Spark Logic

WeAct BluePill+ GD32 V1.1 connection guide

WeAct BluePill+ GD32 V1.1 WeAct BluePill+ GD32 V1.1 wiring guide with power, signal assignments, and bench checks.

WeAct BluePill+ GD32 V1.1

44 contacts Current package

WeAct Studio · GD32F103CBT6 · 128 KiB flash · 20 KiB SRAM · USB Type-C

Power through USB Type-C

Required

Use a 5 V USB cable to power the board. Leave external VCC and 3V3 supplies disconnected.

  • USB power
    • 5 V USB source
    • J1 VBUS
  • Supply return
  • Regulated supply check

Bench checks

  • Measure the 3.3 V rail after power-up and check the board power indicator.

WeAct Studio BluePill+ V1.1 schematic, 6 June 2022 · USB and regulator blocks

Connection scenarios

Connect a 3.3 V serial adapter

Set the firmware to use the default USART1 assignment and power the board from USB. Cross TX and RX and connect ground. Keep the adapter power lead disconnected.

Board TX connects to adapter RX, board RX connects to adapter TX, and both share ground.UART adapterTarget boardRXP2-6TXP2-7GNDP2-19

Bench checks

  • Check the firmware serial-port mode and baud rate. Run a known serial message and verify its frame timing.
  • If no bytes arrive, verify the logic level and ground connection before changing firmware settings.

WeAct Studio BluePill+ V1.1 schematic, 6 June 2022

WeAct BluePill+ GD32 V1.1 wiring map

Highlighted contacts are used in the required step or selected circuit. Select a contact to inspect it.

P1 side header
Pin order follows the WeAct schematic and PCB index.
P2 side header
Pin order follows the WeAct schematic and PCB index.
P3 SWD header
Pin 1 is 3.3 V. Pin 4 is ground.
Selected pin details

P2-6 · PA9

Bidirectional · GPIO

Default USART1 transmit assignment.

WeAct Studio BluePill+ V1.1 schematic, 6 June 2022

Electrical limits · Pin in the reference

Models and documents

Covers P1, P2 and P3 on the WeAct Studio V1.1 PCB populated with GD32F103CBT6. Match the WeAct board marking and the header pin-1 index before wiring.

WeAct BluePill+ GD32 V1.1
GD32F103CBT6 · 128 KiB flash · 20 KiB SRAM · USB Type-C