PandaPi Raspberry Pi Shield
Warning some parts of this solution are closed source. There is a libpi.so used which is compiled from source but only the binary is provided. It is used with Marlin firmware.
|PandaPi V1.0||PandaPi V2.0||PandaPi V2.5|
|Serial port chip||CH340G|
|stepper driver||6*(TMC2209/TMC2208/A4988)Modular, replaceable,uart for TMC2209 sensorless endstop||6*(TMC2209/TMC2208/A4988)Modular, replaceable,uart for TMC2209 sensorless endstop|
|Input||9~28V 20A max||9~28V 20A max|
|FAN||Support mixed use of 3V-24V fans|
|filament detect pin||reuse the SWD pin|
|Bed Leveling||BLtouch / support 5V~36V Inductive sensor NPN, since it have optocoupler.|
|Protection||4 autorecovery fuses and isolation components for over-current and reverse polarity protection for board,drivers,raspberry pi.|
Supported RaspberryPi | Pi 4B/3B/3B+
FAN0:hotend cooler,it will be opened if the temperature is higher than 60°C.
FAN1:model cooler, controlled by the gcode file or gcode command, M106: Set Fan Speed "M106 S255", M107: Fan Off.
FAN2:board cooler,If the driver is working, it will be opened.