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Monthly Archives: January 2018

Teardown

3D shutter glasses teardown

22. December 2020 danman Leave a comment

These are for DLP-Link projectors which can quickly strobe white frame between video frames for shutter signalling. You can read more about this technology here. They use specialized chip TPS65835 which integrates most of the needed functionality. Maybe I’ll try some hacking on this later.

3d glassesboarddissassemblydlp-linkteardown
Cheap 433Mhz receivers comparison
Projects

Cheap 433Mhz receivers comparison

22. January 2018 danman 1 Comment

I bought 2 cheap 433Mhz receiver modules from aliexpress for comparison. Continue reading Cheap 433Mhz receivers comparison →

433Mhzcomparisonoutputscopewireless
Old radio clock upgraded to NTP
Projects

Old radio clock upgraded to NTP

29. March 2018 danman 1 Comment

I own the radio clock on the title picture. I’ve used it for some time but it annoyed me because it drifted a lot (several seconds a day). It’s synchronized to power network frequency but it doesn’t work well in my case and I hate to adjust the clock over and over again. So I decided to sync it automatically using esp8266. Continue reading Old radio clock upgraded to NTP →

DIYesp8266IoTNodeMCUNTPradio clockupgrade
Openshift: exit code 137
Linux, Openshift

Openshift: exit code 137

7. January 2018 danman Leave a comment

If your pod exited with exit code 137 so you see something like this in pod Details page:

Last State  Terminated at Jan 7, 2018 5:00:15 PM with exit code 137 (Error)

your pod has been killed with signal 9. Continue reading Openshift: exit code 137 →

137exitoomopenshift
How to recover containerized etcd in Openshift cluster
Linux, Openshift

How to recover containerized etcd in Openshift cluster

7. January 2018 danman Leave a comment

If you tried to add node to your etcd cluster and it failed, your cluster may have lost quorum and will not start again. To recover it you need to create new cluster identity. This is a short howto. Continue reading How to recover containerized etcd in Openshift cluster →

dockeretcdopenshift

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  1. Leo Waser on About adding a static route to my DOCSIS modem25. July 2025

    That is Gigabit not Gigabyte, 1 Gigabit = 1/8 Gigabyte ~ 124MB

  2. aurel1510 on SSH autentifikacia s eID obcianskym preukazom pod Linuxom25. July 2025

    Zdravím, nejde mi písať Vám e-mail cez formulár v kontaktoch, tak takto Vám to aspoň pošlem: Dobrý deň, Čítal som…

  3. Leo Waser on About adding a static route to my DOCSIS modem24. July 2025

    ok i have a full dump, there were a few problems that caused different parts of that Dmesg output: too…

  4. Leo Waser on About adding a static route to my DOCSIS modem23. July 2025

    I'm having some issues... when i plug in the bodged sd card i get: [ 8214.402393] mmc0: SDHCI controller on…

  5. Leo Waser on About adding a static route to my DOCSIS modem22. July 2025

    with the correct pinout we don't have to rely on 1-Bit mode sd card readers and can instead just use…

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