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Prototype
04/15/2023 at 15:02 • 0 comments -
128Mbit NOR FLASH
12/03/2022 at 15:52 • 0 commentsCHANGELOG:
@first, I sketched up a solution for a small BGA package 64Mbit NOR FLASH w. QSPI interface, and although the MCU datasheet mentions something about low_voltage pins, the 2v rating of that IC makes the interface too dodgy.
So I have settled on a larger 128Mbit (16MB) external QSPI FLASH IC rated for 3.6v.
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PIN Assignment
11/27/2022 at 18:32 • 0 commentsThe two current sense ANALOG input´s are assigned to ADC12_INP4 and ADC1_INP2, which should make it possible to use the dual ADC mode, for simultaneous samples.
That leaves ANALOG temperature (thermistor) port and ANALOG voltage_divider (BUS voltage) port on ADC3.
The HALL and ENCODER interface is on TIM3 CHA 1-3
All BLDC PWM signals are on TIM1 (Advanced Timer). Supports 4PWM stepper and 6PWM BLDC.
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UFBGA169
11/25/2022 at 03:44 • 0 comments -
VIA IN PAD
11/25/2022 at 01:47 • 0 commentsSAME51 vs. STM32H747 (7X7MM-DUAL_CORE_480Mhz)
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USB C
11/12/2022 at 23:21 • 0 commentsCHANGELOG: Migrated to USB_C. Stronger, better wire to board link.
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RENDER
11/09/2022 at 14:34 • 0 comments -
ON AXIS NEMA23 FOC DRIVER
11/09/2022 at 14:21 • 0 comments -
ANGLE-SENSOR, FOC POWERSTAGE, MCU STACK
11/09/2022 at 13:15 • 0 commentsI know it's a ugly hack, but one could use the 12v from a PSU of the machine running Klipper on a Linux install, to switch the FET´s. The FET´s are 80v rated, but the board has a 48V working voltage rating, because of TVS diode spike-protection. They would need shared GND.
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FOC echos in wires
11/08/2022 at 14:16 • 0 comments