3D printer control board based on ESP32,support 8 Driver motors.

Related tags

Miscellaneous PandaZHU
Overview

PandaZHU use ESP32 as the mcu for 3D printer motherboard. Zhu is Chinese for bamboo

it has larger memory and more powerful than normal 32bit 3D printer motherboard.

the file upload speed to sd card is also higher than it as a wifi module, it can support more motor drivers with one fast expand GPIO chip.

Items Specifications
MCU Two 32-bit MCU ,240MHz
RAM 520 KBytes SRAM
ROM 4M Bytes Flash memory
EXGPIO there are 24 more GPIOs(only as output) with a expander, the communication speed is 1.4MHz, and the actual speed of gpio output is 70kHz jitter free stepping that can drive the X/Y axis to speed 900mm/s .
WiFi 802.11 b/g/n/d/e/i/k/r (802.11n up to 150 Mbps),Bluetooth v4.2
temperature support 3 thermistors (30degree~260degree)
Bed leveling BLtouch/ support wild range voltage 5V~36V Inductive sensor NPN, since it have optocoupler.
LCD LCD128*64/PandaTouchScreen/DGUS touch screen
RJ11 for DGUS touch screen
Serial chip CH340G
Input 9~28V 20A max
heater Output 3 heaters, 15Amax for each heater (100A mosfet PSMN1R0-30YLC)
stepper driver 8 drviers(TMC2209/TMC2208/A4988),9 motor connectors(Z0_A and Z0_B are connected to the same driver)
FAN Support mixed use of 5V/24V fans,3 of them are controllabe fans
Audio play music at boot, Error/alarm music..
OS Real-time operating systems (RTOS)
App control printer, upload files with web browser ,see more

Wiki Guides

Flashing firmware

To flash firmware by directly connecting to your computer with usb line,you will need to insert the sd card to the sdcard slot on the board.before that you should install and compile firmware,see more

PinMap

Name GPIO Name GPIO
X_Endstop 4 Y_Endstop 35
Z_Endstop 21 SERVO(BLTOUCH PWM) 0
X_Step 101 X_Dir 100
Y_Step 103 Y_Dir 102
Z_Step 105 Z_Dir 104
E0_Step 107 E0_Dir 106
E1_Step 115 E1_Dir 114
E2_Step 112 E2_Dir 113
E3_Step 110 E3_Dir 111
E4_Step 121 E4_Dir 122
XYZE_ENABLE 128
Heater Bed 109 Heater_Hotend0 108
Heater_Hotend1 123
Fan0(model) 118 Fan1(model) 119
Fan2(Hotend0/E0 Auto) 120
Bed Thermistor 36 Hotend0 Thermistor 39
Hotend1 Thermistor 34
Filament Runout 22 RGB light 15
DHT11 13
LCD_BTN 32 LCD_BTN1 33
LCD_BTN2 25 LCD_RS 27
LCD_ENABLE 26 LCD_D4 14
Beeper 129
SD_MOSI 23 SD_MISO 19
SD_SCK 18 SDSS 5
SD_DETECT 2
SPEAKER 25

test video

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Comments
  • Schematics?

    Schematics?

    Hi,

    Is there any chance we could get the schematics for this? I'm considering using this in a commercial product, but that won't happen without the schematics.

    opened by aheinous 0
  • Code for GPIO Expander IC

    Code for GPIO Expander IC

    Hello I checked your board. It is really great. I wanted the code that we need to upload on IO Expander STC15W408AS IC. As the code that needs to be uploaded on ESP32 is available, but I could not the code for IO Expander IC STC15W408AS

    opened by pegasus-automation 1
  • Regarding Pin Mapping

    Regarding Pin Mapping

    Can you please tell me how the pins of ESP32 are mapped to driver outputs, heaters and fans i.e in schematic I can see them connected through STC15W408AS controller which is communicating with esp32 using RX/TX lines (probably UART). And in code pins of driver outputs like Step,DIR,Enable are labelled as 100,104,108,etc. So can you please explain me how they are connected and how will I get output on the drivers using esp32.

    image

    opened by itskskalsi 4
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