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.