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bigtreetech / BIGTREETECH-GTR-V1.0

BIGTREETECH GTR V1.0 motherboard is a high-performance 3D printer main control board with the core controller STM32F407IGT6, which was launched by the 3D printing team of ShenZhen BigTree Technology CO.,LTD ., aiming at solving some problems existing in the motherboard market. The BIGTREETECH GTR V1.0 is the motherboard, and the BIGTREETECH M5 V1.0 is the expansion board.
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Rpi 3B+ and GTR power issue #18

Open ghost opened 4 years ago

ghost commented 4 years ago

When i use RPi 2 then have no problem with internal power supply. Now i use RPi 3B+ then 5V/3A power is not enough (or the voltage is not enough). Now i must use external power for this RPi. 5.3V(!!!)/5A. The minimum voltage to RPi pin is 5.3V (if i set to 5.1-5.2 then always reboot or show octoprint undervoltage) kép

andysport commented 4 years ago

Hi, If I understand correctly, you want power supply the RPi3 with GPIO port, right? But I read in the raspberry support forum that RPi3 and RPi4 are not powered through the GPIO port.

ghost commented 4 years ago

Hi, If I understand correctly, you want power supply the RPi3 with GPIO port, right? But I read in the raspberry support forum that RPi3 and RPi4 are not powered through the GPIO port.

Ok, then I have two remark:

  1. older RPi (like 1 or 2) not enough hw resource to print perfect curve without lag (stuttering)
  2. if use newest (like 3 or 4) not possible to powering over GPIO pin

Then why RPI GPIO interface was made for GTR? This is the question.

GadgetAngel commented 4 years ago

Hi, If I understand correctly, you want power supply the RPi3 with GPIO port, right? But I read in the raspberry support forum that RPi3 and RPi4 are not powered through the GPIO port.

Ok, then I have two remark:

  1. older RPi (like 1 or 2) not enough hw resource to print perfect curve without lag (stuttering)
  2. if use newest (like 3 or 4) not possible to powering over GPIO pin

Then why RPI GPIO interface was made for GTR? This is the question.

the purpose it to get rid of the USB cable between the raspberry pi and the GTR USB port for Octoprint. By hooking up the raspberry pi thru the raspberry pi connector you no longer need a USB cable.

Here is the document that explains it: GTR V1.0_Connecting up a raspberry Pi to GTR board to eliminate the USB cable to Octoprint.pdf

GTR V1 0 Connecting up a raspberry pi to GTR board to eliminate the USB cable to Octoprint__Page 1 GTR V1 0 Connecting up a raspberry pi to GTR board to eliminate the USB cable to Octoprint__Page 2 GTR V1 0 Connecting up a raspberry pi to GTR board to eliminate the USB cable to Octoprint__Page 3