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makerbase-mks / MKS-Robin-E3-E3D

MKS Robin E3 E3D 32Bit Control Board 3D Printer parts with tmc2209 Uart mode driver For Creality Ender 3 CR-10
https://www.aliexpress.com/item/4000781744682.html
GNU General Public License v3.0
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How many LEDs can I connect to the neopixel port? #105

Closed piontec closed 3 years ago

piontec commented 3 years ago

Hey! I have Robin E3D 1.1 and some neopixel LEDs, but I can't find any spec that says how many LEDs can I connect to the board directly? What is the max power output of the neopixel connector?

mks-viva commented 3 years ago

Hi! MKS has reserve a 5V interface, DC-DC use MP584(Support 3A output), but has fues(limit 1.5A), so, you need limit it in 1.5A

DocYester commented 3 years ago

Calculate 50mA per LED as max current - so 30 LED's should be the maximum to be safe

piontec commented 3 years ago

Thank you for your responses. Just to make sure: 1.5A is when I'm connecting directly to the mainboard, without any external modules, voltage regulators and so on, right?

DocYester commented 3 years ago

Thank you for your responses. Just to make sure: 1.5A is when I'm connecting directly to the mainboard, without any external modules, voltage regulators and so on, right?

Yes. But you can connect the "driving Pin" to the LED-Stripe and the power source from an external as well - to get more than 30 LED's up - dont forget to connect gnd's as well.

piontec commented 3 years ago

Thank you, all clear now! It would be super helpful to add this to docs :)