The Industrial grade -40+125C Open Source Hardware Linux board which is hardware compatible with A20-OLinuxino-LIME2 but with ST Microelectronics STM32MP1xx SOC STMP1-OLinuXino routing is complete

STMP1-OLinuXino routing is complete. It took 6 months from the idea to the finish.

Why it took so long? We had several times to re-design the schematics around the DDR memory and power supply.

Our goal was to make it pin to pin compatible with OLinuXino-LIME2 and we achieved it.

STMP1-OLinuXino has:

• Same size as LIME2
• Same GPIOs on same places
• Ethernet, USB, battery Lipo, buttons, HDMI, SD-card on same places
• same mount holes
• 1GB DDR3 memory
• Gigabit Ethernet interface
• HDMI interface
• LCD interface
• 2x USB hosts and 1x USB-OTG
• micro SD-card
• GPIOs have similar interfaces on the same positions
• LiPo battery charger and step up converter for battery operation
• CAN interface

There are few differences:

• we add Flash connector where different flash modules will be attached: NAND Flash, SPI Flash, eMMC Flash, so instead to keep many different versions of the board with different Flash options like LIME2 this will be done with exchangeable modules
• we put the STM32MP1 SOC on bottom where adding heatsink do not interference with the top GPIO connectors and add-on boards

The STM32MP1 devices work at -20/40+125C operating temperature by default which makes them perfect for industrial applications.

There will be different versions with STM32MP151/153/157 as they share same BGA package, also there will be some versions with commercial temperature grade components for lower cost.  Our preliminary estimations are the prices to be between EUR 35 and 70 depend on the different configurations.