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prasimix
prasimix 1 day ago
The latest video of the EEZ BB3...
EEZ Bench Box 3
Russin Sir Bullar
Russin Sir Bullar 1 day ago
How big a problem is it to improve an already amazing soldering station? Actually ? You have sold a lot of these, so surely more than just 2 want to be able to utilize Wellers 150 Watt solder tips! Sorry if my questions are stupid but isn't it just a replacement: IRF9540 for a more powerful and mount it on a heat sink or the side of the box that puts everything inside? Can't you start there and then expand the possibilities according to the previous speaker's wishes? Also: If you are a "fan" of old linear PSU instead of modern Switched: Is it enough with a transformer of 150-200 VA + a rectifier bridge and a smoothing capacitor or do you need stabilization as well? Weller RT U series of soldering tips fit just as well in the 3.5 mm jack as RT P and RT M. Then someone here attached  a modified downloadable code but now it's gone - why?
180348 DIY soldering station
Volker
Volker 2 days ago
Dear Tarsonis, thank you for your interest. The small pin-diode based detector was used mostly for illustrative putposes and that the students could experiment with a detector that resembles the HPGe detector, which was used to analyse the dried mushrooms the pupils sent back to us.  Some of the results are available in the nucelar physics news link http://doi.org/10.1080/10619127.2019.1603559 which is already given in another comment and there is a conference report forthcoming.  
Radiomush, radiology of mushrooms, 30+ years after Tjernobyl
Philippe_
Philippe_ 2 days ago
Sur la newsletter française, Elektor parle de grillons. Or ce sont des photos de criquets… C'est pas la même chose.
Emulating a Thermometer Cricket with Arduino
Tarsonis
Tarsonis 3 days ago
Hello, maybe I've misread the links, but I can't find measurement you got from project with PIN diode. As the Bq/kg I've found are about hundreds or thousands, I guess they are not from the small PIN diode that is giving to me ~ 1CPM in best cases. I've tried on swedish webiste (massexperiment) but keywords as CS137 are not giving results. Would it be possible to get a direct link to those measurements ? Thanks !
Radiomush, radiology of mushrooms, 30+ years after Tjernobyl