A new development board which enables brew-by-weight on your espresso machine, without the need for any screens or dials to distract from the original design of your espresso machine. Installation takes as little as 15 minutes and is easily reversable.
Each shotStopper is hand-assembled and tested in the USA.
Thanksgiving 2025 Update: Orders will be on pause and will not be fulfilled until the week of December 1.
Automatically tares when the shot begins
Automatically starts and stops the timer on the scale
USB-C for updates, serial-out, and (optional) power
RGB connection status indicator
Bluetooth control for changing goal weight
The programmed V3.1 circuit board, with custom hardware and software for your specific espresso machine
A plastic half-case with double-sided tape to install in your espresso machine
High-temperature silicone cabling, custom made for your installation
*note that while the Acaia Lunar 2021 is technically compatible, recently reported connectivity issues suggest that it is currently not recommended.
reach out to the community at the official Discord
Dimensions: 56mm x 46mm x 21.2mm (without cables)
Microcontroller: ESP32 S3 WROOM 1 N4
Wireless: Bluetooth 4.2 (BLE)
Firmware Environment: Arduino (with ESP-IDF)
Power: 5V at 100mA
Indicators: RGB Status LED
Connector: USB-C
App: shotStopper Companion for Android or iOS
This board requires disassembling your machine, which puts you at risk of voiding any warranty of your machine. By purchasing, you are acknowledging you are taking full responsibility of any damage that may occur.
Please note that international buyers may be required to pay landing fees, such as duties, import taxes, customs costs.
This product is produced and sold under Happy Brewing Tech LLC.
A new development board which enables brew-by-weight on your espresso machine, without the need for any screens or dials to distract from the original design of your espresso machine. Installation takes as little as 15 minutes and is easily reversable.
Each shotStopper is hand-assembled and tested in the USA.
Thanksgiving 2025 Update: Orders will be on pause and will not be fulfilled until the week of December 1.
Automatically tares when the shot begins
Automatically starts and stops the timer on the scale
USB-C for updates, serial-out, and (optional) power
RGB connection status indicator
Bluetooth control for changing goal weight
The programmed V3.1 circuit board, with custom hardware and software for your specific espresso machine
A plastic half-case with double-sided tape to install in your espresso machine
High-temperature silicone cabling, custom made for your installation
*note that while the Acaia Lunar 2021 is technically compatible, recently reported connectivity issues suggest that it is currently not recommended.
reach out to the community at the official Discord
Dimensions: 56mm x 46mm x 21.2mm (without cables)
Microcontroller: ESP32 S3 WROOM 1 N4
Wireless: Bluetooth 4.2 (BLE)
Firmware Environment: Arduino (with ESP-IDF)
Power: 5V at 100mA
Indicators: RGB Status LED
Connector: USB-C
App: shotStopper Companion for Android or iOS
This board requires disassembling your machine, which puts you at risk of voiding any warranty of your machine. By purchasing, you are acknowledging you are taking full responsibility of any damage that may occur.
Please note that international buyers may be required to pay landing fees, such as duties, import taxes, customs costs.
This product is produced and sold under Happy Brewing Tech LLC.
