shotStopper
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.
BATCH 4 UPDATE 3/18/25:
Thanks for all the interest and support! The shotStopper continues to spread across the globe and is improving thanks to the generous contributors on github and discord.
Batch 4 is current in production, which will be fully restocked in April.
Features
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
Included Parts
The programmed V3.0 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
Compatible Scales
Compatible Espresso Machines*
*The Linea Mini has a few different versions that requires different power configurations. If your machine is an older, pre-IoT version, it’s recommended to order the AC/DC power supply, which will replace the low voltage power cable included in the kit. These machines tend to struggle to provide enough DC current for the shotStopper. Please also note that the new Mini R has not been tested and is not guaranteed to be compatible.
Documentation and Support
Discord (For support, updates, and discussion)
Github (For software updates and adjustments)
Need help with your installation?
reach out to the community at the official Discord
Specs
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.
BATCH 4 UPDATE 3/18/25:
Thanks for all the interest and support! The shotStopper continues to spread across the globe and is improving thanks to the generous contributors on github and discord.
Batch 4 is current in production, which will be fully restocked in April.
Features
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
Included Parts
The programmed V3.0 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
Compatible Scales
Compatible Espresso Machines*
*The Linea Mini has a few different versions that requires different power configurations. If your machine is an older, pre-IoT version, it’s recommended to order the AC/DC power supply, which will replace the low voltage power cable included in the kit. These machines tend to struggle to provide enough DC current for the shotStopper. Please also note that the new Mini R has not been tested and is not guaranteed to be compatible.
Documentation and Support
Discord (For support, updates, and discussion)
Github (For software updates and adjustments)
Need help with your installation?
reach out to the community at the official Discord
Specs
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.
BATCH 4 UPDATE 3/18/25:
Thanks for all the interest and support! The shotStopper continues to spread across the globe and is improving thanks to the generous contributors on github and discord.
Batch 4 is current in production, which will be fully restocked in April.
Features
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
Included Parts
The programmed V3.0 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
Compatible Scales
Compatible Espresso Machines*
*The Linea Mini has a few different versions that requires different power configurations. If your machine is an older, pre-IoT version, it’s recommended to order the AC/DC power supply, which will replace the low voltage power cable included in the kit. These machines tend to struggle to provide enough DC current for the shotStopper. Please also note that the new Mini R has not been tested and is not guaranteed to be compatible.
Documentation and Support
Discord (For support, updates, and discussion)
Github (For software updates and adjustments)
Need help with your installation?
reach out to the community at the official Discord
Specs
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.