RemRam

RemRam

Release status: working

Description	RemRam 32bit Board
License	CERN OHL version 1.2 [1]
Author	User:Nils Hasenbanck
Contributors
Based-on	-
Categories	electronics ;
CAD Models	-
External Link	https://github.com/hasenbanck/remram

RemRam 32bit Board für Marlin V2.0

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Features

• 32bit STM32F765VI

       216 MHz
       512 KBytes RAM
       2 MBytes flash

• 4x TMC2130 stepper driver

       stealthChop
       spreadCycle
       coolStep
       stallGuard

• 24V main power rail

       heatbed output (15A)
       heater output (5A)
       stepper driver and logic (5A)

• 5V secondary power rail (3A)

       FAN1 and FAN2

• 2x 3.3V tertiary power rail (2x 0.5A)

       MCU power (IO)
       SD card power

• Robust connectors
• Quality, high powered MOSFET
• 4 layer board with single side component placement

PCB design

Software used KiCad 5.0

Alternative Parts

You can substitute the TPS5408 with a TPS5402. In this case you also need to replace R4 with a Zero Ohm resistor.

Compiling the firmware

• Install Arduino
• Install the STM32 Core
• Optional: Update the STM32 Core using the git repository
• Download the current git branch of Marlin 2.0
• Open the Marlin project, select the "RemRam V1" board from the Marlin menue, edit the Marlin configuration file and build the project. You need to find the HEX or BIN file that Arduino creates and flash the firmware onto the board (See: "How to flash the firmware").