) for backup, music-storage and -remote access and for presenting my photos (via photostation). After starting the processing of analog-film strips my remaining space melted like ice in the sunshine (One 135er film as 4000dpi-HDR-scan, with intermediate results and the scaled final results takes roundabout 5 GByte!). So there was the choice to buy a completely new rack and drives and then transfer the data (safe way; old data would be never harmed; but costly) or to replace the drives one-by-one and trust on the automatic-replication of the NAS. Since I wanted to overcome my fear after that failed RAID-replication-attempt several years ago when the onboard-RAID-controller got lost and in the end NO data was restored, I chose the latter 😉

Read more…

No one said this will be easy: GT-i9506 with CM12 & no bloatware

Written by  on July 22, 2015

I just wanted to replace the OEM-Samsung Lollipop with the latest CyanogenMod-version on my Samsung Galaxy S4 LTE (GT-i9506).
So the simple plan was to: root the device; replace the ROM with CM12; add the Gapps-package; reboot and be happy ..
.. in the end I tried so many different ways involving Linux Mint, OSX 10.9 and Windows 7 as host-system; flashing via adb, heimdall and Odin; different nightlies and kernels; several gapps-packages and seven hours lifetime .. but I learned a lot 😀


    • Win7: install Samsung driver; reboot, reboot, reboot
    • root with CF-AutoRoot: guide // download – use “root checker” or some other app to verify the superuser-access before rebooting into download mode
    • flash TWRP via Odin
    • flash CM12-nightly: download
    • flash gapps: download flash minimal GApps: download (is without the useless crap)
    • wipe cache/dalvik
    • reboot and setup everything from scratch (or with some backups … you created some, didn’t you? 😀 I used “Easy Backup & Restore” – worked perfectly. K-9 Mail can restore itself ..)

edit: 20150724 replaced Gapps with “GAPPS minimal”; restored all settings, SMS, contacts, …

Qt: normalized signal-slot-connections

Written by  on July 13, 2015

While writing my last post I remembered a tool I run at least once for every project I touch (do, finish, ..): ‘normalize’.
Originally I stumbled about it while reading Marc Mutz’ blog. The downside is: currently the original download-location is not available anymore .. I will try to fix this.

The effect behind normalised signal-slot-connections is that for the whole project every connect will use the same style. No additional whitespace, no const, no unneeded variable-names, .. perfect.
Invoke it with “normalize –modify PROJECTPATH”. Without the flag it will just show the “to be changed sections”.
Never seen any downside effects.

edit: Working download-URL added!

Normalize your mp3

Written by  on July 12, 2015

I use mp3gain with and without UI for several years for normalizing my collection, because I hate it when during physical education your eardrums getsuddenly blasted to bits ‘n pieces!
Yes, album-normalisation would be more “original”, but I don’t care.

Hint is taken from that page, because I lost my old bash-history.

Win: Check ‘bitness’ of a binary

Written by  on July 8, 2015


The value for “machine” will determine the bitness:  14C stands for x86; 8664 for x64.