It is that time again! SparkFun Electronics will be closed Friday, January 13th for our annual inventory day. Please keep in mind that any orders placed after 2PM (Mountain Time) on Thursday, January 12th will not ship or be prepared for local pickup until we open for normal operations on Monday, January 16th. In addition, tours will resume on Friday, January 20th. Thank you for your patience!


Member Since: March 26, 2011

Country: United States



Simply a hobbyist, with a couple of major caveats

Programming Languages

Mash keys until something useful happens.

  • GRRRRR. DO NOT try to remove the effing red boot and put it back on to switch between measuring/not measuring for alpha radiation.

    The boot refuses to go back on because the tube is zip tied to the board, and trying to get it there (being as absolutely cautious as possible) will likely result in breaking the Geiger counter, even though the red boot just fit on it 60 seconds ago. Also take careful note of the little extra-fragile glass tube at the back of the Geiger tube.

    Recommend a design change to account for changes between alpha radiation measurements.

  • Why does the binary output resolve to a 0 or a 1 for an equivalent event in the tube?

    What is the difference between a 1 or 0 in the data stream, if any?

    In other words, should the output be interpreted as 1 = 0 = radiation event?

  • I had to purchase the components in this retail kit as it was out of stock -
    are the instructions that come with the retail version online somewhere?

No public wish lists :(