MISC Expander Shield for Raspberry Pi

Description

The board includes follwoing functions

• 0.96” SPI connected OLED interface.
• DS3231 RTC I2C real time clock, also on board battery socket.
• PCF8591 analog input and output expander,  lead out following extra pins:
  • AOUT – also have on board programmable LED
  • AIN0
  • AIN1 – connect to analog sensor socket, with pull up resistor, via jumper. Default include lightcell sensor
  • AIN2
  • AIN3 – connected to on board trim-pot potentiometer, via jumper.
  • GND
• PCF8574 GPIO expander, lead out following extra GPIOs, with break out pin header
  • L0 – joystick left – via SMD jumper
  • L1 – joystick down – via SMD jumper
  • L2 – joystick right – via SMD jumper
  • L3 – joystick up – via SMD jumper
  • L4 – on board LEDs
  • L5
  • L6
  • L7 – buzzer – via SMD jumper
• Raspberry pin IO26 / P25 controlled LED.
• Infrared receiver via IO18 / P1 raspberry pi, support LIRC software
• Reserved DS18B20 temperature sensor socket, at IO4/ P7.
• On board power LED.

Schematic please see on this page, demo code please find here (misc).

Additional information