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 2.GQ Geiger Muller Counter
 Rad Pro 3.1 released — custom firmware update for		  New Topic  Reply to Topic
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Gissios

1 Posts
Posted - 04/24/2026 :  20:58:28  Show Profile  Reply with Quote
Hello all,

Rad Pro 3.1 has just been released. For GMC-800 owners who are running the open-source Rad Pro firmware (or considering it), here is a summary of what's new in this version.

For those unfamiliar with the project: Rad Pro is an open-source alternative firmware that runs on the GMC-800 alongside several other Geiger counters. It is reversible — the original GQ firmware can be flashed back at any time. Project page and source: https://github.com/Gissio/radpro

What's new in 3.1:

* New default tube sensitivity values for common Geiger-Müller tubes, derived from numerical simulations using the companion project Rad Lab (https://github.com/Gissio/radlab). For the M4011 in the GMC-800, the new defaults should give more physically grounded readings out of the box. Hence the codename "Credible Sources."
* Source presets — pre-configured sensitivity settings for common radiation sources (Cs-137, Co-60, etc.), also based on Rad Lab data.
* New Cumulative and Instantaneous secondary measurement views.
* Warnings now use short beeps and brief haptic feedback.
* Option to submit measurement data to openSenseMap.org.
* User interface updated to OpenBridge 6.1.
* Documentation split into a User Manual and a Technical Reference Manual; new procedure for setting HV without a multimeter.
* Performance and memory optimizations across the firmware.

GMC-800 specific changes in 3.1:

* Eliminated LCD ghosting artifacts on the GMC-800.
* Several minor bugs fixed.

Update procedure for GMC-800:

Use the Rad Pro web installer at https://gissio.github.io/radpro-installer/ to install or update. If you are coming from stock GQ firmware, the installer handles the initial flash; if you already have Rad Pro 3.0 or later, the same installer performs the update.

Full release notes: https://github.com/Gissio/radpro/releases/

Bug reports and feedback are best directed to GitHub Issues or the project's Discussions page. Happy to answer questions here as well.

Regards,

Gissio
Edited by - Gissios on 04/26/2026 09:19:36
Reply #1

ullix

Germany
1245 Posts
Posted - 04/25/2026 :  00:25:22  Show Profile  Reply with Quote
You can now also replace the firmware for a GMC-800 ? Compliments!

Is the latest version of Radpro still compatible with the old ones, in particular, will GeigerLog work with it unchanged?
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Reply #2

Michel2017

Germany
7 Posts
Posted - 05/01/2026 :  21:11:43  Show Profile  Reply with Quote
quote:
Originally posted by ullix

You can now also replace the firmware for a GMC-800 ? Compliments!

Is the latest version of Radpro still compatible with the old ones, in particular, will GeigerLog work with it unchanged?



Seems not...GeigerLog does not recognise the device
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Reply #3

ullix

Germany
1245 Posts
Posted - 06/02/2026 :  01:35:52  Show Profile  Reply with Quote
@Michel2017:
I have now confirmation that GeigerLog works with RadPro 3.1.1 when installed on a FNIRSI GC-01 device :
On port: 'COM1'  found RadPro device with Hardware Id: 'FNIRSI GC-01 (APM32F103CB)' and Software Id: 'Rad Pro 3.1.1/de'
As Gissios seems uninterested in helping, I wonder whether you could help? Simply file a ticket at SourceForge
https://sourceforge.net/p/geigerlog/tickets/
and I'll tell you, what I need.

The problem seems to lie in the Identifier (like above: 'FNIRSI GC-01 (APM32F103CB)')
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