From the web page, "In addition to alpha, beta, and gamma particles, the new "Improved Radiation Meter" encountered lot of success." I wonder what jumble of...
I bought the original article a while ago. It used a BPW-34 photodiode as the detector. Reverse biased to 9V with a simple two transistor DC coupled amplifier....
i bought both articles some tme ago, build the first version with a bit variing parts, which does not satisfied me at all.... Then Mr Kainka published the new...
I ordered one too. I assume this device will have less dead time compared to a Geiger counter. You wrote: "I archived about 0.3 - 0.5 Counts per Minute with...
you won't regret it :) I made the background measurement for an average of 5 Minutes. The MCU calculates the the Average at all, if you want an average of 5...
Hi It is not clear to me how this averaging is being done. I downloaded the firmware files and I found no source code. No, I suppose it is better to have the...
Hi well i see that thingy more as a kind of educational toy ;) as if you check the dropboxfolder from my first post, you wont see much common to a regular...
... https://www.dropbox.com/gallery/35808268/2/radiation_stuff/elektor_bpw34_scaler?h=ac1dd4 the Galery contains: #the PCB and the Parts on, plus additional...
I got mine now. I got some intelligible characters once the screen but now it is blank. I drive it with 6.2 Volts. David David Jonsson, Sweden, phone...
you need at least 8-12 Volts to run it without issues ;) the Voltage regulator saves the µcu, but the sensor get fed directly so be careful and remove the...
Hello, I just received this kit yesterday and assembled the majority of it in about an hour and a half. Pretty easy to do following the article and schematic....
You may have to shield from external electronic noise. Also, many black plastics are not opaque through the range of the photodiode. Near IR gets through and...
Ok, so should I wrap the board mounted diode with foil and black tape, then can I put the whole thing in a project box, along with the other board, and have...
David, you need a strong shield for EMF. Plastic is not good for shielding ... From: David Kasai To: GeigerCounterEnthusiasts@yahoogroups.com Sent: Saturday,...
Hi David, well as Happy already Explained, the Plastic should be at least metallized... i used a Tin Box pretty much smaller than the Guys in the Webinar did. ...
happy, your pictures are only in your sent e-mail but not visible online in the group ... BTW nice unit *__* , is it yours, what kind of circuit did you use? ?...
kewl stuff, direct bookmarked the page. Al, the diode looks from size also like a BPW 34 but with long legs the author doesn't wrote what kind of diode he...