Tonino Details

Basic Operation

Sample Preparation

put fine ground coffee into an espresso basket
tamp hard

Scanning

lift Tonino and put it on top of the coffee sample
read the roast degree from the display

By tamping instead of just leveling the coffee the results are less influenced by the grind.

Features

small sample size
gesture-driven
wireless operation and charging
target mode
user-defined scales
environmentally friendly
open-source Tonino app
(Mac/Windows/Linux)

Raise to Wake

Scanning

Target Mode

1	scale name
2	color reading
3	target value
4	difference
5	roast name
6	previous reading

a	darker
b	hit
c	lighter

Calibrating

Charging

Tonino Scale

Tonino	Agtron^*	SCA
125 — 130	80 — 90	Very Light
115 — 125	70 — 80	Light
100 — 115	60 — 70	Medium Light
85 — 100	50 — 60	Medium
75 — 85	40 — 50	Medium Dark
60 — 75	30 — 40	Dark
50 — 60	20 — 30	Extremly Dark
105	63	Cupping

* Note that the Agtron values listed above are the result of a cubic approximation (R² = 0.999) of 13 samples at (PSD 300-500 µm and 800-1200 µm), each with 2 x 4 replicates resulting in a total >1000 readings taken with 4 Toninos and a reference device reporting readings on the Agtron Gourmet scale. Take them with a grain of salt! (Understanding Roast Color)

Technical Data

Sensor: True Color 64-channel photo detector
Measurement principle: Polychromatic reflection
Illumination source: 4 full-spectrum white LEDs
Observed surface area: 5.3cm²
Sample size: ca. 7-14g fine ground coffee (300-500µm)
Display: OLED color display, 0.96"
Default range: Tonino 50-130 (Agtron^* 20-90)
Preheat Time: 0sec
Time per measurement: 2sec
Measuring precision: ±2 scale divisions
Data interface: RS232 serial via USB
Power supply: Micro USB
Battery capacity: 270mA (12h of operation; charged in 4h)
Power consumption: 0.25-18mA (0.000925-0.066W)
Dimensions: 4.7cm x 3.8cm x 4.3cm
Weight: 50g
Included accessories: Calibration and charging base; Short micro USB cable

Waste disposal/Environmental protection

According to the EU directive 2012/19/EU "Waste Electrical and Electronic Equipment (WEEE)", this device must not be disposed as unsorted municipal waste. Instead it must be collected separately: Return