detect rust
#Rust is an iron oxide, usually red oxide formed by the redox reaction of iron and oxygen in the presence of water or air #moisture. Several forms of rust are distinguishable both visually and by spectroscopy, and form under different circumstances. #Rust consists of hydrated iron(III) oxides Fe2O
#I2C is a serial protocol for two-wire interface to connect low-speed devices like microcontrollers, EEPROMs, A/D and D/A #converters, I/O interfaces and other similar peripherals in embedded systems. It was invented by Philips and now it is used by #almost all major IC manufacturers. #I2C Info – I2C Bus, Interface and Protocol #i2c.info/
#2/11/17 Nondestructive evaluation (NDE)
the ultimate way to do this detection is nondestructively. we want to check for rust without penetrating thru
the metal (which can ultimately start the erosion process)
#SPI
Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small #peripherals such as shift registers, sensors, and SD cards. It uses separate clock and data lines, along with a select line to #choose the device you wish to talk to.
#https://learn.sparkfun.com/tutorials/raspberry-pi-spi-and-i2c-tutorial