Arduino Nano-format board with ATMEGA644P or ATMEGA1284P MCUDesigned by obdev in United Kingdom
Arduino makers: Running out of IO pins ? Need more memory for your latest project ? Hardware This board is targeted at makers with some experience who need an AVR Arduino-compatible board for large...Read More…
Arduino makers: Running out of IO pins ? Need more memory for your latest project ?
This board is targeted at makers with some experience who need an AVR Arduino-compatible board for larger or more complex projects. Ideal for both breadboard development and deployment in small spaces.
Available in a tiny 60x30mm form-factor with either the ATMEGA644 or 1284 microcontroller, these boards break out all 32 IO pins as well as power, a reset button and two LEDs. Dual voltage regulators mean you can run the MCU at 5V or 3.3V, and provide power to external modules and components. The two rows of pins are 1 inch (25.4mm) apart making it easy to use on a breadboard.
This board has an onboard USB/serial bridge chip (CP2102) and a micro USB connector. See my Pro Mini-sized board for something even smaller.
Compared to the ATMEGA328P microcontroller in the Uno, Nano and Mini, the 644 offers 64KB Flash and 4KB SRAM, while the 1284 has 128KB Flash and 16KB SRAM. Both have a full four IO ports of eight pins each, two UARTS and three hardware interrupts, as well as the usual I2C and SPI controllers.
The board is supported by the awesome MightyCore by MCUdude (see Github link below). Just add one line of text to your Arduino preferences dialog and you're ready to go: it works just like any other Arduino or clone board. (For an Uno-sized dev board, check out MCUdude's store here on Tindie).
Boards are supplied fully-assembled and tested by me, with the Optiboot bootloader and blink sketch already installed.
The base price covers the 644 MCU but you can swap this for the 1284 for a small extra charge. The default crystal frequency is 16MHz with an option for 20MHz, 12MHz or 8MHz. The MCUs will also run without a crystal using the internal oscillator at 8MHz or 1MHz. This might be useful if you want to use a lower supply voltage.
You can order your board with soldered headers. There is an additional charge to cover the increased postage. Thicker package = higher postage. Please contact me if you have specific requirements.
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Donald | June 29, 2019
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