Consider looking into the manual.
I re-did all the wiring, and checked again: VPP was 3.8V. Vmin=-0.2V, Vmax=+3.6V. This is borderline! I then soldered a wire on the tiny output-pad of the GDK101, and with some sweat on my forehead I made the connection. The ESP32 survived. Phewwww! I got some interesting data. My ESP32 is a plain ESP32-D0WD-V3 v3.0. The TASMOTA is the latest generic code (which does not support a GDK101!). All other stuff is my own Berry code, added to the Tasmota. I can now do Geiger Counter by counting pulses,...
Can't hurt. That pulse output is tiny pad! Just checked it with an osci: VPP is 4.1V! The ESP32 will not like this! It wants 3.3V, and no more than 3.6 V!!!
Can't hurt. That pulse output is tiny pad!
Look into the GeigerLog manual, chapter "Introduction to GeigerLog, Installing, Starting, and Using GeigerLog", and follow instructions.
Ok, is done. Watch for the upcoming pre-release 02 here: https://sourceforge.net/p/geigerlog/discussion/devel2/
As I said on the GQ forum: Open a command window, and start GeigerLog. Post every outcome into your ticket.
Attached a pic from running the GDK101 on my latest GeigerLog. Blue the 1min data, Magenta the 10min data, red the Temperature from an I2C sensor BME280, and black barometric pressure, all run on the very same ESP32 simultaneously. Bad news: I have loaded the GDK101 with a bag of Uranium beads to give it a bit of a workout. It is responding with µSv data. This is physical bullshit! The calibration of counters - if done at all - refers to Gamma radiation. It is undefined when it receives radiation...