Now ULTIMA series has a new one. Please see the link.

Do you have "Programming PORT disappear problem?" Please see this and try to recover it

ALSO PLEASE REFER THIS INFORMATION if you encounter unusual board behaviour. You can recover!

PRECAUTION: Reverse LiPo battery connection is extremely dangerous. Please confirm polarity (Plus: RED, Minus: BLACK) of LiPo battery. LiPo battery is not included due to international parcel regulation, so please find it at your local reseller. I recommend always connection of LiPo with ULTIMA board even not of standalone use.

What is it?

I would like to proudly introduce one "ULTIMATE" board consists of Atmel SAMD21G18A, full compatible with Arduino Zero, full-color OLED and micro SD connector, and on-board LiPo battery charger circuit!

Why did you make it?

When I look back my thought of "SDuino making", I personally don't need full pin access but love "tiny board". All of my other Ultra series has full-pin access but now I would like to shrink down to small size. It is surely small size but still has 4-A/D input and 4-digital I/O and SPI and I2C pinout. In addition, LiPo charger circuit is added for standalone use.

What makes it special?

I2C and SPI pinout will enable various extension by sensing and data output by D/A or digital data extender. Full Color OLED will show you real time data change by colourful graph or just digit. You can store censored data into micro SD card, or stored data can be presented on colourful OLED display. LiPo charging function will provide "portable and standalone operation" without PC or additional battery. Sample code of primitive graphic draw program is uploaded to github. Possibility is infinite!!!!

As same as ULTRA series, ULTIMA programming is quite easy, just connecting to your computer, Arduino IDE will recognise as and selecting Arduino Zero with proper Port is all you will need to start!