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CM3-Home: Home Automation Carrier Board for Raspberry Pi CM3

By on December 8, 2017
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Italy-based Acme Systems, has turned to the Raspberry Pi Compute Module 3 Lite (CM3) as the foundation for its new CM3-Home home automation carrier board. Designed for OEM market and installation within a DIN-rail switchboard, the CM3-Home is available in a consumer-oriented, 130-Euro ($154) Lite model and a more advanced, 330-Euro ($392) “Full” version that targets commercial building automation.

They are both designed to plug in an RPi CM3 Lite module (no eMMC) with a quad-core, Cortex-A53 Broadcom BCM2837 SoC clocked to 1.2GHz. In addition to the 1GB of LPDDR2 RAM on the module, the CM3-Home integrates a microSD slot with a card preloaded with a Linux distribution and drivers.

The Full version supports connections such as a Light-Bus for DALI (Digital Addressable Lighting Interface) lighting devices, and a TP-Bus (Twisted-pair bus) — via a Siemens TP-UART-2 — for KNX compatible lighting and automation devices. It also offers dual ADC lines via screw terminal, and provides standard features that are optional on the Lite model. These include 2.4GHz WiFi, an IR receiver, and an SPI/GPIO based LCD interface for an optional 2.2-inch, 320 x 256 resistive touchscreen.

The Full version is additionally equipped with a Cortex-M0+ based, 22 x 14mm Microchip ATA8510 ISM transceiver module that supports Acme’s open source YARM RF radio module spec.

The CM3-Home includes a 10/100 Ethernet port, 2x USB 2.0 host ports, a stereo audio output, and a MIPI-CSI connector for a Raspberry Pi camera. There are 2x opto-isolated RS485 buses, which are commonly used to connect DMX512, Modbus or generic RS485 serial devices.

More information may be found on the Acme Systems CM3-Home product page.

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