Meritech manufactures automated handwashing stations used in food processing, healthcare and industrial environments. The CleanTech Evo is their flagship unit — a fully automated station that washes and sanitises hands in 12 seconds without any manual contact.
The work#
Full embedded Linux stack delivered from BSP to application layer:
- Yocto BSP — custom Yocto build tailored to the target hardware, including layer configuration, recipe development and image generation
- EEPROM programming — factory provisioning of device identity and configuration data for soap dispenser modules
- OTA firmware updates — robust over-the-air update pipeline using SWUpdate and U-Boot, with rollback support to ensure devices in the field can always recover from a failed update
- AWS integration — device connectivity and telemetry reporting to AWS IoT, enabling remote monitoring and fleet management
- GUI — embedded graphical user interface for the station’s touchscreen, guiding users through the wash cycle and displaying status
- Hardware control — stepper motor control for the mechanical components of the wash and sanitise cycle