Product Description
Isolated RS485 RS232 Expansion Board
Overview
The power management control board of the raspberry pi can control the startup and shutdown of the raspberry pi (software shutdown), timing startup and shutdown, detect the working state of the raspberry pi, measure the working current, and measure the voltage of the external lithium battery.
Features
- On-board MCU(ATmega328P) supports Arduino programming
- On-board RTC clock chip (PCF8523) can provide accurate time control
- On-board CP2102 chip can realize one-click download of Arduino, and at the same time support viewing serial port data
- On-board custom button can be used as power button to realize the startup of raspberry pie, shutdown of software and forced shutdown
- Provide power supply anti-reverse connection, discharge and reverse flow mechanism to fully ensure the safety of the circuit
- It can be powered by USB interface (5V), external lithium battery (2S~4S, 7.4V~14.8V) or external DC (7.0~28V)
- Supporting batteries and battery boxes can provide 2S, 7.4V power supply, and the capacity can reach 2200 * 2mAh
- It can detect the voltage of the external battery and the working current, and can be programmed to cut off the power immediately to ensure the working life of the lithium battery
- Provide complete supporting information manuals and rich Arduino routines for power management and control
Parameter
- Communication interface: UART, GPIO (custom protocol)
- Master chip: ATmega328P-AU
- Communication interface: UART+GPIO
- Communication baud rate: 115200bps by default (other baud rates can be programmed)
- Power supply mode: USB interface or PH2.0 interface
- USB interface voltage: 5V
- PH2.0 Interface voltage: DC 7~28V (regulated power supply or lithium battery)
- Built-in circuit: anti-reverse connection of power supply, anti-reverse current, current detection and voltage detection.
- Product size: 56.5mm x 65mm
- Diameter of fixing hole: 3.0mm
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Raspberry Pi
Isolated RS485 RS232 Expansion Board
Product ID: LP508
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