Pomelo Zest offers WiFi connectivity thanks to the ESP32-C6 at its core. It can either connect to an existing network or run in access point mode to allow a phone or a laptop to connect to it for accessing the web user interface.

An overview of this functionality is in the following clip, with some more detail below.

To make connection as easy as possible it can display the WiFi credentials (when in AP mode) and web UI link as QR codes ready to be scanned by a phone

Web interface as presented on a laptop and a phone

The web user interface is pretty basic, having run information and controls as well as a spectrum view implemented using the very tiny and awesome uPlot library. This allows having all assets locally, as you might not be online when connected to Pomelo.

We gamma spectroscopy nerds really care about poking at the gamma spectra looking for peaks and making sure the energy resolution of our instrument is as advertised. A lot of excellent software has been written for this and one of my favourites is InterSpec. Pomelo offers a minimal N42 file as a download with the current spectrum and its calibration coefficients, such that it can immediately be loaded into InterSpec.

InterSpec showing gamma spectrum loaded up from Pomelo