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en:calaos_io_controller [2015/08/21 22:46]
cleger [Software] 		en:calaos_io_controller [2015/08/21 22:47]
cleger [Bus]
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 ==== Bus ==== ==== Bus ====
  
-RS485 will be used as the principal bus to control the IOs on the board+RS485 will be used as the principal bus to control the IOs on the board. The components needed to use the bus are really cheap and the bus can withstand really long lines. 
  
 ==== Hardware ==== ==== Hardware ====
  
 The hardware is designed arround a tiny microcontroller. The hardware is designed arround a tiny microcontroller.
-The folling ICs maybe used : +The following ICs maybe used : 
  
 - STM32F0 (1,40€) - STM32F0 (1,40€)
 - ATMEGA328 (3,20€) - ATMEGA328 (3,20€)
  
-The IO are drived by a 2 GPIO exapanders connected via the I2C bus of the microcontroller+The IO are drived by a 2 GPIO expanders connected via the I2C bus of the microcontroller
  
 - PCA9505 is a gpio expander with 40 IOs - PCA9505 is a gpio expander with 40 IOs