@Skytronic84 It's hard to answer that. You might go to the wesite - sites.google.com/site/diygeigercounter/home and draw your own conclusion based on your experience.
@NativeEarthOrg I agree. This is an OLD VIDEO, and at that time the company Libelium came out with one of the first uC Geigers. They use the rate of 360 and I blindly followed - thinking they had researched this. They later changed to 175 which is closer but not justifiable. Calculating from the data sheet (Co60 22cps/mR/h) gives 132 CPM / uSv/h. So that's the story.
I have more info on it at sites.google.com/site/diygeigercounter/software
Got the kit in the mail today, soldered all the resistors and capacitors to the PCB. Hopefully I can test it tomorrow. I already have a geigercounter setup with a '328 on perfboard but this one is smaller and more efficient.
Nice touch to include some 10M resistors for building a HV probe!
Is anything in the kit itself radioactive or hazardous to your health? How do you calibrate it and is it accurate? approximately how much did the kit cost? It would be nice not having to rely on someone "supposidly telling the truth" about no harmful radiation leakage. I like verification.
There is nothing in the kit that is radioactive. I've heard there are rumors on the web that some Russian Geiger tubes were used at Chernobyl and may themselves be radioactive. You choose your own Geiger tube with this kit - a tube is not included. Your other questions are best answered on the kit's website:
I bought one of his kits it works great. Im now hunting for a enclosure for it.
sendkeys 2 months ago
How hard it was to build this?
Skytronic84 4 months ago
@Skytronic84 It's hard to answer that. You might go to the wesite - sites.google.com/site/diygeigercounter/home and draw your own conclusion based on your experience.
BroHogan 4 months ago
Hi,
you have 360CPM giving you 1uSv/h but for the SBM-20/U its 138CPM per 1uSv/h
I'd like to know how you settled for 360CPM per 1.0uSv
That would make the spec for the tube as follows
Co-60 60CPS
where as it is listed as
Co-60 22CPS with 1CPS of inherant radiation (i.e. 23CPS)
I've compared this data with the M4011 tube and a SOEKS-M1 and am pretty confident that its accurate. But I'm more than willing to be corrected.
thanks for your time
NativeEarthOrg 4 months ago
@NativeEarthOrg I agree. This is an OLD VIDEO, and at that time the company Libelium came out with one of the first uC Geigers. They use the rate of 360 and I blindly followed - thinking they had researched this. They later changed to 175 which is closer but not justifiable. Calculating from the data sheet (Co60 22cps/mR/h) gives 132 CPM / uSv/h. So that's the story.
I have more info on it at sites.google.com/site/diygeigercounter/software
John
BroHogan 4 months ago
Got the kit in the mail today, soldered all the resistors and capacitors to the PCB. Hopefully I can test it tomorrow. I already have a geigercounter setup with a '328 on perfboard but this one is smaller and more efficient.
Nice touch to include some 10M resistors for building a HV probe!
tnwnl 8 months ago
Is anything in the kit itself radioactive or hazardous to your health? How do you calibrate it and is it accurate? approximately how much did the kit cost? It would be nice not having to rely on someone "supposidly telling the truth" about no harmful radiation leakage. I like verification.
jeffsadowski 9 months ago
@jeffsadowski
There is nothing in the kit that is radioactive. I've heard there are rumors on the web that some Russian Geiger tubes were used at Chernobyl and may themselves be radioactive. You choose your own Geiger tube with this kit - a tube is not included. Your other questions are best answered on the kit's website:
sites.google.com/site/diygeigercounter/home
BroHogan 9 months ago