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The picture below shows the reset button on the SRMS board. Pressing this button will cause the CPU on the SRMS board to reset all peripherals and start booting the Linux Operating System. The two pin header connector marked JP10 may be used for mounting an external reset button on your enclosure. Use any Normally Open Momentary Contact Switch for this purpose.
SRMS has a standard I2C bus (JP1). The I2C bus can accomodate up to seven devices. Two of the seven address spaces are used up with onboard LM75 temperature sensor and a 24LC256 eeprom chip. This leaves five addresses open for use with I2C enabled devices (LCD displays, external temperature sensors etc).
