EspressiScale V2
Print Profile(1)
Bill of Materials
- Anti-slip pad x 1: https://tinyurl.com/4dmr2cc4
- USB-C board x 1: https://tinyurl.com/3dwdtwws
- HX711 x 1: https://tinyurl.com/39daza8u
- Load cell x 1: https://tinyurl.com/yh2wmn53
- 603048 Lithium battery x 1: https://tinyurl.com/2dwtmtyz
- Lilygo T-Touch Bar AMOLED x 1: https://lilygo.cc/products/t-touch-bar?variant=42880705102005
Description
High quality, small, and minimalist coffee scales are too expensive, so I designed my own.
Dont use too much force when installing the display, the cables are fragile!
EspressiScale V2!
An espresso scale accurate to 0.1g.
Built on an ESP32 platform. The scale features a 500g load cell and an HX711 for weight measurement, displayed on an OLED screen. It also includes a timer to track your espresso shots, flow-rate and battery indication.
OTA is supported, and additional features will be added upon request.
A soldering iron is needed.
Print Profile
- Minimal supports (Not vital)
- Optimized for part and screw fitment
Filaments
- PLA: For its great stiffness (important for measurement precision)
Instructions
NOTES
- HX711 Sensor:
The HX711 sensor is intentionally not completely fastened. I use it as a cable guide to keep the cables in place, which also helps protect the sensor from vibrations since it is somewhat sensitive. Now with USB-C:
Board listed in the BOM. Glued or double sided taped to the enclosure. Soldering this board together with the lilygo provided battery leads and the battery itself enables charging via USB-C.
New anti-slip mat!
Included in the BOM is a link to a 3M silicone non-slip mat. Ive found this to be perfect for this use case as its a the perfect combination of grip and vibration damping!
Small fix
Previously there was a drift issue. This was caused by the load cell wires themselves. To fix this, it now use screws mounted from the top instead of the bottom. This is visible in the model files and from top view.
Note: The screws are a tight fit and as long as you use the correct screws it should still be splash resistant.
License
You may create derivative works based on this object, provided that all such derivative works are published exclusively on the MakerWorld platform and include proper attribution to the original creator. You may not share, upload, host, distribute, or publish this object—or any derivative work of this object—on any other digital platform, marketplace, or distribution channel. Commercial use of this object and any derivative works is strictly prohibited. This includes, but is not limited to, selling, renting, sublicensing, or using the object in any context in which you receive monetary compensation or other financial benefits.
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