Complete working unit
Yes, this one is finished.
Ik usually do not sell finished detectors but need some funds, and do not need this one.
This one has a prototype PCB with some SMD parts. I did not develop this version further. It is al Teensy3.6 version so similar to the others around and does accept the same software.
The main benefit is the external microphone jackplug. Placing an external microphone switches off the internal microphone.
It does not come with charger (std micro USB) also no headphones and no micro SD (SDHC class 10, 32GB or less) memorycard.