############################ EMS bus HAT for Raspberry Pi ############################ ************ Introduction ************ Use the menu on the left for all the details. The EMS HAT for Raspberry Pi is a HAT-style module for the Raspberry Pi that provides a complete EMS interface compatible with all EMS versions like EMS, EMS+ and Heatronic 3. .. Note:: This product has been discontinued in 2022. If you want to connect the UART of the Pi to the EMS bus directly, you can use an 'EMS interface board' which are available in the webshop. .. image:: ../images/hardware/ems-pi-hat-on-pi-top-view.jpg :width: 450 :alt: EMS HAT for Raspberry Pi Device compatibility ==================== The EMS bus HAT for Raspberry Pi is a complete add on board for every Raspberry Pi with a 40-pin header. These include the following Raspberry Pi models: - Raspberry Pi A+ - Raspberry Pi B+ - Raspberry Pi Zero - Raspberry Pi 2 - Raspberry Pi 3 - Raspberry Pi 4