Mainboard
| Metric |
Value |
| CPU |
AllWinner R528-S3 |
| Memory |
128 MB Onboard |
| Storage |
8gb eMMC |
| Stepper drivers |
tmc2209 |
| Front |
Back |
 |
 |
| Credit to the Elegoo discord. |
Credit to thijskunst on the OpenCentauri Discord. |
Mainboard Pins
Z-Axis Optical Sensor (titled EXT on board)
| pin |
voltage |
| + |
24v |
| - |
GND |
| s |
3.3v when bed is zeroed, 0v when not |
Filament Runout Sensor
| pin |
voltage |
| + |
5v |
| - |
GND |
| s |
3v3 when filament is inserted, 0v when not |
Light
| pin |
Voltage |
| + |
24v when Light is enabled, 0v when not* |
| - |
GND |
* Matches the state of the light on the camera module.
Camera
The camera uses an USB 2.0 connection with a JST connector.
Bed Heating
| pin |
Voltage |
| + |
24v when bed is heating, 0 when not |
| - |
GND |
Hotend
Serial-Over-USB connection but the USB's VBus is connected to the PSU's 24v line.