Due to the many numbers of pins, it is not usually used for common projects but you can find them in much more complex ones like Radon detectors, 3D printers, temperature sensing, IOT applications, real-time data monitoring applications etc. The Arduino Mega 2560 is a replacement of the old Arduino Mega, and so in general reference, it will be called without the ‘2560’ extension. It supports ICSP as well as USB microcontroller programming with PC. It is also compatible with the different type of boards like high-level signal (5V) or low-level signal (3.3V) with I/O ref pin.īrownout and watchdog help to make the system more reliable and robust.
With large FLASH memory and SRAM, this board can handle large system program with ease. Other features include JTAG support for programming, debugging and troubleshooting. It has more than 5 pins for Vcc and Gnd to connect other devices to Arduino Mega. Secondly, it has inbuilt RTC and other features like analog comparator, advanced timer, interrupt for controller wakeup mechanism to save more power and fast speed with 16 Mhz crystal clock to get 16 MIBS. First feature is the large I/O system design with inbuilt 16 analog transducers and 54 digital transducers that supports with USART and other communication modes. If you solder a jumper wire to the Target UNO ICSP pin-5 ribbon cable then you can just plug it into the pin-10 on the Host UNO header.When cheaper boards are available, why go with Arduino Mega? The main reason behind this is the additional features that are inbuilt with this board. SS (UNO-pin-10) => RST (UNO-ICSP HEADER-pin-5) (see attached ICSP header pinout)īy soldering a wire from PIN10 (SS) directly to PIN5 on the ICSP connector, the Uno can be used as the AVR-ISP programmer for any targeted AVR's.
So if you substitute an UNO for the ATtiny, you get: The only thing that puzzles me is that the pin names on the ATtiny and the UNO in the attached schematic I have two UNOs (and also two standalone ATmega328s breadboarded) but have never tried that. Isn't that the same wiring used to program (upload sketches) to an ATtiny85 ? (except the UNO to be programmed would take the place of the ATtiny and the SPI pins would connect the same way) The Uno doing the programming uses D10 to control Reset on the board being programmed.
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