OLIMEX© 2017
OLIMEXINO-32U4 user's manual
LED1_E
When closed enables LED1. SMD jumper.
Default state is closed.
LED2_E
When closed enables LED2. SMD jumper.
Default state is closed.
RXLED_E
When closed enables RXLED. SMD jumper.
Default state is closed.
TXLED_E
When closed enables TXLED. SMD jumper.
Default state is closed.
R11_E, R12_E, R13_E
When these jumpers are closed they enable 4.7k Ohm pull-up resistors on each of the I2C lines
(R11_E is responsible for the resistor of SCL line, R12_E – for the SDA line, R13_E – for the
UEXT_CS). SMD jumpers.
Default state for all three is closed.
7.7 Additional hardware components
The components below are mounted on the OLIMEXINO-32U4 board but are not discussed above.
They are listed here for completeness:
General-purpose button
2 general purpose LEDs
2 LEDs showing virtual port activity
Note that connectors on the CON1, CON2, CON3, CON4 are soldered/mounted.
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