Explorer 500

The Explorer 500 expansion board is a multifunctional interface board for your Raspberry B+, 2B, 3B and it has following functions:

Pin-Header to put directly on the Raspberry B+, 2B or 3B
UART interface: you can easily connect UART modules like for example RS232, RS485, USB to UART (TTL-cable)
8x I/O interface: you can easily connect with I/O controlled modules
SPI interface for SPI controlled modules
I²C interface for I²C controlled modules
LCD interface for HD44780 industrial standard LCD module
USB to UART, converter with CP2102 chipset (mini USB port)
Power LED
4x programmable LED
4x programmable buttons
Potentiometer: control of contrast for LCD displays (point 6)
RTC battery holder
32.768K quartz: RTC quartz
CP2102: onboard USB to UART chip for debugging
CP2102: Jumper for: on / off
RTC: Jumper for: on / off
User LEDs Jumper for: on / off (point 9)
User keys Jumper for: on / off (point 10)

It can be directly plugged onto the Raspberry.

Model

Explorer 500 Extension Board

Interfaces

UART, 8x I/O, SPI, I²C, HD44780 Industry-Standard-LCD

RTC

Battery-Holder, PCF8564-RTC-Chip incl. 32.789K RTC-Quartz

Jumper (On / Off)

RTC, CP2102 (USB to UART), User LEDs, User Keys

Other Features

Pin header for direct attachment to the Raspberry Pi, USB-UART converter with CP2102 chipset, Power LED, 4x programmable LED, 4x programmable Knöpfe, Potentiometer: Contrast control for LCD displays