The Creality V2.2 diagram shows a specific 5-pin port labeled PROBE. However, many BL-Touch kits come with a 3-pin + 2-pin dupont cable. Connect as follows:
5-pin port (left to right on diagram):
If your diagram shows no 5-pin port, you must use the Z-endstop pins (PA6) for the sensor and a separate servo pin (PA1) from the LCD EXP3 port. This is called "Z-Hop wiring."
The Creality V2.2 board—widely mislabeled as the “4.2.2” silkscreen version—is the silent mainboard upgrade for the Ender 3 Pro, Ender 3 V2, and CR-10 series. It replaces the earlier 8‑bit boards with a 32‑bit ARM Cortex‑M3 architecture and TMC2208 (or TMC2225) stepper drivers in standalone mode. This paper provides a reverse‑engineered block diagram, pinout mapping, power distribution, and critical signal paths necessary for custom firmware (Marlin, Klipper), hardware repairs, and expansion modifications. Creality V2 2 Board Diagram
The Creality V2.2 board is based on the STM32F103 microcontroller, which provides the processing power needed for handling the demands of 3D printing. This board supports various stepper drivers, endstops, heaters, and sensors, making it versatile for a range of 3D printer configurations.
| Symptom | Likely cause | Test point / fix | |---------|--------------|------------------| | No power, no LED | Blown PTC fuse (F1) or reverse polarity diode D1 | Measure 24V at J1; check continuity across F1 | | LCD backlight on but blank | 5V missing or LCD ribbon loose | Measure 5V on EXP1 pin 1; re‑seat cable | | Steppers not moving | Enable pins low? Check 24V to drivers | Measure 24V on CN14‑CN17 pin 1; check EN pins (should be ~0V) | | Hotend won’t heat | Dead MOSFET (Q2) or no 24V | Measure voltage at CN8 while M104 S200; if 0V, replace MOSFET | | Bed won’t heat | Dead MOSFET (Q1) or thermistor short | Measure resistance across bed (≈3Ω for 24V); check MOSFET gate from MCU | | BLTouch fails to deploy | No 5V or PWM pin | Measure 5V between CN18‑2 and GND; PB5 should toggle 50Hz | | Random resets during print | 5V rail droops (buck converter overheating) | Add heatsink to MP1584; limit part fan if sharing 5V | | USB not recognized | Dead CP2102? (no – board uses native USB) | Check if PA11 (USB_DM), PA12 (USB_DP) have correct impedance; reflash bootloader |
| Feature | Specification | Diagram Accuracy | |--------|----------------|------------------| | MCU | STM32F103RET6 (or clone GD32F303) | ✅ Correctly labeled | | Drivers | TMC2208 (standalone, no UART) | ⚠️ Diagram doesn’t show missing UART | | Probe port | 5-pin (G, V, IN, G, OUT) | ✅ Correct pins, but polarity missing | | Firmware flash | MicroSD card or ST-Link via SWD | ❌ SWD pins not on diagram | | Heater outputs | MOSFET-controlled (24V) | ✅ Marked | | Fans | Part-cooling (PWM), Hotend (always-on) | ⚠️ Fan0/Fan1 swapped in some revisions | The Creality V2
Critical issue revealed by diagrams: The V2.2 board does not bring out the TMC2208’s UART pins. This means you cannot change driver current or enable stealthChop2 via software—a major downgrade for advanced users.
The diagram clearly identifies the heater cartridge terminals (HOT0) and the MOSFET location. This helped me trace a blown MOSFET in under 10 minutes.
| Pin | Signal | MCU Pin | Function | |-----|--------|---------|----------| | 1 | GND | - | Ground | | 2 | 5V | 5V rail | Power | | 3 | Servo (PWM) | PB5 | TIM3_CH2 | | 4 | Probe (Z‑min override) | PC14 | Same as Z‑endstop (must share) | | 5 | GND | - | Ground | If your diagram shows no 5-pin port, you
Crucial: The BLTouch probe pin is electrically shorted to the Z‑endstop pin on the PCB. Do not use both physical Z endstop and BLTouch simultaneously without a jumper mod.
If you own a Creality Ender 3 V2, Ender 3 Pro, or CR-6 SE, you have likely encountered the cryptic alphanumeric code "V2.2" printed on your mainboard. For the maker community, the Creality V2.2 board diagram is more than just a technical drawing—it is the Rosetta Stone for 3D printing upgrades, silent stepper drivers, firmware compilation, and wiring diagnostics.
In this deep-dive guide, we will dissect the official Creality V2.2 board schematic, explain every pinout, highlight common failure points, and show you how to use the diagram to install BL-Touch, dual Z-axis, or even klipper firmware.