SPECIFICATIONS

• Main Board – Mega 2560 (ATmega2560, CH340G USB-UART)

  • Operating voltage: 5V; recommended input: 7–12V (limits 6–20V)

  • I/O: 54 digital pins (15 PWM), 16 analog inputs

  • Current: 40 mA per I/O pin; 3.3V pin: 50 mA

  • Memory: 256 KB flash (8 KB bootloader), 8 KB SRAM, 4 KB EEPROM

  • Clock speed: 16 MHz

• Mega 2560 Pro (Embed)

  • Compact form factor: 38 × 55 mm; functionally similar to Mega 2560

  • USB interface: CH340G (stable UART-USB; driver may be required)

  • Connection: micro-USB (common smartphone cable)

  • Power options: via micro-USB or pin headers

  • Onboard LDO regulator: 6–9V input (peak 18V); output up to ~800 mA @ 5V and ~800 mA @ 3.3V
    (note: higher input voltage reduces available output current)

• Prototype Screw/Terminal Block Shield Kit (Compatible with Mega 2560)

  • Includes: Prototype PCB, terminal blocks, female header sockets (unassembled; flexible mounting)

  • PCB: FR-4, dual-layer; size 120 × 78 mm; pad pitch 2.54 mm (0.1"); pad hole 0.8 mm; terminal block pitch 3.5 mm (0.138"), hole 1.2 mm

  • Terminal blocks: pitch 3.5 mm; total 84 pins (3-pole × 24 pcs, 2-pole × 6 pcs); wire range 26–16 AWG; strip length 5 mm; M2 steel screws; brass pin header & cage

  • Female headers: pitch 2.54 mm (0.1"), pin length 15 mm (0.59"); 10-pin ×1, 8-pin ×5, dual-row 18-pin ×1