| Label on Board | What it connects to | Pin details / voltage | Notes | |----------------|----------------------|------------------------|--------| | | Stepper motors | 4 pins (2A, 2B per coil) | 1.5A max current per driver | | X-LIM, Y-LIM, Z-LIM | Mechanical endstops (3 pins) | SIG, GND, VCC (5V) | Normally open switches. Z-stop is also used for BLTouch sensor pin | | HE0 | Hotend heater cartridge | 2 pins (24V) | Heats up to ~260°C max safely | | HE1 | Second extruder / unused | 2 pins (24V) | Optional for dual extrusion | | BED | Heated bed | 2 pins (24V) | High current – check terminal block tightness | | TH0 | Hotend thermistor | 2 pins (analog input) | Measures temperature (NTC 100K) | | TB | Heated bed thermistor | 2 pins | Usually glass bead type | | TH1 | Optional second thermistor | 2 pins | For chamber or second hotend | | FAN0 | Part cooling fan | 2 pins (24V) | PWM controllable (G-code M106) | | FAN1 | Hotend heatsink fan | 2 pins (24V) | Always on when printer is active | | FAN2 | Mainboard/controller fan | 2 pins (24V) | Often tied to FAN0 or always on depending on firmware | | 5V, GND | Raspberry Pi / accessory port | 2 pins (5V, GND) | Low power only (do not draw more than 500mA) | | TXD, RXD, GND | UART for display | 3 pins | Connects to DWIN LCD | | RST | Reset button | – | Resets the MCU (STM32F103) | | BURN | Firmware flashing jumper | 2 pins | Short to update firmware via SD card |
The V2.2 board often has two Z-axis connectors, wired in parallel. Ensure both motors are plugged in securely.
While the V2.2 board is a reliable workhorse, its 8-bit architecture and noisy A4988 stepper drivers make it outdated by modern standards. If you are looking to modify your printer, here are your best paths forward. Installing a BLTouch / CR Touch ABL Sensor Creality V2 2 Board Diagram
Best find: The "V2.2 Board Pinout Guide" by user dmbutyugin – includes exact GPIO numbers for custom firmware builds.
The black and white wires from the BLTouch replace the traditional mechanical Z-Stop switch wire. Upgrading to a 32-Bit Silent Board | Label on Board | What it connects
looking for pin layout of Cr touch and creality v2.2.1 board
If your screen reads a constant fixed extreme temperature (like -14°C or 300°C), check the TH1 and TB1 ports. A loose thermistor wire or a short circuit on the heater block is usually the culprit. If you need help with a specific modification, tell me: While the V2
: Built on an 8-bit Atmega2560 processor, distinct from the newer 32-bit V4 series boards.
The Creality mainboard lineup can be confusing. Here's how these boards evolved:
Two separate parallel ports for dual Z-axis lead screw motors (ideal for keeping heavy X-gantry setups level). E: Controls the extruder motor. 3. Endstops and Sensors (3-Pin and 2-Pin Connectors) X-Stop, Y-Stop, Z-Stop: 2-pin limit switch connectors.
These heavy-duty screw terminals manage power routing and require solid mechanical connections to avoid thermal failures.