Tech blog

This blog is for my future and past info and reviews on various tech stuff….

Phones / Phablets
Compact cameras
Various tech
Various tech stuff
Resolution and Noise
Batteries and usage
Code examples
Other stuff
Other stuff

Newer reviews can be expected to be ongoing projects, with minor additions or corrections.

Note: When I rate stuff, a 10/10 does not indicate perfect in an absolute academic sense, but as in (at least) as good as could be expected at the time, minor flaws allowed. For portable devices typically limited by the size and weight. Value for money also counts. An electronic device that got a high score in 2005, most likely would seem like pure trash ten years later….


  • Partition backup, unlocked Android phones, through Recovery.

    Have you ever wanted to backup entire partitions of your Android phone?
    Well it actually is quite easy for an unlocked device – Does NOT need to be rooted.
    ADD: This requires the presence of a recovery boot option! E.g. from LineageOS

    (The above image is ‘borrowed’ from here)

    Continue reading...


  • Unihertz Titan Slim, First impression, compared with others

    A small compare between Unihertz Titan Slim and some keyboard alternatives.

    (2022-08-09, minor additions to original)

    Continue reading...


  • Diagonal to width, simple fractions. Different aspect ratios

    Obviously it is easy to calculate the diagonal of e.g. a sensor from the width and height with Pythagoras.
    And a bit more tedious the other way round using the aspect ratio. [*]
    But for common aspect ratios it is even simpler, 1+1/n fractions within less than 0.4%

    Continue reading...


  • Automower 435X AWD, Husqvarna, review.

    This Automower 435X AWD is an upgrade from my 330X, See review here.

    Overall: 9/10. Hardware: Fine. Software: Improved, still unpolished!

    This is both a continuation of the previous Automowers and a fundamentally different approach

    Initial review 2019-08-06.

    Review updates:
    , Some stuff are fixed with newer firmware.

    2020-08-05 This review has evolved over time from an early review, with several updates, so bare with me, that things are not in a straight chronological line…

    2020-09-05 Updated with new stuck-bug

    2020-11-01 Updated with more elegant stop-protector

    2021-04-28 Updated on serious bug during winter-storage.

    2021-05-17 Updated after change of rear motors.

    2022-05-01 Updated after new software.
    (added lawn sketch)

    2022-06-10 Updated after new mapping finally finished.

    2022-06-28 Workaround to ignore the uselessly incorrect  GPS-map!!!

    2022-07-16 Reset and dirt under jog-wheel


    Continue reading...


  • Huawei Band 6 vs Band 7

    The main difference is a better band-attachment. But there is a dragon … (unless on Ios)

    Continue reading...



Newer postings are in English (well sort of, bare with me, non-native…), some earlier than 2010 just blunt copies of the texts in Danish.

Collecting of old stuff started May 2015. Entries are generally attempted dated with original stamps, even if they are somewhat updated since, several reviews have been ongoing ‘projects’.