Roast Vision


Lightweight and handheld coffee roast level sensing device

Smallest coffee sample required.

Pre-calibrated and precise.

Immediate measurements, no warm-up process.

Secure permanent snap-fit lid design.

Silicone used for a “coffee-tight” seal.

(Currently only selling to customers in the US)

Out of stock


Simple Output Scale with Agtron Gourmet Conversion:


Connect to any standard USB port using the provided USB-C cable.

Grind your coffee to the finest setting possible.

After loading with coffee, tap down the device to settle the coffee (demonstrated in following video).

Included In Box: (Color and Appearance May Vary)

(1) Roast Vision, (1) 3 Foot USB-C 2.0 Cable, & (1) Air Dust Blower and Soft Brush

Device Guidelines and Recommendations:

15°C to 40°C Operating and Storage Temperature Range

Please note that the output scale was optimized for regular coffee beans, and that decaffeinated beans will return slightly different values as a result of their color change from the decaffeination process. As a result, we currently only recommend this device to be used with regular beans.

Please limit the device’s exposure to high temperatures and direct sunlight.

Please take care to prevent drops from significant heights onto hard surfaces.

Please use the included duster and blower for removing coffee dust, and avoid the use of cleaning sprays or other liquid cleaning agents.

For those with known allergies, please be aware that the housing is manufactured from a corn-derived PLA, and includes the use of silicone.

Please do not consume or otherwise use the coffee that was in contact with the device, as the components are not food-safe. Tested coffee should be discarded once measured.

Return, Warranty and Repair Policies

This product uses the following open source hardware devices released under Creative Commons Share-alike 4.0 International, please see the individual links for more information:

SparkFun Photodetector Breakout – MAX30101 (Qwiic)

SparkFun Thing Plus – Artemis

SparkFun Micro OLED Breakout (Qwiic)

Additional information

Weight 1 lbs