Tag Archives: compute module 3

CM3-PANEL – A Panel PC based on the Raspberry Compute Module 3

Early last year, the Raspberry Pi Foundation launched the Raspberry Pi Compute Module 3, a board designed to provide firms with low-cost computer hardware to build into products. The Raspberry Pi Compute Module 3 (CM3) packs the same 1.2GHz, quad-core Broadcom BCM2837 processor and 1GB memory used on the Pi 3 onto a slimmer and smaller board. The CM3’s compact design, the same size as a DDR2 small outline dual in-line memory module, is suited to be built into electronic appliances. The Compute Module already sees some adoption in commercial applications and Acme Systems is an organization building on it with their latest release of the CM3-PANEL.

Raspberry Pi Compute Module 3 Device
Raspberry Pi Compute Module 3

The latest product to leverage Raspberry Pi CM3L SoM is made by Italy based company Acme Systems, and designed for Panel PCs and tablets. Acme Systems isn’t new to developing products based on the Raspberry Pi; they launched the Acme CM3-Home last year, a Raspberry Pi 3 Compatible Board designed for Home Automation.

CM3-Panel
CM3-Panel is a 7-inch thin touch-panel PC based on Raspberry Pi 3 industrial module deemed to be integrated on the front panel of your devices. The device comes with a socket for attaching the Raspberry Compute Module 3 and featuers a MIPI connector for the Raspberry Pi Camera. It extends out 24 GPIO lines from the Raspberry Pi where some are used for; Lcd backlight control (1 GPIO), Camera led and camera shutdown control (2 GPIO), SPI bus (5 GPIO), Hardware PWM lines (2 GPIO), Serial line (2 GPIO), PCM line (4 GPIO), and I2C bus (2 GPIO). The CM3-Panel can operate in temperature range of -20°C to +70° C and is less than 22mm thick.
The device comes in four different models, including two with modules that support Acme’s open source 868MHz Yarm RF radio module spec:
  • CM3-Panel-U — USB 2.0 port — 95 Euros ($113)
    • No WiFi module
    • USB Host port
    • No Yarm radio module
  • CM3-Panel-W — 2.4GHz WiFi — 99 Euros ($118)
    • WiFi @ 2.4GHz
    • No USB Port
    • No Yarm radio module
  • CM3-Panel-UY — USB and 868MHz Yarm ISM — 115 Euros ($137)
  • CM3-Panel-WY — 2.4GHz WiFi and 868MHz Yarm ISM– 119 Euros ($142)

Yarm is a smart and cost-effective solution for system integrators to build their own RF applications at 868 MHz avoiding all the hardware design costs requested to start a new custom RF project. Yarm integrates a low power MCU (35 µA/MHz in active mode and 200nA in sleep mode) and a high sensitivity transceiver.

The 868MHz Yarm module is compatible with Acme’s ISM 868MHz Energy Harvesting radio nodes. The module is equipped with a Cortex-M0+ based, 22 x 14mm Microchip ATA8510 ISM transceiver. The CM3-Panel has a separate array of Yarm GPIO in addition to the main Raspberry Pi GPIO. The optional RaLink RT5370N 2.4GHz WiFi module is based on USB 2.0 and is fully supported by the latest Kernel Linux versions.

CM3-Panel appears to be an open source product because ACME systems have published it’s schematic, mechanical drawing, and a 3D stem model for 3D printing. The product is available for purchase and can be bought online from the product page.

More IoT with Compute Module 3 and Ubuntu Core OS

Canonical, the company behind Ubuntu, announced recently that its IoT OS, Ubuntu Core, is available on the Raspberry Pi Compute Module 3 – the general-purpose compute product from the Raspberry Pi Foundation. This OS, the smallest Ubuntu ever, is the perfect host operating system for IoT devices and large-scale cloud container deployments. Actually, the Raspberry Pi Compute Module 3 (CM3), is a micro-version of the Raspberry Pi 3. With its new features, it provides a simple and affordable single board computer.

In fact, this module is based on the Raspberry Pi 3 hardware, providing twice the RAM and roughly 10x the CPU performance of the original Module, launched in 2014. Even though CM3 is replacing the original Compute Module, but CM1 is still compatible with the new Compute Module IO Board V3, and remains available for sale.

CM3 takes care of the complexity of routing out the pins, the high speed RAM interface and core power supply. Also, it allows a simple carrier board to provide what is necessary for external interfaces and form factor. The module uses a standard DDR2 SODIMM form factor, sockets by several manufacturers, are easily available, and are inexpensive.

Software Defined Everything?

As a vision for Canonical, The CM3 with Ubuntu Core allows developers to create new IoT products and devices. As well as offering a potentially smaller and more efficient replacement for some devices that contain larger Raspberry Pi boards.

“Gaining official support for Ubuntu Core is highly significant for our Compute Module 3. It opens up a huge community of developers keen to leverage Ubuntu’s particular advantages in the IoT world; its resource-efficient footprint, versatility, and industry leading security benefits,” says Eben Upton, CEO at Raspberry Pi.

Finally, more comprehensive information on the Compute Modules is available in the this hardware documentation, and includes a datasheet and schematics. In addition, you can check this step-by-step tutorial to install Core OS on your Compute Module 3 by Ubuntu Developer.