Isolated RS485 RS232 Expansion HAT For Raspberry Pi, SPI Control, Onboard Protection Circuits
Isolated RS485 RS232 HAT For Pi
Comes with development resources and manual
Features At A Glance
Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
Adopts the combination scheme of SC16IS752, SP3485 and SP3232, converts SPI to one RS485 and one RS232
Onboard resettable fuse and protection diodes, ensure the stable output of RS485 current and voltage, prevent over-current and over-voltage, improve shock resistance
Onboard TVS (Transient Voltage Suppressor), can effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
Breakout SPI control pins, for connecting with Arduino and other host control boards
Comes with development resources and manual (examples in C and Python)
Onboard TVS (Transient Voltage Suppressor) And Resettable Fuse, Can Effectively Suppress Surge Voltage And Transient Spike Voltage In The Circuit, Improve Shock Resistance
Interface Definition
What’s On Board
Raspberry Pi GPIO interface
for connecting to the Raspberry Pi Board
MCU control interface
for connecting to other host boards such as Arduino
RS485 interface
RS232 interface (DB9 male)
SC16IS752 UART chip
SP3485 RS485 Transceiver
SP3232 RS232 Transceiver
π142 Digital Isolator chip
PC817 Optocoupler Isolation
B0505LS Power Isolation Module
RT9193-33 power chip
TVS (Transient Voltage Suppressor)
Resettable Fuse
Status Indicator
PWR: Power indicator
RXD/TXD: UART transceiving indicator
RS485 120Ω terminal resistor on/off
Interrupt pin switching
Use D24 pin by default, can be changed to D16/D12/D25 pin by re-soldering the position of 0Ω resistor
Recenzije
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