2 Board Diagram - Creality V2

The Creality V2.2 Motherboard (also known as the Creality 2.2.1 or Atmega 2560 board) is a robust 8-bit control board famously used in larger-format printers like the CR-10S , Ender 5 Plus , and CR-20 Pro . Unlike the 32-bit V4 series found in the Ender 3 V2, this board is built on the Atmel AVR Atmega 2560 architecture, offering more I/O pins for dual extrusion and accessory support.   Key Technical Specifications   Processor: 8-bit Atmega 2560 (supports larger firmware like Marlin 2.0). Input Voltage: 12V / 24V DC. Stepper Drivers: Typically equipped with TMC2208 "Silent" drivers in later iterations (V2.2.1) or A4988 drivers in standard versions. Protection: Features improved thermal runaway protection and optimized circuits to reduce heating.   V2.2 Board Layout and Pinout   The board layout is designed to handle dual-motor configurations (Dual Z or Dual Extrusion).   Port Overview   Top Row: Includes motor ports for X , Y , Z , and E (Extruder), alongside the TF Card slot . Bottom Row: Houses the Micro USB port , LCD Screen ports (EXP1, EXP2, EXP3), and endstop connections for X, Y, and Z axes. Power/Thermal: Dedicated terminals for DC Power In , Hot Bed , and Nozzle Heater . It also includes a controllable fan port for part cooling. IO Expansion: Features specialized pins often used for LED strips (EZNeo) or BL-Touch sensors.   Wiring for Accessories   The V2.2 board is frequently used for BL-Touch / CR-Touch upgrades. Note that wiring can vary by cable manufacturer:

Review: Creality V2.2 Silent Board – A Critical Look at the Hardware and Its Documentation 1. Overview: What is the Creality V2.2 Board? The Creality V2.2 board is the silent mainboard found in later Ender 3 V2, Ender 3 Max, and some CR-6 SE printers. It replaced the older V4.2.2 and V4.2.7 boards, featuring TMC2208 or TMC2225 stepper drivers in standalone mode. Its main selling point is noise reduction —eliminating the high-pitched whine of A4988 drivers. However, for many users, the board diagram is just as important as the board itself. Without accurate documentation, firmware flashing, probe installation (BLTouch), or even simple fan swaps become guesswork. 2. The Board Diagram – What You Get (and Don’t Get) Official Documentation – Rating: 2/5 Creality provides a low-resolution, black-and-white PDF diagram labeled "V2.2_Silent_Mainboard.pdf". It shows:

Physical component locations (fuses, capacitors, MCU). Pin names for the EXP1, EXP2, and probe ports. Voltage labels for power inputs.

Missing or vague details:

No clear labeling of the UART or SPI pins for driver communication. No indication of which stepper driver is assigned to which axis (though X, Y, Z, E are physically marked on the board). No official schematic for electronics troubleshooting.

Community-Created Diagrams – Rating: 4.5/5 Because Creality’s own diagrams are lacking, the 3D printing community (GitHub, r/ender3, Klipper discourse) has reverse-engineered excellent resources:

Pinout tables for each microcontroller pin (STM32F103 or GD32F303). Multi-color annotated images showing DIAG pins, sensorless homing points, and alternative probe connections. Wiring guides for converting to Klipper firmware. Creality V2 2 Board Diagram

Best find: The "V2.2 Board Pinout Guide" by user dmbutyugin – includes exact GPIO numbers for custom firmware builds.

3. Hardware Breakdown (Based on Real Diagrams) | 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 | 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. 4. Practical Review: Using the Diagram for Real Tasks Task A: Installing a BLTouch – Diagram Usefulness: 3/5 The official diagram shows the 5-pin probe port but swaps the order of GND and VCC compared to standard sensors. Many users have fried their probes because the diagram lacks a clear warning. Community diagrams correct this. Task B: Flashing Custom Firmware (Marlin/Klipper) – Usefulness: 4/5 With the community pinout, you can:

Identify the correct serial port for Klipper ( PA10/PA9 ). Find the SD card’s SPI pins for bootloading. Locate the SWD pads (under the board, not in Creality’s diagram). The Creality V2

Task C: Diagnosing a Dead Heater – Usefulness: 5/5 The diagram clearly identifies the heater cartridge terminals (HOT0) and the MOSFET location. This helped me trace a blown MOSFET in under 10 minutes. 5. Pros and Cons of the V2.2 Board Diagram (Documentation) ✅ Pros

Community-driven diagrams are detailed and free. Basic physical layout is accurate. Sufficient for common mods (probe, filament sensor).