Briefly introduced: Olimexino-32U4

The Olimexino-32U4 is an Arduino Leonardo like development board with an Atmel ATmega32U4 processor, that also takes over the USB communication. The manufacturer is the company OLIMEX Ltd. from Bulgaria.

Olimexino-32u4

The Board is well suited for applications without an external power supply, as it has a LiPo battery terminal with automatic charging function. This means that if an external power supply and a battery is connected – the circuit is running while the battery is charging – then later simply disconnect the external power supply and the board will continue to operate seamlessly with the accumulator.

Olimex has the Olimexino-32U4, as almost all development boards from the same company, equipped with a UEXT connector, which combines all of the communication channels, such as I²C, SPI, and the serial port on one plug. A practical matter, which, however, has a drawback, since some Arduino shields, such as the Network Shield, unfortunately, do not fit without modification.

Specifications:

ATMEL ATmega32U4 processor with 32KB Flash, 2.5 KB of SRAM, 1KB EEPROM, clocked at 16MHz
12 analog inputs (6 on the digital pins)
20 digital inputs or outputs, 7 with PWM support
Mini-USB port, fully supported by the ATmega32U4
the board can simulate a mouse or keyboard via the USB port through the HID protocol
I2C support
LiPo battery terminal with automatic charging with external power supply
Power supply 7-12V DC
programmable with the Arduino software