BIGTREETECH
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Ⅰ. Brief Instruction
BIGTREETECH EBB42 CAN V1.0 is a nozzle adapter board specially designed
for the 42 extruder stepper motor, which is launched by the 3D printing team
Shenzhen Big Tree Technology Co., Ltd. It can communicate via USB port, or
CAN BUS, greatly simplifying wirings.
1.1 Features
1. With BOOT and RESET buttons reserved, users can update the firmware via
DFU mode by USB.
2. Added protection circuit on the thermistor avoids burning the main control chip
caused by leakage current from the heating rod.
3. User can select the thermistor's pull-up resistors values through jumper wire, so
as to support PT1000 (2.2K pull-up resistors), which makes it convenient for DIY.
4. Connect the USB with a jumper cap to get it power on, which effectively isolates
the main control board DC-DC from USB 5V.
5. Reserved I2C interface allows for filament broke and clogged detection, and
supports other DIY functions.
6. Added anti-flyback diodes on the heating rod and fans' ports effectively protect
the MOS tube from being burned due to reverse voltage.
7. Anti-reverse connection protection on the power interface prevents users from
burning the motherboard when mistakenly connecting the reverse power line during
DIY.
8. Onboard MAX31865 supports selecting 2-wire or 4-wire of PT100/ PT1000.
9. Supports communication via CAN or USB. The terminal resistor 120R of CAN
can be selected through the jumper cap, and it reserves CAN expansion interfaces.
10. Equipped ESD protection chip on the USB port prevents the main control board
from being broken down by the static electricity of the USB port.
11. The adaptor board is equipped with terminals, female reeds, double-way studs
and screws, which are required accessories for DIY, greatly meeting the DIY needs
of customers.
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