FORCE 50
REV. 2.2 2021-02-04
8-11
UNIFIRE FORCE 50 Robotic Nozzle
Installation and setup manual
TECHNICAL SPECIFICATIONS
Unifire CAN Bus Cape for Raspberry Pi
The Unifire CAN Cape adds serial networking options to your Raspberry Pi
utilizing the GPIO.
The two onboard CAN Bus ports utilize the Microchip MCP2515 CAN con-
troller, accessible per SPI interface, in combination with the Microchip
MCP2551 CAN transceiver. 120Ω termination is available by jumper or con-
trol over GPIO.
The RS232 port is controlled via the RPi’s UART using the MAX3232 line-
driver and receiver.
The I
2
C is buffered by LTC4313 and the two onboard photoMOS relays allow
for simple digital control of external equipment. The IO expander for the
I
2
C bus allows for even further expansions.
Onboard is also a DC/DC transformer allowing the CAN cape to supply the
RPi with power. PoCAN (Power over CAN) makes this possible.
The CAN cape is also equipped with six blue LED indicators.
CAN Bus Cape
Communication Hat with 2x CAN, RS232, I
2
C and relays.
Technical Overview