I have made a device with arduino MEGA with 50+ one wire sensors, 4-6 shift registers, SIM800l module, ethernet module, wifi module, RTC, SD card module, OLED, buttons, thermal printer, LM2596 buck converter etc.. All modules are soldered on my new board powered with external power supply through LM2596. My board with modules fits to arduino like a shield with male header pins.
I want to make this device to work for years continuously (if possible) how can I increase the lifespan?
The Mega 2560 is an update for the Arduino Mega, which it replaces. The board is a microcontroller board based on the ATmega2560-16AU . It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega is compatible with most shields designed for the Arduino Duemilanove or Diecimila.
CH340G replace the Atmega 8U2/16U2 CH340G Driver Download link, please copy the link and paste in browser: http://www.5v.ru/ch340g.htm Microcontroller:ATmega2560 Clock Speed:16 MHz EEPROM:4 KB SRAM:8 KB Flash Memory:256 KB of which 8 KB used by bootloader Operating Voltage:5V Input Voltage (recommended):7-12V Analog Input Pins:16 Digital I/O Pins:54 (of which 14 provide PWM output) DC Current for 3.3V Pin:50 mA DC Current per I/O Pin:40 mA
Package Included: 1 x ATmega2560-16AU CH340G Board