We’re no complete stranger to radiation detector builds, however [Dmytry]’s MicroGeiger prototype is one of the smallest as well as a lot of beneficial we’ve seen.
The concept behind the MicroGeiger comes from the observation that just about every contemporary smartphone can supply a little bit of power with the microphone jack. normally this is utilized for a microphone, however with the ideal circuit it can be stepped up sufficient to power a Geiger tube.
[Dmytry]’s circuit utilizes a hand-wound transformer however keeps the part count low; there’s only a few lots caps, resistors, as well as diodes in this build, making the circuit much smaller than the Geiger tube itself.
Since [Dmytry] is powering a Geiger tube with a phone, it only makes sense that he must likewise record clicks from the tube with an Android app. ideal now, the entire job is still in the prototype stage, however whatever works as well as his app can spot radiation from one of [Dmytry]’s sources.
The code as well as schematics for the MicroGeiger are offered on GitHub, with a video of the job in action below.