SPIs, UART, I2C, CAN

**Figure 8:** serial Ports

The SPIs are accessible vie one 10-PIN board near the SD-card, which can be used for small piggypack boards and 2UART, I2C and CAN can be accessed on bottom of board. They have not been used until now, so they are not tested very well.

**Figure 9:** Pinout BUS with UART, CAN and I2C as main functions

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