Product Review

TECH SPECS
MicrocontrollerATMEGA2560-16AU
Operating Voltage5V
Input Voltage (recommended)DC7-12V
Digital I/O Pins54 (D0-D53)
PWM Digital I/O Pins15 (D2-D13; D44-D46)
Analog Input Pins16 (A0-A15)
DC Current per I/O Pin20 mA
DC Current for 3.3V Pin50 mA
Flash Memory256 KB of which 8 KB used by bootloader
SRAM8 KB
EEPROM4 KB
Clock Speed16 MHz
LED_BUILTIND13

Specialized Functions of Some Pins
Serial Communication: D0 (RX0) and D1 (TX1); Serial 1: D19 (RX1) and D18 (TX1); Serial 2: D17 (RX2) and D16 (TX2); Serial 3: D15 (RX3) and D14 (TX3).
Used to receive (RX) and transmit (TX) TTL serial data. Pins 0 and 1 are also connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.
PWM Pins (Pulse-Width Modulation): D2 to D13, and D44 to D46.
Provide 8-bit PWM output with the analogWrite() function.
External Interrupts: D2 (interrupt 0), D3 (interrupt 1), D18 (interrupt 5), D19 (interrupt 4), D20 (interrupt 3), and D21 (interrupt 2).
These pins can be configured to trigger an interrupt on a low level, a rising or falling edge, or a change in level. See the attachInterrupt() function for details.
SPI communication: D53 (SS), D52 (SCK), D51 (MOSI), D50 (MISO).
These pins support SPI communication using theSPI library.
IIC communication: D20 (SDA); D21 (SCL). Support TWI communication using the Wire library.

Details
Dimensions: 108mm x 53.5mm x 15mm
Weight: 33.6g

The package contains:
1 x KEYESTUDIO Upgraded Version mega 2560 r3
1 x USB cable