Software bug in Czechrads

[Rob Oudendijk]

Jan,

I am stared to wonder how the CPM counts are calculated in the Czechrad. Many submitted drives have at the start levels that seems not accurate. Are you using 5 seconds, 12 bucket system and averaging over 1 minute.  Like we use in the bGeigieNano and bGeigieZen ?

Warm regards

Rob

[Jan Helebrant]

Dear Rob,

not sure about this, but asked our technician for details and will let you know.

regards

Jan

Dne neděle 7. září 2025 v 7:37:44 UTC+2 uživatel oudend...@gmail.com napsal:

[Jan Helebrant]

Dear Rob,

initial versions of CzechRad firmware used CPM calculation from 5s pulses (e.g. CPM = CP5s * 12). Current version uses moving average.

I would also like to point out that we advise users to turn on CzechRad in advance so that the GPS drift can be corrected. Those "bad" starting points are no longer part of the uploaded LOG file.

regards

Jan

Dne pondělí 8. září 2025 v 20:04:23 UTC+2 uživatel Jan Helebrant napsal:

[Rob Oudendijk]

Dear Jan,

Thank you for the explanation. The new version is called Czechrad V2.0.0?

Warm Regards

Rob

Regards,

Rob Oudendijk Yuka Hayashi

https://yr-design.biz   https://oudendijk.biz  https://about.me/robouden

tel +81 80-22605966  Skype: robouden  Facebook:robouden linkedin:robouden  

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[Jan Helebrant]

Dear Rob,

As far as I know, this only reflects major firmware version changes - i.e. 1.x vs 2.x - but unfortunately not minor version changes.

So you won't recognize data from a device with firmware version 2.0.1. from version 2.0.3. This may be partly due to the concern that the API might not accept a file with a different string in the header.

But if it's not a problem, I'll ask our technician/developer if the FW version couldn't be included in the file header in the future firmware versions.

regards

Jan

Dne středa 10. září 2025 v 15:24:51 UTC+2 uživatel oudend...@gmail.com napsal:

[Jan Helebrant]

Dear Rob,

we are planning some minor changes in the firmware. Is it OK for SAFECAST API if we add the firmware version in the header?

eg. instead of all LOGs having header like

# NEW LOG
# format=2.0.0CzechRad
# deadtime=on

We would have some with

# NEW LOG
# format=3.0.1CzechRad

# deadtime=on   

other with

# NEW LOG
# format=3.0.5CzechRad
# deadtime=on   

etc. Am I right that the API does not use the "format" field for anything and just displays the content on the bGeigie import page?

regards

Jan

PS: we decided it might be useful to have the firmware info in LOG files - especially for debugging and user support

Dne sobota 13. září 2025 v 15:09:32 UTC+2 uživatel Jan Helebrant napsal:

[Rob Oudendijk]

Jan,

Thanks for letting us know. Sure no problem. 

The more information we have about the device, the better.

Hugs and peace,

Rob

Regards,

Rob Oudendijk Yuka Hayashi

https://yr-design.biz   https://oudendijk.biz  https://about.me/robouden

tel +81 80-22605966  Skype: robouden  Facebook:robouden linkedin:robouden  

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[Rob Oudendijk]

Jan,

FI..Some extra information on how the Zen calculates difference from the Nano.

Hugs and peace,

Rob