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makerbase-mks / MKS-SGEN_L-V2

MKS SGEN_L V2.0 is powerful 32-bit 3D printer control board. The CPU is LPC1769 120MHZ, SGEN_L V2 hardware Integrated 4KB EEPROM, 5AXIS and dual Z interface, has 2 way FANs and Dc12/24V out interface, support TMC UART and SPI mode...
https://www.aliexpress.com/item/4001283346331.html?spm=a2g0o.store_home.slider_165457030.0
GNU General Public License v3.0
70 stars 28 forks source link

HW suggestion, no permanent pullups #42

Closed flankerzo closed 3 years ago

flankerzo commented 3 years ago

Hi, This is not and issue but pull request for future HW revision nad SGEN.

Im using PNP endstop sensors, and on board are permanent pullUp resistors that i always need to desolder (GEN L, SGEN L). It will be better if you replace resistor with diode, than you can use software pullUP and pullDown if needed, and input legs of IC will be better protected. Same can be done with servo pins, put diode from signal to+5V for preventing over voltage. Another upgrade will be 12V stabilisator for accesories, fan connectors, maybe with jumper to selected 12V from stabilisator or input voltage. I think adition cost will be in range of 0,5 usd. Many thanks, i hope some MKS design engineer will read this :)

mks-viva commented 3 years ago

Hi! Thank you very much for your feedback, we will collect more user needs