Raspberry DS1307 RTC, MCP23017 gpio, HD44780 LCD, SPI expansion board

2012.10.06


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origin page: http://www.utelectronics.com/news/view/1/retrospective
modify: 44780 LCD connector
standard gpio connector & LEDs
MCP23017 output LEDs
low level serial port connector
spi connector

ds1307: http://hqelektronik.hu/
mcp23017: http://www.chipcad.hu/








Battery on upper side
Battery upper side

or battery on lower side
Battery lower side