This is a compatible Arduino Mega 2560 R3 board. It is the updated version, using the ATmega16U2 chip for USB communication and other functions. Cheaper versions of this board are available using the CH340 chip in stead of the ATmega16U2 used on this board..
Connectivity to the computer is provided through the common USB Type A connector.
The board can be powered by the micro USB port or a DC Barrel jack connector. An on board low voltage regulator (LDO) can reliably regulate input voltages of 6V to 12V. Recommend 7V-9V.
The output current for 5V is approximately 800mA and 180mA for 3.3V. Do note the higher the input voltage the lower the output current.
Please note these are VERY LOW cost boards from China. If you expect a premium product, this is NOT for you. These boards might have scratches on them, might not be the cleanest, and the packaging might have scratches or small tears. For example, if the board has pin headers, they are often ship to us from China all together in a bag, and the pins might be slightly bent or protrude through the bag. If this is not acceptable, please look for a more premium product. After all our costs (10% GST, over 10% eBay/PayPal fee and "Free" shipping we have to pay for), you can appreciate that there is very, very little profit margin left for us. We bring you these products at a very good price, but keep in mind it is a very low cost, cheap and nasty cheap product - exactly the same as similar price products sold by other sellers.
- Microcontroller: ATmega2560
- USB Controller: ATmega16u2
- Input Voltage (recommended): 7-12V
- Input Voltage (limits): 6-20V
- Digital I/O Pins: 54 (of which 15 provide PWM output)
- Analog Input Pins: 16
- DC Current per I/O Pin: 40 mA
- DC Current for 3.3V Pin: 50 mA
- Flash Memory: 256 KB of which 8 KB used by bootloader
- SRAM: 8 KB
- EEPROM: 4 KB
- Clock Speed: 16 MHz
- Size: 10.3 * 5.4 * 1.2cm / 4.1 * 2.1 * 0.5in
- Product weight: 35g / 1.2oz
10 x Arduino Mega R3