treedix 2pcs atmega328p ch340 development board compatible with arduino uno r3 board kit for starter treedix <b>specifications:</b><br> 1. increase the extra pin socket, to facilitate the use of dupont line<br> 2. microcontroller: atmega328 microcontroller<br> 3. operating voltage: 5v<br> 4. input voltage (recommended): 7-12v<br> 5. input voltage (limits): 6-20v<br> 6. digital io pins: 4 (of which 6 provide pwm output)<br> 7. analog input pins: 6<br> 8. dc current per io pin: 40ma<br> 9. dc current for 3.3v pin: 50ma<br> 10.support isp download function<br> 11. flash memory: 32 kb (atmega328) of which 0.5 kb used by bootloader<br> 12. sram: 2 kb<br> 13. eeprom: 1 kb<br> 14. clock speed: 16 mhz<br> 15.usb chip: ch340g<br> 16.cable length:1ft(30cm)<br> 18.operating system compatibility (tested by vetco, using the ch340 driver):<br> windows xp sp2, sp3<br> windows 7 (any version)<br> windows 8 and 8.1<br> windows 10 (may not be using the ch340 driver)<br> mac osx 10.7.5 up to osx 10.14.2 (you can try to install the ch341ser usb driver)<br> linux<br> <b>note: if you install the ch340 driver, please contact us if you need the ch340 driver. or you can also find the drivers yourself, please search for "ch340 drivers"</b><br> <br> <b>package included:</b><br> 2pcs x atmega328p ch340g development board<br> 2 x pin header<br> this micro-controller is just compatible with arduino uno, it is not the official arduino branded board, and is supported by treedix electronics directly for warranty purposes.<br>