![]() ![]() To use PD8 and PD9 with the morpho connector, I should flip these solder bridges (from ON to OFF and vice-versa). Pins PD8 and PD9 default's configuration, according to page 27 of the manual, is SB5 and SB6 ON, and SB7 and SB4 off. PD8 and PD9 are used for USART3 communication which I do not need. I have verified there is continuity with SB77 and SB77 is on by default, so the solution here would be to remove SB77. of the manual shows PD10 connected to SB77, with SB77 on by default, and flipping it to off should enable morpho connector use. I do not know the purpose of USB_OTG_FS_PWR_EN, however I believe it is related to CN13 USB, which I do not need. I have verified that PE1 connects to R71 using a multimeter, and the schematics/manual show no solder bridge to disconnect the LED, so the first one I consider solved by removing the resistor R71. So, pin PE1, according to the schematics can be disconnected by removing R71. I am following the schematics below (MB1364):Īnd the user manual for MB1364 found here: ![]() (Current use verified through STM32CubeIDE) PD10, currently USB_OTG_FS_PWR_EN, needed for FMC_D15. PD9, currently ST_LINK_TX, needed for FMC_D14. PD8, currently ST_LINK_RX, needed for FMC_D13. In order to do this I need to free up the following 4 pins, to be used by the morpho connector: PE1, currently yellow user LED, needed for FMC_NBL1. It would be great if someone would get populated boards made and offered for sale as I am currently not prepared to do that.I want to interface a Nucleo-H743ZI2 board (MB1364E) with a memory chip using STM32's FMC. I do not plan to offer populated boards as either I have to solder them myself (will be expensive) or place an order for ready made boards (with only SMD components soldered).Ī redesign is likely required for ready made boards as some of the components may not be available from the standard selection offered by e.g. 1.0c: (current version) Not yet available.These boards are gold plated (ENIG finish). These are missing a pullup resistor for the keypad strobe input - this may affect operation of the keypad plugin. These do not support Trinamic drivers in SPI/UART mode and has a couple of correctable routing errors in the spindle PWM -> spindle DC circuit. I have a number of bare boards available:ġ.0 (preliminary version): 7 pcs. ![]() If not in use some or all pins may be used as GPIO or as a generic SPI interface with one chip select line, depending on motor drivers used. Optional on-board EEPROM/FRAM for persistent storage of settings. One is input only and has 5V tolerant pins. One is unbuffered and can be used for serial communincation, eg. for the strobe signal from a I2C-based keypad. This is complemented with a 5V tolerant input pin that may be used as an interrupt source, eg. I2C port with jumper selectable drive voltage (3.3V or 5V). External supply voltage limited to rating of filtering capacitor C7 (max. Optional optocoupled DC spindle output, can be made galvanically isolated via jumper setting. If externally supplied inputs and outputs can be made galvanically isolated from the controller via jumper settings.ĥV buffered PWM output for spindle speed control. Jumper selectable drive voltage for inputs and outputs, either 5V internally supplied or 5-30V externally supplied. Outputs are open drain (ULN2003) capable of draining 500mA, enough to drive most relays directly. Opto-coupled signal outputs (Spindle on, Spindle direction, Flood, Mist, Aux0 and Aux1). Opto-coupled limit and signal inputs (X, Y, Z, A, Probe, Reset/E-Stop, Door, Feed Hold and Cycle Start). On-board sockets for Polulu (A4998 and DRV8825) or Trinamic (TMC2130 or TMC5160 - SPI mode, TMC2209 - UART mode) style motor driver modules. NOTE: design files are in KiCad 5 format!Ĥ-axis motor support with separate enable for all axes. ![]() GrblHAL driver support for Nucleo F411RE and Nucleo F446RE development boards. CNC Breakout board for Nucleo-64 based development boards using ST morpho extension header ![]()
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