Search found 613 matches

by Steven Sesselmann
29 Jun 2019, 16:44
Forum: Software
Topic: GEIGERBOT for Iphone
Replies: 30
Views: 1097

Re: GEIGERBOT for Iphone

Conor,

In typical apple weirdness, my settings window seems to be missing the Mic setting.

My iPad Mini 2 software version is 12.3.1

Steven

ipad.PNG
iPad
by Steven Sesselmann
29 Jun 2019, 08:59
Forum: Software
Topic: GEIGERBOT for Iphone
Replies: 30
Views: 1097

Re: GEIGERBOT for Iphone

Conor, I just installed Geigerbot on my iPad, and it's a no go, the app displays some red text "Microphone Permission Denied, No Input Available" When I go to the iPad settings under Privacy >> Microphone the Geigerbot app is not on the list. I have another app called Atom which also uses the mic in...
by Steven Sesselmann
28 Jun 2019, 15:55
Forum: Software
Topic: GEIGERBOT for Iphone
Replies: 30
Views: 1097

Re: GEIGERBOT for Iphone

Conor,

This is interesting information, we have been recommending 1K resistor.

Let me try and replicate your experiment on the weekend.

Steven
by Steven Sesselmann
26 Jun 2019, 10:07
Forum: Software
Topic: Time for a new app
Replies: 11
Views: 398

Re: Time for a new app

Hi devilmasah, Good progress on the app and yes send Marek and email. Okay I just noticed that we haven't been formally introduced, one of the forum rules here is that we post with our real names. Since the discussions are of a scientific nature it is important to know who said what and why, real na...
by Steven Sesselmann
25 Jun 2019, 10:31
Forum: Spectrum
Topic: Exposure and Dose Assessment, an Homemade Attempt
Replies: 5
Views: 277

Re: Exposure and Dose Assessment, an Homemade Attempt

Massimo, If you look at the diagram I posted above, it seems reasonable that you can correct for the absorption error simply by adding a constant to the distance between source and crystal (radius). Say in the above example you simply add 10 mm, this suggests that the crystal is 10 mm further away t...
by Steven Sesselmann
25 Jun 2019, 10:08
Forum: The lounge
Topic: Bought myself a new toy..
Replies: 7
Views: 378

Re: Bought myself a new toy..

hah...love the lead pig, maybe we can make one in the shape of a pig :D

Steven
by Steven Sesselmann
24 Jun 2019, 13:50
Forum: Spectrum
Topic: Exposure and Dose Assessment, an Homemade Attempt
Replies: 5
Views: 277

Re: Exposure and Dose Assessment, an Homemade Attempt

Massimo, Ditto, neat work.... One of the problems you come across when taking measurements at such close range, are the angles of absorption. As you can see from my notes on your diagram, the crystal is not efficient at absorbing those gamma rays which only travel through 1/2" of the crystal before ...
by Steven Sesselmann
24 Jun 2019, 11:09
Forum: The lounge
Topic: Youtube Documentary
Replies: 0
Views: 84

Youtube Documentary

Hi All, I came across this documentary on Youtube, featuring Carl Willis and Taylor Wilson, it appears to be professionally filmed and quite interesting. I have indirectly known both Carl and Taylor since they were both in high school, at the time (around 2005) we were all building fusors and debati...
by Steven Sesselmann
23 Jun 2019, 21:02
Forum: Software
Topic: Time for a new app
Replies: 11
Views: 398

Re: Time for a new app

Nice progress... If you look at the way Marek has done it, you will see that his method is immune to baseline drift, each pulse is sampled, normalised and zeroised so the sum of all samples alway equals zero. This is then compared to the mean pulse shape and accepted or rejected according to the set...
by Steven Sesselmann
23 Jun 2019, 12:10
Forum: Software
Topic: Time for a new app
Replies: 11
Views: 398

Re: Time for a new app

Sounds promising, happy to help you with beta testing the app when you are at that stage.

You can find good information about the necessary pulse shape filtering in the PRA manual, Marek might also be willing to help if you get stuck.

Steven