8 Ohm 0.25W Speaker 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter The dual BEC design allows

8 Ohm 0.25W Speaker 4 Channel (I2C or SPI) 3.3V 5V Bi Directional Logic Level Converter The dual BEC design allows The dual BEC design allows simultaneous powering of flight controllers and auxiliary systems at different voltage levels Parameter Detail Microcontroller ATmega2560 USB Host Chip MAX3421E Operating Voltage 5V Input Voltage (Recommended) 7 12V Input Voltage (Limit) 6 20V Digital I O Pins 54 (15 PWM output) Analog Input Pins 16 Flash Memory 256 KB (8 KB used by bootloader) SRAM 8 KB EEPROM 4 KB Clock Speed 16 MHz USB Host Connector USB A Female (for Android devices) Programming Connector USB B Board Color Blue Board Dimensions Approx