There's a new and very nifty Tonino device to measure the roast color of your cofee. It is small enough to fit inside a standard portafilter basket and it works wirelessly using its internbal battery that also charges wirelessly when the device sits on its base station. TinyTonino can be loaded with its own Tonino scale, the Agtron scale and others. See also: my-tonino.com
Music: youtube.com/watch?v=xEYbkyolu54
Quickstart guide:
https://github.com/myTonino/Tonino-App/blob/master/src/doc/QuickStart/QuickStart.md
Using the app on my laptop, I told the Tonino I aim for #95 as my roast color. Testing this on a spot of my wooden desk, Tonino reports that if it were coffee, it would be "heavy" and 42 points below target at Tonino #53 ;-)
