FFP0173_Aquila_Main_Board_V1.0.1

VA-GD32.md

FFP0173_Aquila_Main_Board_V1.0.1 with GD32F103

Memory

• RAM 48K @ 0x2000000
• Flash 256K

Pinouts

USART

Connected to CH340G for USB

• pin 3 (TXD) of CH340G: PA09 - connected to TX LED
• pin 2 (RXD) of CH340G: PA10

Connected to LCD connector for direct serial (can't use LCD display)

• LCD 7 PB11 - alternate direct serial
• LCD 8 PB10

LCD 10 pin

• Pin 1: 5V
• Pin 2: GND
• Pin 3: PB15 - 'A'
• Pin 4: PB12 - 'B'
• Pin 5: PB13 - 'Beep'
• Pin 6: PB14 - 'Enter'
• Pin 7: PB11 - for TX/RX (SDA) - note that STM32 i2c.c has PB10,11 for i2c2
• Pin 8: PB10 - for TX/RX (SCL)
• Pin 9: NC?
• Pin 10: NC?

BL-Touch 5 pin

• Pin 1: GND - square pad
• Pin 2: 5V
• Pin 3: PB0
• Pin 4: GND
• Pin 5: PB1

Reserved Extruder Sensor Port

• Pin 1: (square pad): 24V
• Pin 2: GND
• Pin 3: to 20K to gate of FET (NTR4503N) source to GND, drain to PA3 + 10K to GND

Filament runout detector (next to X endstop) 3 pin

• Pin 1 (square pad): 1K to PA4
• Pin 2: GND
• Pin 3: 3.3V

Endstops

• Pin 1 (square pad): GND (all)
• Pin 2 X: 1K to PA5
• Pin 2 Y: 1K to PA6
• Pin 2 Z: 1K to PA7

ADC for Thermistors

• TB Pin 1 (square pad): PC4
• TH Pin 1 (square pad): PC5
• Pin 2: both are GND

CPU LED

• PC0 - active low