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Andriy Malyshenko has designed a compact, breadboard-friendly Arduino Nano-inspired development board powered by a Microchip ATtiny1616 microcontroller — and offering compatibility with both the Arduino IDE and PlatformIO. Semiconductor Parts

Andriy Malyshenko's Arduino Nano-Inspired Dev Board Packs a Microchip ATtiny1616 - Hackster.io

"I'm a big fan of early ATtiny series chips, I even made my own ATtiny Flasher tool for productive development and few educational kits based on ubiquitous ATtiny85," Malyshenko explains of the board's origins. "Time has come to extend my horizons and look into [the] modern line of ATtiny chips, specifically so called 1-series and 2-series line of MCUs [Microcontroller Units]. This gave me an idea to make Arduino Nano pin compatible development board, so I can start using it the projects, where I'd normally pick Arduino Nano."

The resulting development board is built around the Microchip ATtiny1616, offering a single eight-bit core running at up to 20MHz officially and up to 32MHz based on community reports plus 2kB of static RAM (SRAM), 16kB of flash memory, and 128B of EEPROM. Elsewhere on the board is a USB-UART bridge for serial monitoring and power, a single RGB LED, and a push-button input.

The presence of a USB port, however, doesn't mean that the board offers a one-click programming experience: the new ATtiny1616 is programmed using UPDI, via a dedicated header — and requires, Malyshenko notes, either an Arduino Nano programmed to act as as a UPDI flasher or a "hardware modified serial programmer" compatible with the SerialUPDI toolchain.

On the software front, the board can be programmed from the Arduino IDE — 1.8.x only, for now, with Arduino IDE 2.0 support not yet available — using Spencer Konde's megaTinyCore or via the PlatformIO IDE.

Malyshenko is selling the board with or without pre-soldered pin headers on the Sonocotta Tindie store at $6 and $8 respectively; more information, sample source code, and a board schematic are available on the project's GitHub repository under an unspecified open-source license.